THERMOPLASTIC POLYMER COMPOSITION AND STABILISER COMPOSITION

Abstract

The present invention provides a thermoplastic polymer composition containing a particular phenol compound or organic phosphorous compound, trehalose and a thermoplastic polymer, as well as a stabilizer composition containing a particular phenol compound or organic phosphorous compound and trehalose. A combined use of a particular phenol compound or organic phosphorous compound and trehalose can improve processing stability of a thermoplastic polymer composition.

Description

TECHNICAL FIELD

The present invention relates to a thermoplastic polymer composition and stabilizer composition.

BACKGROUND ART

Since thermoplastic polymers are superior in transparency and show good impact resistance, they are widely used for food packaging containers, convenience goods and the like. For the production of such products, thermoplastic polymers are used as compositions containing additives. As additives for thermoplastic polymers, 2,4-di-t-pentyl-6-[1-(3,5-di-t-pentyl-2-hydroxyphenyl)ethyl]phenyl acrylate, 6-[3-(3-t-butyl-4-hydroxy-5-methylphenyl)propoxy]-2,4,8,10-tetra-t-butyldibenzo[d,f][1,3,2]dioxaphosphepine (which is also called 6-t-butyl-4-[3-[(2,4,8,10-tetra-t-butyldibenzo[d,f][1,3,2]dioxaphosphepin-6-yl)oxy]propyl]-2-methylphenol), octadecyl 3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate, 3,9-bis[2-{3-(3-t-butyl-4-hydroxy-5-methylphenyl)propionyloxy}-1,1-dimethylethyl]-2,4,8,10-tetraoxaspiro[5.5]undecane, pentaerythritol tetrakis[3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate], tris(2,4-di-t-butylphenyl) phosphite and the like are known (patent documents 1-6).

DOCUMENT LIST

Patent Documents

• patent document 1: JP-A-1-168643
• patent document 2: JP-A-10-273494
• patent document 3: U.S. Pat. No. 3,330,859
• patent document 4: U.S. Pat. No. 3,644,482
• patent document 5: JP-A-59-25826
• patent document 6: JP-A-51-109050

SUMMARY OF THE INVENTION

Problems to be Solved by the Invention

There is a demand for a thermoplastic polymer composition showing further improved processing stability.

Means of Solving the Problems

The present inventors have conducted intensive studies in an attempt to solve the aforementioned problems and found that a thermoplastic polymer composition containing

the following compound represented by the formula (1),the following compound represented by the formula (2),at least one selected from the group consisting of thefollowing compounds represented by the formulas (3)-(7), orthe following compound represented by the formula (8),trehalose, anda thermoplastic polymershows superior processing stability. They have reached the following invention based on such findings.[1] A thermoplastic polymer composition comprising a compound represented by the formula (1):

wherein in the formula (1),

each R¹ and/or each R² are/is independently a C_1-8 alkyl group, a C_6-12 aryl group or a C_7-18 aralkyl group,

R³ is a hydrogen atom or a C_1-3 alkyl group, and

R⁴ is a hydrogen atom or a methyl group,

trehalose and a thermoplastic polymer.[2] The thermoplastic polymer composition of the above-mentioned [1], wherein the total amount of the compound represented by the formula (1) and trehalose is 0.001-3 parts by weight relative to 100 parts by weight of the thermoplastic polymer.[3] A stabilizer composition comprising a compound represented by the formula (1) and trehalose.[4] The stabilizer composition of the above-mentioned [3], wherein the compound represented by the formula (1) is at least one selected from the group consisting of 2,4-di-t-pentyl-6-[1-(3,5-di-t-pentyl-2-hydroxyphenyl)ethyl]phenyl acrylate and 2-t-butyl-6-(3-t-butyl-2-hydroxy-5-methylbenzyl)-4-methylphenyl acrylate.[5] The stabilizer composition of the above-mentioned [3] or [4], further comprising a compound represented by the formula (2):

wherein in the formula (2),

each R⁵ and/or each R⁶ are/is independently a hydrogen atom or a C_1-6 alkyl group,

L¹ is an n-valent C_1-24 alcohol residue optionally containing a hetero atom,

n is an integer of 1-4, and

the alcohol residue here is a residue obtained by removing a hydrogen atom from the hydroxy group of the alcohol.

[6] The stabilizer composition of any one of the above-mentioned [3]-[5], further comprising at least one selected from the group consisting of the compounds represented by the formulas (3)-(7):

wherein in the formula (3), each R⁷ and/or each R⁸ are/is independently a hydrogen atom, a C_1-9 alkyl group, a C_5-8 cycloalkyl group, a C_6-12 alkylcycloalkyl group, a C_7-12 aralkyl group or a phenyl group,

wherein in the formula (4), each R⁹ is independently a hydrogen atom, a C_1-9 alkyl group, a C_5-8 cycloalkyl group, a C_6-12 alkylcycloalkyl group, a C_7-12 aralkyl group or a phenyl group,

wherein in the formula (5), each R¹⁰ is independently a C_1-18 alkyl group or a phenyl group optionally substituted by at least one selected from the group consisting of a C_1-9 alkyl group, a C_5-8 cycloalkyl group, a C_6-12 alkylcycloalkyl group and a C_7-12 aralkyl group,

wherein in the formula (6),

each R¹¹ and/or each R¹² are/is independently a hydrogen atom, a C_1-9 alkyl group, a C_5-8 cycloalkyl group, a C_8-12 alkylcycloalkyl group, a C_7-12 aralkyl group or a phenyl group,

each L² is independently a single bond, a sulfur atom or a divalent group represented by the formula (6a):

wherein in the formula (6a), R¹³ and R¹⁴ are each independently a hydrogen atom or a C_1-7 alkyl group, and the total carbon number of R¹³ and R¹⁴ is not more than 7, and

each L³ is independently a C_2-8 alkylene group,

wherein in the formula (7),

each R¹⁵ and/or each R¹⁶ are/is independently a hydrogen atom, a C_1-9 alkyl group, a C_5-8 cycloalkyl group, a C_6-12 alkylcycloalkyl group, a C_7-12 aralkyl group or a phenyl group,

R¹⁷ is a C_1-8 alkyl group or a phenyl group optionally substituted by at least one selected from the group consisting of a C_1-9 alkyl group, a C_5-8 cycloalkyl group, a C_6-12 alkylcycloalkyl group and a C_7-12 aralkyl group, and

L⁴ is a single bond, a sulfur atom or a divalent group represented by the formula (7a):

wherein in the formula (7a), R¹⁸ and R¹⁹ are each independently a hydrogen atom or a C_1-7 alkyl group, and the total carbon number of R¹⁸ and R¹⁹ is not more than 7.[7] The stabilizer composition of the above-mentioned [6], wherein at least one selected from the group consisting of the compounds represented by the formulas (3)-(7) is the compound represented by the formula (3).[8] A production method of a thermoplastic polymer composition, comprising mixing the stabilizer composition of any one of the above-mentioned [3]-[7] and a thermoplastic polymer.[9] Use of the stabilizer composition of any one of the above-mentioned [3]-[7] for improving the processing stability of a thermoplastic polymer composition.[10] A thermoplastic polymer composition comprising a compound represented by the formula (8):

wherein in the formula (8),

each R²⁰ and/or each R²¹ are/is independently a hydrogen atom, a C_1-8 alkyl group, a C_5-8 cycloalkyl group, a C_6-12 alkylcycloalkyl group, a C_7-12 aralkyl group or a phenyl group,

R²³ and R²⁴ are each independently a hydrogen atom, a C_1-3 alkyl group, a C_5-8 cycloalkyl group, a C_6-12 alkylcycloalkyl group, a C_7-12 aralkyl group or a phenyl group,

each R²² is independently a hydrogen atom or a C_1-8 alkyl group,

L⁵ is a single bond, a sulfur atom or a divalent group represented by the formula (8a):

wherein in the formula (8a), R²⁵ is a hydrogen atom, a C_1-8 alkyl group or a C_5-8 cycloalkyl group,

L⁶ is a C_2-8 alkylene group or a divalent group represented by the formula (8b):

wherein in the formula (8b), L⁷ is a single bond or a C_1-8 alkylene group, and * shows bonding to the oxygen atom side, and

one of Z¹ and Z² is a hydroxy group, a C_1-8 alkyl group, a C_1-8 alkoxy group or a C_7-12 aralkyloxy group, and the other is a hydrogen atom or a C_1-8 alkyl group,

trehalose and a thermoplastic polymer.[11] The thermoplastic polymer composition of the above-mentioned [10], wherein the total amount of the compound represented by the formula (8) and trehalose is 0.001-3 parts by weight relative to 100 parts by weight of the thermoplastic polymer.[12] A stabilizer composition comprising a compound represented by the formula (8) and trehalose.[13] The stabilizer composition of the above-mentioned [12], wherein the compound represented by the formula (8) is 6-[3-(3-t-butyl-4-hydroxy-5-methylphenyl)propoxy]-2,4,8,10-tetra-t-butyldibenzo[d,f][1,3,2]dioxaphosphepine.[14] The stabilizer composition of the above-mentioned [12] or [13], further comprising a compound represented by the formula (2).[15] The stabilizer composition of any one of the above-mentioned [12]-[14], further comprising at least one selected from the group consisting of the compounds represented by the formulas (3)-(7).[16] The stabilizer composition of the above-mentioned [15], wherein at least one selected from the group consisting of the compounds represented by the formulas (3)-(7) is the compound represented by the formula (3).[17] A production method of a thermoplastic polymer composition, comprising mixing the stabilizer composition of any one of the above-mentioned [12]-[16] and a thermoplastic polymer.[18] Use of the stabilizer composition of any one of the above-mentioned [12]-[16] for improving the processing stability of a thermoplastic polymer composition.[19] A thermoplastic polymer composition comprising a compound represented by the formula (2), trehalose and a thermoplastic polymer.[20] The thermoplastic polymer composition of the above-mentioned[19], wherein the total amount of the compound represented by the formula (2) and trehalose is 0.001-3 parts by weight relative to 100 parts by weight of the thermoplastic polymer.[21] The thermoplastic polymer composition of the above-mentioned [19] or [20], wherein the thermoplastic polymer is a styrene-butadiene block copolymer.[22] A stabilizer composition comprising a compound represented by the formula (2) and trehalose.[23] A stabilizer composition consisting of a compound represented by the formula (2) and trehalose.[24] The stabilizer composition of the above-mentioned [22] or [23], wherein the compound represented by the formula (2) is at least one selected from the group consisting of octadecyl 3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate, 3,9-bis[2-{3-(3-t-butyl-4-hydroxy-5-methylphenyl)propionyloxy}-1,1-dimethylethyl]-2,4,8,10-tetraoxaspiro[5.5]undecane and pentaerythritol tetrakis[3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate].[25] A production method of a thermoplastic polymer composition, comprising mixing the stabilizer composition of any one of the above-mentioned [22]-[24] and a thermoplastic polymer.[26] Use of the stabilizer composition of any one of the above-mentioned [22]-[24] for improving the processing stability of a thermoplastic polymer composition.[27] A thermoplastic polymer composition comprising trehalose, a thermoplastic polymer and at least one selected from the group consisting of the compounds represented by the formulas (3)-(7).[28] The thermoplastic polymer composition of the above-mentioned [27], wherein the total amount of trehalose and the compound selected from the group consisting of the compounds represented by the formulas (3)-(7) is 0.001-3 parts by weight relative to 100 parts by weight of the thermoplastic polymer.[29] The thermoplastic polymer composition of the above-mentioned [27] or [28], wherein the thermoplastic polymer is a styrene-butadiene block copolymer.[30] A stabilizer composition comprising trehalose and at least one selected from the group consisting of the compounds represented by the formulas (3)-(7).[31] A stabilizer composition consisting of trehalose and at least one selected from the group consisting of the compounds represented by the formulas (3)-(7).[32] The stabilizer composition of the above-mentioned [30] or [31], wherein at least one selected from the group consisting of the compounds represented by the formulas (3)-(7) is the compound represented by the formula (3).[33] The stabilizer composition of the above-mentioned [32], wherein the compound represented by the formula (3) is tris(2,4-di-t-butylphenyl) phosphite.[34] A production method of a thermoplastic polymer composition, comprising mixing the stabilizer composition of any one of the above-mentioned [30]-[33] and a thermoplastic polymer.[35] Use of the stabilizer composition of any one of the above-mentioned [30]-[33] for improving the processing stability of a thermoplastic polymer composition.

In the present invention, the “C_a-b” means that the carbon number is not less than a and not more than b. In the following, the “compound represented by the formula (1)” and the like are sometimes abbreviated as “compound (1)” and the like. Similarly, the “divalent group represented by the formula (6a)” and the like are sometimes abbreviated as “divalent group (6a)” and the like.

Effect of the Invention

By using compound (1), compound (2), at least one selected from the group consisting of compounds (3)-(7) or compound (8) in combination with trehalose, the processing stability of a thermoplastic polymer composition can be improved.

DESCRIPTION OF EMBODIMENTS

The present invention is explained successively in the following. In the following, the thermoplastic polymer composition of the present invention and the stabilizer composition of the present invention, which contain compound (1) and trehalose as essential components, are sometimes referred to as “the first thermoplastic polymer composition” and “the first stabilizer composition”, respectively.

In addition, the thermoplastic polymer composition of the present invention and the stabilizer composition of the present invention, which contain compound (8) and trehalose as essential components, are sometimes referred to as “the second thermoplastic polymer composition” and “the second stabilizer composition”, respectively.

Furthermore, the thermoplastic polymer composition of the present invention and the stabilizer composition of the present invention, which contain compound (2) and trehalose as essential components, are sometimes referred to as “the third thermoplastic polymer composition” and “the third stabilizer composition”, respectively.

Moreover, the thermoplastic polymer composition of the present invention and the stabilizer composition of the present invention, which contain trehalose and at least one selected from the group consisting of compounds (3)-(7) as essential components, are sometimes referred to as “the fourth thermoplastic polymer composition” and “the fourth stabilizer composition”, respectively.

The first thermoplastic polymer composition is explained now. The first thermoplastic polymer composition contains compound (1), trehalose and a thermoplastic polymer. Only one kind of compound (1) may be used or two or more kinds thereof may be used in combination. In the following, compound (1) is explained successively.

Each R¹ and/or each R² in the formula (1) are/is independently a C_1-8 alkyl group, a C_6-12 aryl group or a C_7-18 aralkyl group. While there are two R¹, they may be the same or different, and they are preferably the same. The same applies to R².

The C_1-8 alkyl group may be a chain or a cyclic group, preferably a chain (linear or branched chain), more preferably a branched chain. The C_1-8 alkyl group includes a linear C_1-8 alkyl group (e.g., a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group (to be also referred to as an amyl group) and the like), a branched chain C_3-8 alkyl group (e.g., an isopropyl group, an isobutyl group, a sec-butyl group, a t-butyl group, a t-pentyl group, a 2-ethylhexyl group and the like), and a cyclic C_3-8 alkyl group (i.e., a C_3-8 cycloalkyl group, for example, a cyclopentyl group, a cyclohexyl group and the like). Examples of the C_6-12 aryl group include a phenyl group, a 1-naphthyl group, a 2-naphthyl group and the like. Examples of the C_7-18 aralkyl group include a benzyl group, a 1-phenylethyl group, a 2-phenylethyl group and the like.

Preferably, each R¹ and/or each R² are/is independently a branched chain C_3-8 alkyl group, more preferably a C_4-8 alkyl group having a tertiary carbon atom, still more preferably a t-butyl group or a t-pentyl group, particularly preferably a t-pentyl group.

R³ in the formula (1) is a hydrogen atom or a C_1-3 alkyl group. The C_1-3 alkyl group may be a linear or branched chain. Examples of the C_1-3 alkyl group include a methyl group, an ethyl group, a propyl group and an isopropyl group. R³ is preferably a hydrogen atom or a methyl group.

R⁴ in the formula (1) is a hydrogen atom or a methyl group, preferably a hydrogen atom.

Examples of compound (1) include 2,4-di-t-butyl-6-[1-(3,5-di-t-butyl-2-hydroxyphenyl)ethyl]phenyl (meth)acrylate, 2-t-butyl-6-(3-t-butyl-2-hydroxy-5-methylbenzyl)-4-methylphenyl (meth)acrylate, 2,4-di-t-pentyl-6-[1-(3,5-di-t-pentyl-2-hydroxyphenyl)ethyl]phenyl (meth)acrylate, 2,4-di-t-butyl-6-(3,5-di-t-butyl-2-hydroxy-benzyl)phenyl (meth)acrylate, 2-t-butyl-6-(3-t-butyl-2-hydroxy-5-methylbenzyl)-4-ethylphenyl (meth)acrylate, 2-t-pentyl-6-(3-t-pentyl-2-hydroxy-5-methylbenzyl)-4-methylphenyl (meth)acrylate and the like. Here, the “(meth)acrylate” means “acrylate and methacrylate”.

Preferable compound (1) is 2,4-di-t-pentyl-6-[1-(3,5-di-t-pentyl-2-hydroxyphenyl)ethyl]phenyl acrylate (hereinafter sometimes to be abbreviated as “compound (1-1)”), and 2-t-butyl-6-(3-t-butyl-2-hydroxy-5-methylbenzyl)-4-methylphenyl acrylate (hereinafter sometimes to be abbreviated as “compound (1-2)”). Compound (1-1) is commercially available as Sumilizer (registered trade mark) GS(F) (manufactured by Sumitomo Chemical Company, Limited), and compound (1-2) is commercially available as Sumilizer (registered trade mark) GM (manufactured by Sumitomo Chemical Company, Limited).

As compound (1), a commercially available product can be used, or it can be produced according to a known method (for example, the method described in JP-A-1-168643 or JP-A-58-84835).

Trehalose may be an anhydride or a hydrate, or a mixture thereof. The trehalose is commercially available, and a commercially available product can be directly used.

Only one kind of thermoplastic polymers may be used or two or more kinds thereof may be used in combination. Examples of the thermoplastic polymer include polyethylene resin (high density polyethylene (HDPE), low density polyethylene (LDPE), linear low density polyethylene (LLDPE), ethylene-vinyl alcohol copolymer (EVOH), ethylene-ethyl acrylate copolymer (EEA), ethylene-vinyl acetate copolymer (EVA) and the like), polypropylene resin (crystalline propylene homopolymer, propylene-ethylene random copolymer, propylene-α-olefin random copolymer, propylene-ethylene-α-olefin copolymer, polypropylene block copolymer comprised of a block of propylene homopolymer or copolymer containing propylene as a main component and a block of copolymer of propylene and ethylene and/or other α-olefin, and the like), methylpentene polymer, polystyrene resin (polystyrenes such as polystyrene (PS), poly(p-methylstyrene), poly(α-methylstyrene) and the like, acrylonitrile-styrene copolymer (SAN), acrylonitrile-butadiene-styrene copolymer (ABS), special acrylic rubber-acrylonitrile-styrene copolymer, acrylonitrile-chlorinated polyethylene-styrene copolymer (ACS), styrene-ethylene-butylene-styrene block copolymer (SEBS), styrene-isoprene-styrene block copolymer (SIS) and the like), polybutadiene resin (polybutadiene; polybutadiene rubber (BR); styrene-butadiene copolymer (SB); styrene-butadiene block copolymer (SBS); impact resistance polystyrene (HI-PS) modified by polybutadiene, styrene-butadiene copolymer or SBS, styrene-butadiene thermoplastic elastomer and the like), chlorinated polyethylene (CPE), polychloroprene, chlorinated rubber, poly(vinyl chloride) thermoplastic elastomer, poly(vinyl chloride) (PVC), poly(vinylidene chloride) (PVDC), methacrylate resin, fluororesin, polyacetal (POM), grafted poly(phenylene ether) resin, poly(phenylene sulfide) resin (PPS), polyurethane (PU), polyamide (PA, also called as nylon (registered trade mark), for example, nylon 6 (Ny6), nylon 11 (Ny11), nylon 12 (Ny12), nylon 610 (Ny610), nylon 612 (Ny612), nylon MXD6 (NyMXD6)), polyester resin (e.g., poly(ethylene terephthalate) (PET), poly(butylene terephthalate) (PBT) and the like), poly(lactic acid) (PLA), polycarbonate (PC), polyacrylate, polysulfone (PPSU), poly(ether ether ketone) (PEEK), poly(ether sulfone) (PES), aromatic polyester, diallyl phthalate prepolymer, silicone resin (SI), 1,2-polybutadiene, polyisoprene, butadiene-acrylonitrile copolymer (NBR), ethylene-methyl methacrylate copolymer (EMMA) and the like.

Of these, due to good molding processability, polyethylene resin, polypropylene resin, polystyrene resin and polybutadiene resin are preferable, polyethylene resin and polybutadiene resin are more preferable, and styrene-butadiene block copolymer (SBS) is still more preferable.

While the weight average molecular weight (Mw) of the thermoplastic polymer to be used is not particularly limited, it is generally not less than 1000 and not more than 300,000. Mw can be measured by, for example, gel permeation chromatography (GPC) using polystyrene as a standard.

The total amount of compound (1) and trehalose in the first thermoplastic polymer composition is preferably 0.001-3 parts by weight, more preferably 0.02-2 parts by weight, still more preferably 0.02-1 part by weight, relative to 100 parts by weight of the thermoplastic polymer.

The weight ratio of compound (1) and trehalose in the first thermoplastic polymer composition (i.e., compound (1):trehalose) is preferably 1000:1-0.05:1. Compound (1):trehalose is more preferably 1000:1-0.1:1 from the aspect of processing stability of the thermoplastic polymer composition, and still more preferably 1000:1-0.5:1, particularly preferably 1000:1-1:1, from the aspect of suppression of color change of the thermoplastic polymer composition.

The first thermoplastic polymer composition may further contain compound (2). Only one kind of compound (2) may be used or two or more kinds thereof may be used in combination. In the following, compound (2) is explained successively.

Each R⁵ and/or each R⁶ in the formula (2) are/is independently a hydrogen atom or a C_1-6 alkyl group. When n is two or more, R⁵ may be the same as or different from each other, and they are preferably the same. The same applies to R⁶. The C_1-6 alkyl group may be a chain or a cyclic group, and the chain to may be a linear or branched chain. The C_1-6 alkyl group includes a linear C_1-6 alkyl group (a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, a hexyl group), a branched chain C_3-6 alkyl group (e.g., an isopropyl group, an isobutyl group, a t-butyl group, an isopentyl group, a t-pentyl group, a t-hexyl group), and a cyclic C_3-6 alkyl group (i.e., a C_3-6 cycloalkyl group, for example, a cyclopentyl group, a cyclohexyl group). Preferably, each R⁵ and/or each R⁶ are/is independently a linear C_1-6 alkyl group or branched chain C_3-6 alkyl group, more preferably a methyl group or a t-butyl group. Still more preferably, each R⁵ and each R⁶ are t-butyl groups.

L¹ in the formula (2) is an n-valent C_1-24 alcohol residue optionally containing a hetero atom, and n is an integer of 1-4. Examples of the hetero atom include an oxygen atom, a sulfur atom, a nitrogen atom and the like. These hetero atoms may be replaced with the carbon atom of the n-valent C_1-24 alcohol residue. That is, the n-valent C_1-24 alcohol residue may have —O—, —S—, —NR— wherein R is a hydrogen atom or other substituent (for example, a C_1-6 alkyl group)) and the like. As the hetero atom, an oxygen atom is preferable.

The n-valent C_1-24 alcohol residue (n=1-4) may be a chain or a cyclic residue, or a combination of these. The chain may be a linear or branched chain.

Examples of the monovalent C_1-24 alcohol residue include the residues of methanol, ethanol, propanol, isopropanol, butanol, t-butanol, hexanol, octanol, decanol, dodecanol, tetradecanol, hexadecanol, octadecanol and the like.

Examples of the divalent C_1-24 alcohol residue include the residues of ethylene glycol, 1,2-propanediol, 1,3-propanediol, 1,4-butanediol, 1,5-pentanediol, 1,6-hexanediol, 1,8-octanediol, 1,10-decanediol, 1,12-dodecanediol, 1,14-tetradecanediol, 1,16-hexadecanediol, diethylene glycol, triethylene glycol, 3,9-bis(1,1-dimethyl-2-hydroxyethyl)-2,4,8,10-tetraoxaspiro[5.5]undecane and the like.

Examples of the trivalent C_1-24 alcohol residue include the residues of glycerol and the like.

Examples of the tetravalent C_1-24 alcohol residue include the residues of erythritol, pentaerythritol and the like.

Examples of compound (2) include ester of 3-(3,5-di-t-butyl-4-hydroxyphenyl)propionic acid, 3-(3-t-butyl-4-hydroxy-5-methylphenyl)propionic acid or 3-(3,5-dicyclohexyl-4-hydroxyphenyl)propionic acid and a monovalent or polyvalent alcohol. Examples of the aforementioned monovalent or polyvalent alcohol include methanol, ethanol, octanol, octadecanol, ethylene glycol, 1,3-propanediol, 1,4-butanediol, 1,6-hexanediol, 1,9-nonanediol, neopentylglycol, diethylene glycol, thioethylene glycol, triethylene glycol, pentaerythritol, tris(hydroxyethyl)isocyanurate, N,N′-bis(hydroxyethyl)oxamide, 3-thiaundecanol, 3-thiapentadecanol, trimethylhexanediol, trimethylolpropane, 4-hydroxymethyl-1-phospha-2,6,7-trioxabicyclo[2,2,2]octane, 3,9-bis(1,1-dimethyl-2-hydroxyethyl)-2,4,8,10-tetraoxaspiro[5.5]undecane, a mixture thereof and the like.

Preferable compound (2) is octadecyl 3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate (hereinafter sometimes to be abbreviated as “compound (2⁻¹)”), 9-bis[2-{3-(3-t-butyl-4-hydroxy-5-methylphenyl)propionyloxy}-1,1-dimethylethyl]-2,4,8,10-tetraoxaspiro[5.5]undecane (hereinafter sometimes to be abbreviated as “compound (2-2)”) and pentaerythritol tetrakis[3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate] (hereinafter sometimes to be abbreviated as “compound (2-3)”). Compound (2-1) is commercially available as “Irganox (registered trade mark) 1076” (manufactured by BASF), compound (2-2) is commercially available as “Sumilizer (registered trade mark) GA-80” (manufactured by Sumitomo Chemical Company, Limited), and compound (2-3) is commercially available as “Irganox (registered trade mark) 1010” (manufactured by BASF).

As compound (2), a commercially available product can be used, or it can be produced according to a known method (for example, the method described in U.S. Pat. No. 3,330,859, U.S. Pat. No. 3,644,482 or JP-A-59-25826).

When the first thermoplastic polymer composition contains compound (2), the content of compound (2) is preferably 0.001-3 parts by weight, more preferably 0.02-2 parts by weight, relative to 100 parts of weight of the first thermoplastic polymer composition.

The first thermoplastic polymer composition may further contain at least one selected from the group consisting of compounds (3)-(7). Only one kind of compounds (3)-(7) may be used or two or more kinds thereof may be used in combination. In the following, compounds (3)-(7) are explained successively.

Each R⁷ and/or each R⁸ in the formula (3) are/is independently a hydrogen atom, a C_1-9 alkyl group, a C_5-8 cycloalkyl group, a C_6-12 alkylcycloalkyl group, a C_7-12 aralkyl group or a phenyl group. While there are three R⁷, they may be the same as or different from each other, and they are preferably the same. The same applies to R⁸. The positions of R⁷ and R⁸ are preferably the 2-position and the 4-position.

The C_1-9 alkyl group may be a linear or branched chain. The carbon number of the C_1-9 alkyl group is preferably not less than 3 and not more than 5. Examples of the C_1-9 alkyl group include a methyl group, an ethyl group, a propyl group, an isopropyl group, a butyl group, an isobutyl group, a sec-butyl group, a t-butyl group, a pentyl group, a t-pentyl group, a 2-ethylhexyl group, a nonyl group and the like.

The C_5-8 cycloalkyl group includes a cyclopentyl group, a cyclohexyl group, a cycloheptyl group and a cyclooctyl group.

Examples of the C_6-12 alkylcycloalkyl group include a 1-methylcyclopentyl group, a 2-methylcyclopentyl group, a 1-methylcyclohexyl group, a 2-methylcyclohexyl group, a 1-methyl-4-isopropylcyclohexyl group and the like.

Examples of the C_7-12 aralkyl group include a benzyl group, an α-methylbenzyl group (also to be referred to as a 1-phenylethyl group), an α,α-dimethylbenzyl group (also to be referred to as a 1-methyl-1-phenylethyl group or a cumyl group) and the like.

Preferably, each R⁷ and/or each R⁸ are/is independently a hydrogen atom or a C_1-9 alkyl group, more preferably a hydrogen atom, a t-butyl group or a nonyl group, still more preferably a t-butyl group.

Examples of compound (3) include tris(2,4-di-t-butylphenyl) phosphite (hereinafter sometimes to be abbreviated as “compound (3-1)”), triphenyl phosphite, tris(4-nonylphenyl) phosphite, tris(2,4-dinonylphenyl) phosphite and the like. Of these, compound (3-1) is preferable. Compound (3-1) is commercially available as “Irgafos (registered trade mark) 168” (manufactured by BASF).

Each R⁹ in the formula (4) is independently a hydrogen atom, a C_1-9 alkyl group, a C_5-8 cycloalkyl group, a C_6-12 alkylcycloalkyl group, a C_7-12 aralkyl group or a phenyl group.

While there are four R⁹, they may be the same as or different from each other, and they are preferably the same. Examples of the C_1-9 alkyl group, C_5-8 cycloalkyl group, C_6-12 alkylcycloalkyl group and C_7-12 aralkyl group for R⁹ include those mentioned above. Each R⁹ is preferably independently a hydrogen atom or a C_1-9 alkyl group, more preferably a hydrogen atom.

Examples of compound (4) include tetrakis(2,4-di-t-butylphenyl)-4,4-biphenylene diphoshonite (hereinafter sometimes to be abbreviated as “compound (4-1)”), tetrakis(2,4-di-t-butyl-5-methylphenyl)-4,4-biphenylene diphoshonite (hereinafter sometimes to be abbreviated as “compound (4-2)”) and the like. Of these, compound (4-1) is preferable. Compound (4-1) is commercially available as “Sandostab (registered trade mark) P-EPQ” (manufactured by Clariant), and compound (4-2) is commercially available as “Yoshinox (registered trade mark) GSY-P101” (manufactured by API).

Each R¹⁰ in the formula (5) is independently a C_1-18 alkyl group or a phenyl group. The phenyl group for R¹⁰ may have, as a substituent, at least one selected from the group consisting of a C_1-9 alkyl group, a C_5-8 cycloalkyl group, a C_6-12 alkylcycloalkyl group and a C_7-12 aralkyl group. Examples of these substituents for phenyl group include those mentioned above. In addition, while there are two R¹⁰, they may be the same as or different from each other, and they are preferably the same.

The C_1-18 alkyl group may be a linear or branched chain. The carbon number of the C_1-18 alkyl group is preferably not less than 12 and not more than 18. Examples of the C_1-18 alkyl group include a methyl group, an ethyl group, a propyl group, an isopropyl group, a butyl group, an isobutyl group, a t-butyl group, a hexyl group, an octyl group, a decyl group, a dodecyl group, a tetradecyl group, a hexadecyl group, an octadecyl group and the like.

Examples of the phenyl group substituted by a C_1-9 alkyl group include a 2-methylphenyl group, a 4-methylphenyl group, a 2-t-butylphenyl group, a 4-t-butylphenyl group, a 2-nonylphenyl group, a 4-nonylphenyl group, a 2,4-di-t-butylphenyl group, a 2,4-di-nonylphenyl group, a 2,6-di-t-butylphenyl group, a 2-t-butyl-4-methylphenyl group, a 2-t-butyl-4-ethylphenyl group, a 2,5-di-t-butylphenyl group, a 2,6-di-t-butyl-4-methylphenyl group and the like.

Examples of the phenyl group substituted by a C_5-8 cycloalkyl group include a 2-cyclopentylphenyl group, a 2-cyclohexylphenyl group, a 4-cyclohexylphenyl group, a 2,4-dicyclohexylphenyl group and the like.

Examples of the phenyl group substituted by a C_6-12 alkylcycloalkyl group include a 2-(2-methylcyclohexyl)phenyl group, a 4-(2-methylcyclohexyl)phenyl group, a 2,4-di-(2-methylcyclohexyl)phenyl group and the like.

Examples of the phenyl group substituted by a C_7-12 aralkyl group include a 2-benzylphenyl group, a 2-cumylphenyl group, a 4-cumylphenyl group, a 2,4-dicumylphenyl group and the like.

Examples of the phenyl group substituted by a C_1-9 alkyl group and a C_5-8 cycloalkyl group include a 2-methyl-4-cyclohexylphenyl group and the like. Examples of the phenyl group substituted by a C_1-9 alkyl group and a C_6-12 alkylcycloalkyl group include a 2-methyl-4-(2-methylcyclohexyl)phenyl group and the like. Examples of the phenyl group substituted by a C_1-9 alkyl group and a C_7-12 aralkyl group include a 2-benzyl-4-methylphenyl group and the like.

Each R¹⁰ is preferably independently an octadecyl group (also to be referred to as a stearyl group), a 2,6-di-t-butyl-4-methylphenyl group, a 2,4-di-t-butylphenyl group or a 2,4-dicumylphenyl group.

Examples of compound (5) include bis(2,6-di-t-butyl-4-methylphenyl)pentaerythritol diphosphite (hereinafter sometimes to be abbreviated as “compound (5-1)”), bis(2,4-di-t-butylphenyl) pentaerythritol diphosphite (hereinafter sometimes to be abbreviated as “compound (5-2)”), bis(2,4-dicumylphenyl)pentaerythritol diphosphite (hereinafter sometimes to be abbreviated as “compound (5-3)”), distearylpentaerythritol diphosphite (hereinafter sometimes to be abbreviated as “compound (5-4)”), diisodecylpentaerythritol diphosphite, bis(2,4-di-t-butylphenyl)pentaerythritol diphosphite, bis(2,4-di-t-butyl-6-methylphenyl)pentaerythritol diphosphite, bis(2,4,6-tri-t-butylphenyl)pentaerythritol diphosphite and the like. Of these, compound (5-1), compound (5-2) and compound (5-3) are preferable. Compound (5-1) is commercially available as “Adekastab (registered trade mark) PEP-36” (manufactured by ADEKA), compound (5-2) is commercially available as “Ultranox (registered trade mark) 626” (manufactured by GE Plastics), compound (5-3) is commercially available as “Doverphos S9228T” (manufactured by Dover Chemical Corporation), and compound (5-4) is commercially available as “Adekastab (registered trade mark) PEP-8” (manufactured by ADEKA).

Each R¹¹ and/or each R¹² in the formula (6) are/is independently a hydrogen atom, a C_1-9 alkyl group, a C_5-8 cycloalkyl group, a C_6-12 alkylcycloalkyl group, a C_7-12 aralkyl group or a phenyl group. Examples of the C_1-9 alkyl group, C_5-8 cycloalkyl group, C_6-12 alkylcycloalkyl group and C_7-12 aralkyl group for R¹¹ or R¹² include those mentioned above. While there are six R¹¹, they may be the same as or different from each other, and they are preferably the same. The same applies to R¹². The positions of R¹¹ and R¹² are preferably the 3-position and the 5-position, when the position of the carbon atom on the benzene ring to which L² is bonded is the 1-position. Preferably, each R¹¹ and/or each R¹² are/is independently a C_1-9 alkyl group, more preferably a t-butyl group.

Each L² in the formula (6) is independently a single bond, a sulfur atom or a divalent group represented by the formula (6a). The total carbon number of R¹³ and R¹⁴ in the formula (6a) is not more than 7, and R¹³ and R¹⁴ are each independently a hydrogen atom or a alkyl group. While there are three L², they may be the same as or different from each other, and they are preferably the same.

The alkyl group may be a linear or branched chain. The carbon number of the alkyl group is preferably not less than 1 and not more than 3. The total carbon number of R¹³ and R¹⁴ is preferably not more than 3. Examples of the C_1-7 alkyl group include a methyl group, an ethyl group, a propyl group, an isopropyl group, a butyl group, an isobutyl group, a sec-butyl group, a t-butyl group, a pentyl group, an isopentyl group, a neopentyl group, a t-pentyl group, a hexyl group, a heptyl group and the like.

Examples of the divalent group (6a) include —CH₂—, —CH(CH₃)—, —CH(C₂H₅)—, —C(CH₃)₂—, —CH(n-C₃H₇)— and the like.

Each L² is preferably —CH₂— or a single bond, more preferably a single bond.

Each L³ in the formula (6) is independently a C_2-8 alkylene group. While there are three L³, they may be the same as or different from each other, and they are preferably the same.

Examples of the C_2-8 alkylene group include an ethylene group, a propylene group (—CH(CH₃)CH₂—, —CH₂CH(CH₃)—), a trimethylene group, a tetramethylene group, a pentamethylene group, a hexamethylene group, an octamethylene group, a 2,2-dimethyl-1,3-propylene group and the like.

Each L³ is preferably independently an ethylene group or a trimethylene group, more preferably an ethylene group.

As compound (6), 6,6′,6″-[nitrilotris(ethyleneoxy)]tris(2,4,8,10-tetra-t-butyldibenzo[d,f][1,3,2]dioxaphosphepine) (hereinafter sometimes to be abbreviated as “compound (6-1)”) is preferable. Compound (6-1) is commercially available as “Irgafos (registered trade mark) 12” (manufactured by BASF).

Each R¹⁵ and/or each R¹⁶ in the formula (7) are/is independently a hydrogen atom, a C_1-8 alkyl group, a C_5-8 cycloalkyl group, a C_6-12 alkylcycloalkyl group, a C_7-12 aralkyl group or a phenyl group. Examples of the alkyl group, C_5-8 cycloalkyl group, C_6-12 alkylcycloalkyl group and C_7-12 aralkyl group for R¹⁵ or R¹⁶ include those mentioned above. While there are two R¹⁵, they may be the same as or different from each other, and they are preferably the same. The same applies to R¹⁶. The positions of R¹⁵ and R¹⁶ are preferably the 3-position and the 5-position, when the position of the carbon atom on the benzene ring to which L⁴ is bonded is the 1-position. That is, when the position of the carbon atom on the benzene ring to which Ois bonded is the 1-position, respectively, the 2-position and the 4-position are preferable. Preferably, each R¹⁵ and/or each R¹⁶ are/is independently a C_1-9 alkyl group, more preferably a t-butyl group.

R¹⁷ in the formula (7) is a C_1-9 alkyl group or a phenyl group. The phenyl group for R¹⁷ may have, as a substituent, at least one selected from the group consisting of a C_1-9 alkyl group, a C_5-9 cycloalkyl group, a C_6-12 alkylcycloalkyl group and a C_7-12 aralkyl group. Examples of the C_1-8 alkyl group and the phenyl group having a substituent for R¹⁷ include those mentioned above. The carbon number of the C_1-8 alkyl group for R¹⁷ is preferably not less than 4 and not more than 8. R¹⁷ is preferably a C_1-8 alkyl group, more preferably an octyl group.

L⁴ in the formula (7) is a single bond, a sulfur atom or a divalent group represented by the formula (7a). The total carbon number of R¹⁸ and R¹⁹ in the formula (7a) is not more than 7, and R¹⁸ and R¹⁹ are each independently a hydrogen atom or a C_1-7 alkyl group. Examples of the C_1-7 alkyl group for R¹⁸ or R¹⁹ include those mentioned above. The total carbon number for R¹⁸ or R¹⁹ is preferably not more than 3. Specific examples of the divalent group (7a) include those recited for the divalent group (6a). L⁴ is preferably —CH₂— or a single bond, more preferably —CH₂—.

Examples of compound (7) include 2,2-methylenebis(4,6-di-t-butylphenyl) octyl phosphite (hereinafter sometimes to be abbreviated as “compound (7-1)”) and 2,2′-methylenebis(4,6-di-t-butylphenyl) 2-ethylhexyl phosphite. Of these, compound (7-1) is preferable. Compound (7-1) is commercially available as “Adekastab (registered trade mark) HP-10” (manufactured by ADEKA).

Among compounds (3)-(7), compound (3) is preferable, and compound (3-1) is more preferable.

When the first thermoplastic polymer composition contains at least one selected from the group consisting of compounds (3)-(7), the total amount of the compounds selected from the group consisting of compounds (3)-(7) is preferably 0.001-3 parts by weight, more preferably 0.02-2 parts by weight, relative to 100 parts of weight of the first thermoplastic polymer composition.

Next, the second thermoplastic polymer composition is explained. The second thermoplastic polymer composition contains compound (8), trehalose and a thermoplastic polymer. Only one kind of compound (8) may be used or two or more kinds thereof may be used in combination. Explanations of trehalose and the thermoplastic polymer in the second thermoplastic polymer composition are the same as those mentioned above. In the following, compound (8) is explained successively.

Each R²⁰ and/or each R²¹ in the formula (8) are/is independently a hydrogen atom, a C_1-8 alkyl group, a C_5-8 cycloalkyl group, a C_6-12 alkylcycloalkyl group, a C_7-12 aralkyl group or a phenyl group. R²³ and R²⁴ in the formula (8) are each independently a hydrogen atom, a C_1-8 alkyl group, a C_5-8 cycloalkyl group, a C_6-12 alkylcycloalkyl group, a C_7-12 aralkyl group or a phenyl group. While there are two R²⁰, they may be the same as or different from each other, and they are preferably the same. The same applies to R²¹.

The C_1-8 alkyl group may be a linear or branched chain. The carbon number of the C_1-8 alkyl group is preferably not less than 1 and not more than 5. Examples of the C_1-8 alkyl group include a methyl group, an ethyl group, a propyl group, an isopropyl group, a butyl group, an isobutyl group, a sec-butyl group, a t-butyl group, a t-pentyl group, an isooctyl group (also to be referred to as a 6-methylheptyl group), a t-octyl group (also to be referred to as a 1,1,3,3-tetramethylbutyl group), a 2-ethylhexyl group and the like.

The C_5-8 cycloalkyl group includes a cyclopentyl group, a cyclohexyl group, a cycloheptyl group and a cyclooctyl group.

Examples of the C_6-12 alkylcycloalkyl group include a 1-methylcyclopentyl group, a 2-methylcyclopentyl group, a 1-methylcyclohexyl group, a 2-methylcyclohexyl group, a 1-methyl-4-isopropylcyclohexyl group and the like.

Examples of the C_7-12 aralkyl group include a benzyl group, α-methylbenzyl group (also to be referred to as a 1-phenylethyl group), an α,α-dimethylbenzyl group (also to be referred to as a 1-methyl-1-phenylethyl group or a cumyl group) and the like.

Preferably, each R²⁰ and/or R²³ are/is independently a C_1-8 alkyl group (more preferably a C_4-8 alkyl group having a tertiary carbon atom), a C_5-6 cycloalkyl group (more preferably a cyclohexyl group) or a C_6-12 alkylcycloalkyl group (more preferably a 1-methylcyclohexyl group). As the C_4-8 alkyl group having a tertiary carbon atom, a t-butyl group, a t-pentyl group and a t-octyl group are still more preferable.

Each R²¹ is preferably independently a C_1-8 alkyl group, a C_5-8 cycloalkyl group or a C_6-12 alkylcycloalkyl group, more preferably a C_1-5 alkyl group. The C_1-5 alkyl group may be a linear or branched chain. Examples of the C_1-5 alkyl group include a methyl group, an ethyl group, a propyl group, an isopropyl group, a butyl group, an isobutyl group, a sec-butyl group, a t-butyl group, a t-pentyl group and the like. More preferably, each R²¹ is independently a methyl group, a t-butyl group or a t-pentyl group.

R²⁴ is preferably a hydrogen atom or a C_1-5 alkyl group, more preferably a hydrogen atom or a methyl group. Examples of the C_1-5 alkyl group for R²⁴ include those mentioned above.

Each R²² in the formula (8) is independently a hydrogen atom or a C_1-8 alkyl group. While there are two R²², they may be the same as or different from each other, and they are preferably the same. Each R²² is preferably a hydrogen atom or a C_1-5 alkyl group, more preferably a methyl group or a hydrogen atom. Examples of the C_1-8 alkyl group and C_1-5 alkyl group for R²² include those mentioned above.

L⁵ in the formula (8) is a single bond, a sulfur atom or a divalent group represented by the formula (8a). R²⁵ in the formula (8a) is a hydrogen atom, a C_1-8 alkyl group or a C_5-8 cycloalkyl group. R²⁵ is preferably a hydrogen atom or a C_1-5 alkyl group. Examples of the C_1-8 alkyl group, C_1-5 alkyl group and C_5-8 cycloalkyl group for R²⁵ include those mentioned above. L⁵ is preferably a single bond or the divalent group (8a), more preferably a single bond.

L⁶ in the formula (8) is a C_2-8 alkylene group or a divalent group represented by the formula (8b). L⁷ in the formula (8b) is a single bond or a C_1-8 alkylene group. The C_2-8 alkylene group and C_1-8 alkylene group may be each a linear or branched chain. Examples of the C_2-8 alkylene group include an ethylene group, a propylene group (—CH(CH₃)CH₂—, —CH₂CH(CH₃)—), a trimethylene group, a tetramethylene group, a pentamethylene group, a hexamethylene group, an octamethylene group, a 2,2-dimethyl-1,3-propylene group and the like. Examples of the C_1-8 alkylene group include a methylene group, the aforementioned C_2-8 alkylene group and the like.

L⁶ is preferably a C_2-8 alkylene group, the divalent group (8b) wherein L⁷ is a single bond (i.e., a carbonyl group), or the divalent group (8b) wherein L⁷ is an ethylene group; more preferably a C_2-8 alkylene group; and still more preferably a trimethylene group.

One of Z¹ and Z² in the formula (8) is a hydroxy group, a C_1-8 alkyl group, a C_1-8 alkoxy group or a C_7-12 aralkyloxy group, and the other is a hydrogen atom or a C_1-8 alkyl group. Examples of the C_1-8 alkyl group for Z¹ and Z² include those mentioned above.

The C_1-8 alkoxy group may be a linear or branched chain. Examples of the C_1-8 alkoxy group include a methoxy group, an ethoxy group, a propoxy group, an isopropoxy group, a butoxy group, an isobutoxy group, a sec-butoxy group, a t-butoxy group, a t-pentyloxy group, an isooctyloxy group (also to be referred to as a 6-methylheptyloxy group), a t-octyloxy group (also to be referred to as a 1,1,3,3-tetramethylbutyloxy group), a 2-ethylhexyloxy group and the like.

Examples of the C_7-12 aralkyloxy group include a benzyloxy group, an α-methylbenzyloxy group, an α,α-dimethylbenzyloxy group and the like.

Preferably, one of Z¹ and Z² is a hydroxy group, and the other is a hydrogen atom.

A preferable combination of the substituents is a combination wherein each R²⁰ and/or R²³ are/is independently a C_4-8 alkyl group having a tertiary carbon atom, cyclohexyl or a 1-methylcyclohexyl group, each R²¹ is independently a C_1-5 alkyl group, each R²² is independently a hydrogen atom or a C_1-5 alkyl group, R²⁴ is a hydrogen atom or a C_1-5 alkyl group, L⁵ is a single bond, L⁶ is a C_2-8 alkylene group, and one of Z¹ and Z² is a hydroxy group and the other is a hydrogen atom. In this preferable combination, each R²⁰ is more preferably the same. The same applies to each R²¹ and each R²². In addition, in this preferable combination, each R²⁰, each R²² and R²³ are all still more preferably t-butyl groups or t-pentyl groups (particularly t-butyl groups).

Examples of compound (8) include 6-[3-(3-t-butyl-4-hydroxy-5-methylphenyl)propoxy]-2,4,8,10-tetra-t-butyldibenzo[d,f][1,3,2]dioxaphosphepine, 2,10-dimethyl-4,8-di-t-butyl-6-[3-(3,5-di-t-butyl-4-hydroxyphenyl)propoxy]-12H-dibenzo[d,g][1,3,2]dioxaphosphocin, 2,4,8,10-tetra-t-butyl-6-[3-(3,5-di-t-butyl-4-hydroxyphenyl)propoxy]dibenzo[d,f][1,3,2]dioxaphosphepine, 2,4,8,10-tetra-t-pentyl-6-[3-(3,5-di-t-butyl-4-hydroxyphenyl)propoxy]-12-methyl-12H-dibenzo[d,g][1,3,2]dioxaphosphocin, 2,10-dimethyl-4,8-di-t-butyl-6-[3-(3,5-di-t-butyl-4-hydroxyphenyl)propionyloxy]-12H-dibenzo[d,g][1,3,2]dioxaphosphocin, 2,4,8,10-tetra-t-pentyl-6-[3-(3,5-di-t-butyl-4-hydroxyphenyl)propionyloxy]-12-methyl-12H-dibenzo[d,g][1,3,2]dioxaphosphocin, 2,4,8,10-tetra-t-butyl-6-[3-(3,5-di-t-butyl-4-hydroxyphenyl)propionyloxy]-dibenzo[d,f][1,3,2]dioxaphosphepine, 2,10-dimethyl-4,8-di-t-butyl-6-(3,5-di-t-butyl-4-hydroxybenzoyloxy)-12H-dibenzo[d,g][1,3,2]dioxaphosphocin, 2,4,6,10-tetra-t-butyl-6-(3,5-di-t-butyl-4-hydroxybenzoyloxy)-12-methyl-12H-dibenzo[d,g][1,3,2]dioxaphosphocin, 2,10-dimethyl-4,8-di-t-butyl-6-[3-(3-methyl-4-hydroxy-5-t-butylphenyl)propoxy]-12H-dibenzo[d,g][1,3,2]dioxaphosphocin, 2,4,8,10-tetra-t-butyl-6-[3-(3,5-di-t-butyl-4-hydroxyphenyl)propoxy]-12H-dibenzo[d,g][1,3,2]dioxaphosphocin, 2,10-diethyl-4,8-di-t-butyl-6-[3-(3,5-di-t-butyl-4-hydroxyphenyl)propoxy]-12H-dibenzo[d,g][1,3,2]dioxaphosphocin, 2,4,8,10-tetra-t-butyl-6-[2,2-dimethyl-3-(3-t-butyl-4-hydroxy-5-methylphenyl)propoxy]-dibenzo[d,f][1,3,2]dioxaphosphepine and the like.

Of compound (8), 6-[3-(3-t-butyl-4-hydroxy-5-methylphenyl)propoxy]-2,4,8,10-tetra-t-butyldibenzo[d,f][1,3,2]dioxaphosphepine (hereinafter sometimes to be abbreviated as “compound (8-1)”) is preferable. Compound (8-1) is commercially available as “Sumilizer (registered trade mark) GP” (manufactured by Sumitomo Chemical Company, Limited).

As compound (8), a commercially available product can be used, or it can be produced according to a known method (for example, the method described in JP-A-10-273494).

The total amount of compound (8) and trehalose in the second thermoplastic polymer composition is preferably 0.001-3 parts by weight, more preferably 0.02-2 parts by weight, still more preferably 0.02-1 part by weight, relative to 100 parts by weight of the thermoplastic polymer.

The weight ratio of compound (8) and trehalose in the second thermoplastic polymer composition (i.e., compound (8):trehalose) is preferably 1000:1-0.05:1. Compound (8):trehalose is more preferably 1000:1-0.1:1 from the aspect of processing stability of a thermoplastic polymer composition, and still more preferably 1000:1-0.5:1, particularly preferably 1000:1-1:1, from the aspect of suppression of color change of a thermoplastic polymer composition.

The second thermoplastic polymer composition may further contain compound (2). Only one kind of compound (2) may be used or two or more kinds thereof may be used in combination. Explanations of compound (2) are the same as those mentioned above.

When the second thermoplastic polymer composition contains compound (2), the content of compound (2) is preferably 0.001-3 parts by weight, more preferably 0.02-2 parts by weight, relative to 100 parts by weight of the second thermoplastic polymer composition.

The second thermoplastic polymer composition may further contain at least one selected from the group consisting of compounds (3)-(7). Only one kind of compounds (3)-(7) may be used or two or more kinds thereof may be used in combination. Explanations of compounds (3)-(7) are the same as those mentioned above.

When the second thermoplastic polymer composition contains at least one selected from the group consisting of compounds (3)-(7), the total amount of the compounds selected from the group consisting of compounds (3)-(7) is preferably 0.001-3 parts by weight, more preferably 0.02-2 parts by weight, relative to 100 parts by weight of the second thermoplastic polymer composition.

Next, the third thermoplastic polymer composition is explained. The third thermoplastic polymer composition contains compound (2), trehalose and a thermoplastic polymer. Only one kind of compound (2) may be used or two or more kinds thereof may be used in combination. Explanations of compound (2), trehalose and the thermoplastic polymer in the third thermoplastic polymer composition are the same as those mentioned above.

The total amount of compound (2) and trehalose in the third thermoplastic polymer composition is preferably 0.001-3 parts by weight, more preferably 0.02-2 parts by weight, still more preferably 0.02-1 part by weight, relative to 100 parts by weight of the thermoplastic polymer.

The weight ratio of compound (2) and trehalose in the third thermoplastic polymer composition (i.e., compound (2):trehalose) is preferably 1000:1-0.05:1. Compound (2):trehalose is more preferably 1000:1-0.1:1 from the aspect of processing stability of a thermoplastic polymer composition, and still more preferably 1000:1-0.5:1, particularly preferably 1000:1-1:1, from the aspect of suppression of color change of a thermoplastic polymer composition.

The third thermoplastic polymer composition may further contain compound (1). Only one kind of compound (1) may be used or two or more kinds thereof may be used in combination. Explanations of compound (1) are the same as those mentioned above.

The third thermoplastic polymer composition may further contain at least one selected from the group consisting of compounds (3)-(7). Only one kind of compounds (3)-(7) may be used or two or more kinds thereof may be used in combination. Explanations of compounds (3)-(7) are the same as those mentioned above.

The third thermoplastic polymer composition may further contain compound (8). Only one kind of compound (8) may be used or two or more kinds thereof may be used in combination. Explanations of compound (8) are the same as those mentioned above.

Of compound (1) and compounds (3)-(8) usable for the third thermoplastic polymer composition, compound (1), compound (3) and compound (8) are preferable.

When the third thermoplastic polymer composition contains at least one of compound (1) and compounds (3)-(8), the content of each of compound (1) and compounds (3)-(8) is preferably 0.001-3 parts by weight, more preferably 0.02-2 parts by weight, relative to 100 parts by weight of the third to thermoplastic polymer composition.

Next, the fourth thermoplastic polymer composition is explained. The fourth thermoplastic polymer composition contains trehalose, a thermoplastic polymer and at least one selected from the group consisting of compounds (3)-(7) (i.e., organic phosphorous compound). Only one kind of compounds (3)-(7) may be used or two or more kinds thereof may be used in combination. Explanations of compounds (3)-(7) and the thermoplastic polymer in the fourth thermoplastic polymer composition are the same as those mentioned above.

The total amount of trehalose and the compound selected from the group consisting of compounds (3)-(7) in the fourth thermoplastic polymer composition is preferably 0.001-3 parts by weight, more preferably 0.02-2 parts by weight, still more preferably 0.02-1 part by weight, relative to 100 parts by weight of the thermoplastic polymer.

The weight ratio of the compound selected from the group consisting of compounds (3)-(7) and trehalose in the fourth thermoplastic polymer composition (i.e., compound selected from the group consisting of compounds (3)-(7):trehalose) is preferably 1000:1-0.05:1. The compound selected from the group consisting of compounds (3)-(7):trehalose is more preferably 1000:1-0.1:1 from the aspect of processing stability of a thermoplastic polymer composition, and still more preferably 1000:1-0.5:1, particularly preferably 1000:1-1:1, from the aspect of suppression of color change of a thermoplastic polymer composition.

The fourth thermoplastic polymer composition may further contain at least one selected from the group consisting of compound (1), compound (2) and compound (8). Only one kind of each of compound (1), compound (2) and compound (8) may be used or two or more kinds thereof may be used in combination. Explanations of compound (1), compound (2) and compound (8) are the same as those mentioned above.

When the fourth thermoplastic polymer composition contains at least one of compound (1), compound (2) and compound (8), the content of each of compound (1), compound (2) and compound (8) is preferably 0.001-3 parts by weight, more preferably 0.02-2 parts by weight, relative to 100 parts by weight of the fourth thermoplastic polymer composition.

The thermoplastic polymer composition of the present invention (i.e., the first-fourth thermoplastic polymer compositions) may contain additives other than the above-mentioned components (hereinafter to be abbreviated as “other additives”). Only one kind of other additives may be used or two or more kinds thereof may be used in combination. Examples of other additive include antioxidant, UV absorber, light stabilizer, stabilizer, lubricant, metal deactivator, nucleating agent, antistatic agent, flame-retardant, filler, pigment, inorganic filler and the like.

Examples of the antioxidant include phenol antioxidant (excluding compound (1) and compound (2)), sulfur antioxidant, phosphorus antioxidant (excluding compounds (3)-(8)), hydroquinone antioxidant and the like.

Examples of the phenol antioxidant include those described in the following [1]-[16] and the like.

[1] alkylated monophenol such as 2,6-di-t-butyl-4-methylphenol, 2,4,6-tri-t-butylphenol, 2,6-di-t-butylphenol, 2-t-butyl-4,6-dimethylphenol, 2,6-di-t-butyl-4-ethylphenol, 2,6-di-t-butyl-4-n-butylphenol, 2,6-di-t-butyl-4-isobutylphenol, 2,6-dicyclopentyl-4-methylphenol, 2-(α-methylcyclohexyl)-4,6-dimethylphenol, 2,6-dioctadecyl-4-methylphenol, 2,4,6-tricyclohexylphenol, 2,6-di-t-butyl-4-methoxymethylphenol, 2,6-di-nonyl-4-methylphenol, 2,4-dimethyl-6-(1′-methylundecyl-1′-yl)phenol, 2,4-dimethyl-6-(1′-methylheptadecyl-1′-yl)phenol, 2,4-dimethyl-6-(1′-methyltridecyl-1′-yl)phenol and the like.[2] alkylthiomethylphenol such as 2,4-bis(octylthiomethyl)-6-t-butylphenol, 2,4-bis(octylthiomethyl)-6-methylphenol, 2,4-bis(octylthiomethyl)-6-ethylphenol, 2,6-bis(dodecylthiomethyl)-4-nonylphenol and the like.[3] alkylidene bisphenol and derivatives thereof such as 2,2′-methylenebis(4-methyl-6-t-butylphenol), 2,2′-methylenebis(4-ethyl-6-t-butylphenol), 2,2′-methylenebis[4-methyl-6-(α-methylcyclohexyl)phenol], 2,2′-methylenebis(4-methyl-6-cyclohexylphenol), 2,2′-methylenebis(4-methyl-6-nonylphenol), 2,2′-methylenebis(4,6-di-t-butylphenol), 2,2′-ethylidenebis(4,6-di-t-butylphenol), 2,2′-ethylidenebis(4-isobutyl-6-t-butylphenol), 2,2′-methylenebis[6-(α-methylbenzyl)-4-nonylphenol], 2,2′-methylenebis[6-(α,α-dimethylbenzyl)-4-nonylphenol], 4,4′-methylenebis(6-t-butyl-2-methylphenol), 4,4′-methylenebis(2,6-di-t-butylphenol), 4,4′-butylidenebis(3-methyl-6-t-butylphenol), 1,1-bis(4-hydroxyphenyl)cyclohexane, 1,1-bis(5-t-butyl-4-hydroxy-2-methylphenyl)butane, 2,6-bis(3-t-butyl-5-methyl-2-hydroxybenzyl)-4-methylphenol, 1,1,3-tris(5-t-butyl-4-hydroxy-2-methylphenyl)butane, 1,1-bis(5-t-butyl-4-hydroxy-2-methylphenyl)-3-n-dodecylmercaptobutane, ethylene glycol bis[3,3-bis(3′-t-butyl-4′-hydroxyphenyl)butyrate], bis(3-t-butyl-4-hydroxy-5-methylphenyl)dicyclopentadiene, bis[2-(3′-t-butyl-2′-hydroxy-5′-methylbenzyl)-6-t-butyl-4-methylphenyl]terephthalate, 1,1-bis(3,5-dimethyl-2-hydroxyphenyl)butane, 2,2-bis(3,5-di-t-butyl-4-hydroxyphenyl)propane, 2,2-bis(5-t-butyl-4-hydroxy-2-methylphenyl)-4-n-dodecylmercaptobutane, 1,1,5,5-tetra(5-t-butyl-4-hydroxy-2-methylphenyl)pentane and the like.[4] acylaminophenol derivative such as 4-hydroxylauryl anilide, 4-hydroxystearic anilide, octyl-N-(3,5-di-t-butyl-4-hydroxyphenyl)carbamate and the like.[5] ester of β-(3,5-di-t-butyl-4-hydroxyphenyl)propionic acid and a monovalent or polyvalent alcohol (e.g., methanol, ethanol, octanol, octadecanol, ethylene glycol, 1,3-propanediol, 1,4-butanediol, 1,6-hexanediol, 1,9-nonanediol, neopentylglycol, diethylene glycol, thioethylene glycol, spiroglycol, triethylene glycol, pentaerythritol, tris(hydroxyethyl)isocyanurate, N,N″-bis(hydroxyethyl)oxamide, 3-thiaundecanol, 3-thiapentadecanol, trimethylhexanediol, trimethylolpropane, 4-hydroxymethyl-1-phospha-2,6,7-trioxabicyclo[2,2,2]octane or a mixture thereof and the like).[6] bis(hydroxyphenyl)sulfide such as 2,2′-thiobis(6-t-butylphenol), 2,2′-thiobis(4-methyl-6-t-butylphenol), 2,2′-thiobis(4-octylphenol), 4,4′-thiobis(2-methyl-6-t-butylphenol), 4,4′-bis(2,6-dimethyl-4-hydroxyphenyl)sulfide and the like.[7] 0-benzyl derivative, N-benzyl derivative and S-benzyl derivative such as 3,5,3′,5′-tetra-t-butyl-4,4′-dihydroxydibenzyl ether, octadecyl 4-hydroxy-3,5-dimethylbenzylmercaptoacetate, tris(3,5-di-t-butyl-4-hydroxybenzyl)amine, bis(4-t-butyl-3-hydroxy-2,6-dimethylbenzyl) dithioterephthalate, bis(3,5-di-t-butyl-4-hydroxybenzyl)sulfide, isooctyl 3,5-di-t-butyl-4-hydroxybenzylmercaptoacetate and the like.[8] triazine derivative such as 2,4-bis(n-octylthio)-6-(4-hydroxy-3,5-di-t-butylanilino)-1,3,5-triazine, 2-n-octylthio-4,6-bis(4-hydroxy-3,5-di-t-butylanilino)-1,3,5-triazine, 2-n-octylthio-4,6-bis(4-hydroxy-3,5-di-t-butylphenoxy)-1,3,5-triazine, 2,4,6-tris(3,5-di-t-butyl-4-phenoxy)-1,3,5-triazine, tris(4-t-butyl-3-hydroxy-2,6-dimethylbenzyl)isocyanurate, tris(3,5-di-t-butyl-4-hydroxybenzyl)isocyanurate, 2,4,6-tris(3,5-di-t-butyl-4-hydroxyphenylethyl)-1,3,5-triazine, 2,4,6-tris(3,5-di-t-butyl-4-hydroxyphenylpropyl)-1,3,5-triazine, tris(3,5-dicyclohexyl-4-hydroxybenzyl)isocyanurate, tris[2-(3′,5′-di-t-butyl-4′-hydroxycinnamoyloxy)ethyl]isocyanurate and the like.[9] hydroxybenzylated malonate derivative such as dioctadecyl 2,2-bis(3,5-di-t-butyl-2-hydroxybenzyl)malonate, dioctadecyl 2-(3-t-butyl-4-hydroxy-5-methylbenzyl)malonate, didodecylmercaptoethyl 2,2-bis(3,5-di-t-butyl-4-hydroxybenzyl)malonate, bis[4-(1,1,3,3-tetramethylbutyl)phenyl] 2,2-bis(3,5-di-t-butyl-4-hydroxybenzyl)malonate and the like.[10] aromatic hydroxybenzyl derivative such as 1,3,5-trimethyl-2,4,6-tris(3,5-di-t-butyl-4-hydroxybenzyl)benzene, 1,4-bis(3,5-di-t-butyl-4-hydroxybenzyl)-2,3,5,6-tetramethylbenzene, 2,4,6-tris(3,5-di-t-butyl-4-hydroxybenzyl)phenol and the like.[11] benzylphosphonate derivative such as dimethyl 3,5-di-t-butyl-4-hydroxybenzylphosphonate, diethyl 3,5-di-t-butyl-4-hydroxybenzylphosphonate, dioctadecyl 3,5-di-t-butyl-4-hydroxybenzylphosphonate, dioctadecyl 5-t-butyl-4-hydroxy-3-methylbenzylphosphonate, calcium salt of 3,5-di-t-butyl-4-hydroxybenzylphosphonic acid monoester and the like.[12] ester of β-(5-t-butyl-4-hydroxy-3-methylphenyl)propionic acid and a monovalent or polyvalent alcohol (e.g., methanol, ethanol, octanol, octadecanol, ethylene glycol, 1,3-propanediol, 1,4-butanediol, 1,6-hexanediol, 1,9-nonanediol, neopentylglycol, diethylene glycol, thioethylene glycol, spiroglycol, triethylene glycol, pentaerythritol, tris(hydroxyethyl)isocyanurate, N,N′-bis(hydroxyethyl)oxamide, 3-thiaundecanol, 3-thiapentadecanol, trimethylhexanediol, trimethylolpropane, 4-hydroxymethyl-1-phospha-2,6,7-trioxabicyclo[2,2,2]octane or a mixture thereof and the like).[13] ester of β-(3,5-dicyclohexyl-4-hydroxyphenyl)propionic acid and a monovalent or polyvalent alcohol (e.g., methanol, ethanol, octanol, octadecanol, ethylene glycol, 1,3-propanediol, 1,4-butanediol, 1,6-hexanediol, 1,9-nonanediol, neopentylglycol, diethylene glycol, thioethylene glycol, spiroglycol, triethylene glycol, pentaerythritol, tris(hydroxyethyl)isocyanurate, N,N′-bis(hydroxyethyl)oxamide, 3-thiaundecanol, 3-thiapentadecanol, trimethylhexanediol, trimethylolpropane, 4-hydroxymethyl-1-phospha-2,6,7-trioxabicyclo[2,2,2]octane or a mixture thereof and the like).[14] ester of 3,5-di-t-butyl-4-hydroxyphenylacetic acid and a monovalent or polyvalent alcohol (e.g., methanol, ethanol, octanol, octadecanol, ethylene glycol, 1,3-propanediol, 1,4-butanediol, 1,6-hexanediol, 1,9-nonanediol, neopentylglycol, diethylene glycol, thioethylene glycol, spiroglycol, triethylene glycol, pentaerythritol, tris(hydroxyethyl)isocyanurate, N,N′-bis(hydroxyethyl)oxamide, 3-thiaundecanol, 3-thiapentadecanol, trimethylhexanediol, trimethylolpropane, 4-hydroxymethyl-1-phospha-2,6,7-trioxabicyclo[2,2,2]octane or a mixture thereof).[15] amide of β-(3,5-di-t-butyl-4-hydroxyphenyl)propionic acid such as N,N′-bis[3-(3′,5′-di-t-butyl-4′-hydroxyphenyl)propionyl]hydrazine, N,N′-bis[3-(3′,5′-di-t-butyl-4′-hydroxyphenyl)propionyl]hexamethylenediamine, N,N′-bis[3-(3′,5′-di-t-butyl-4′-hydroxyphenyl)propionyl]trimethylenediamine and the like.[16] tocopherols such as α-tocopherol, β-tocopherol, γ-tocopherol, δ-tocopherol and the like.

Examples of the sulfur antioxidant include dilauryl 3,3′-thiodipropionate, tridecyl 3,3′-thiodipropionate, dimyristyl 3,3′-thiodipropionate, distearyl 3,3′-thiodipropionate, lauryl stearyl 3,3′-thiodipropionate, neopentanetetrakis(3-lauryl thiopropionate) and the like.

Examples of the phosphorus antioxidant include trilauryl phosphite, trioctadecyl phosphite, tristearylsorbitol triphosphite, 2,2′-ethylidenebis(4,6-di-t-butylphenyl) fluorophosphite, bis(2,4-di-t-butyl-6-methylphenyl)ethyl phosphite, bis(2,4-di-t-butyl-6-methylphenyl)methyl phosphite, 2-(2,4,6-tri-t-butylphenyl)-5-ethyl-5-butyl-1,3,2-oxaphosphorinan and the like.

Examples of the hydroquinone antioxidant include 2,6-di-t-butyl-4-methoxyphenol, 2,5-di-t-butylhydroquinone, 2,5-di-t-pentylhydroquinone, 2,6-diphenyl-4-octadecyloxyphenol, 2,6-di-t-butylhydroquinone, 2,5-di-t-butyl-4-hydroxyanisole, 3,5-di-t-butyl-4-hydroxyphenyl stearate, bis(3,5-di-t-butyl-4-hydroxyphenyl) adipate and the like.

Examples of the UV absorber include those described in the following [1]-[3] and the like.

[1] salicylate derivative such as phenyl salicylate, 4-t-butylphenyl salicylate, 2,4-di-t-butylphenyl 3′,5′-di-t-butyl-4′-hydroxybenzoate, 4-t-octylphenyl salicylate, bis(4-t-butylbenzoyl)resorcinol, benzoylresorcinol, hexadecyl 3′,5′-di-t-butyl-4′-hydroxybenzoate, octadecyl 3′,5′-di-t-butyl-4′-hydroxybenzoate, 2-methyl-4,6-di-t-butylphenyl 3′,5′-di-t-butyl-4′-hydroxybenzoate and the like.[2] 2-hydroxybenzophenone derivative such as 2,4-dihydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-octoxybenzophenone, 2,2′-dihydroxy-4-methoxybenzophenone, bis(5-benzoyl-4-hydroxy-2-methoxyphenyl)methane, 2,2′,4,4′-tetrahydroxybenzophenone and the like.[3] 2-(2′-hydroxyphenyl)benzotriazoles such as 2-(2-hydroxy-5-methylphenyl)benzotriazole, 2-(3′,5′-di-t-butyl-2′-hydroxyphenyl)benzotriazole, 2-(5′-t-butyl-2′-hydroxyphenyl)benzotriazole, 2-(2′-hydroxy-5′-t-octylphenyl)benzotriazole, 2-(3-t-butyl-2-hydroxy-5-methylphenyl)-5-chlorobenzotriazole, 2-(3′-sec-butyl-2′-hydroxy-5′-t-butylphenyl)benzotriazole, 2-(2′-hydroxy-4′-octyloxyphenyl)benzotriazole, 2-(3′,5′-di-t-pentyl-2′-hydroxyphenyl)benzotriazole, 2-[2′-hydroxy-3′,5′-bis(α,α-dimethylbenzyl)phenyl]-2H-benzotriazole, 2-[(3′-t-butyl-2′-hydroxyphenyl)-5′-(2-octyloxycarbonylethyl)phenyl]-5-chlorobenzotriazole, 2-[3′-t-butyl-5′-[2-(2-ethylhexyloxy)carbonylethyl]-2′-hydroxyphenyl]-5-chlorobenzotriazole, 2-[3′-t-butyl-2′-hydroxy-5′-(2-methoxycarbonylethyl)phenyl]-5-chlorobenzotriazole, 2-[3′-t-butyl-2′-hydroxy-5′-(2-methoxycarbonylethyl)phenyl]benzotriazole, 2-[3′-t-butyl-2′-hydroxy-5-(2-octyloxycarbonylethyl)phenyl]benzotriazole, 2-[3′-t-butyl-2′-hydroxy-5′-[2-(2-ethylhexyloxy)carbonylethyl]phenyl]benzotriazole, 2-[2-hydroxy-3-(3,4,5,6-tetrahydrophthalimidomethyl)-5-methylphenyl]benzotriazole, 2-(3,5-di-t-butyl-2-hydroxyphenyl)-5-chlorobenzotriazole, mixture of 2-(3′-dodecyl-2′-hydroxy-5′-methylphenyl)benzotriazole and 2-[3′-t-butyl-2′-hydroxy-5′-(2-isooctyloxycarbonylethyl)phenyl]benzotriazole, 2,2′-methylenebis[6-(2H-benzotriazol-2-yl)-4-(1,1,3,3-tetramethylbutyl)phenol], 2,2′-methylenebis[4-t-butyl-6-(2H-benzotriazol-2-yl)phenol], condensate of poly(3-11) (ethylene glycol) and 2-[3′-t-butyl-2′-hydroxy-5′-(2-methoxycarbonylethyl)phenyl]benzotriazole, condensate of poly(3-11) (ethylene glycol) and methyl 3-[3-(2H-benzotriazol-2-yl)-5-t-butyl-4-hydroxyphenyl]propionate, 2-ethylhexyl 3-[3-t-butyl-5-(5-chloro-2H-benzotriazol-2-yl)-4-hydroxyphenyl]propionate, octyl 3-[3-t-butyl-5-(5-chloro-2H-benzotriazol-2-yl)-4-hydroxyphenyl]propionate, methyl 3-[3-t-butyl-5-(5-chloro-2H-benzotriazol-2-yl)-4-hydroxyphenyl]propionate, 3-[3-t-butyl-5-(5-chloro-2H-benzotriazol-2-yl)-4-hydroxyphenyl]propionic acid and the like.

Examples of the light stabilizer include those described in the following [1]-[5] and the like.

[1] hindered amine light stabilizer, for example, those described in the following [a]-[c].[a] bis(2,2,6,6-tetramethyl-4-piperidyl) sebacate, bis(2,2,6,6-tetramethyl-4-piperidyl) succinate, bis(1,2,2,6,6-pentamethyl-4-piperidyl) sebacate, bis(N-octoxy-2,2,6,6-tetramethyl-4-piperidyl) sebacate, bis(N-benzyloxy-2,2,6,6-tetramethyl-4-piperidyl) sebacate, bis(N-cyclohexyloxy-2,2,6,6-tetramethyl-4-piperidyl) sebacate, bis(1,2,2,6,6-pentamethyl-4-piperidyl) 2-(3,5-di-t-butyl-4-hydroxybenzyl)-2-butylmalonate, bis(1-acryloyl-2,2,6,6-tetramethyl-4-piperidyl) 2,2-bis(3,5-di-t-butyl-4-hydroxybenzyl)malonate, bis(1,2,2,6,6-pentamethyl-4-piperidyl) decanedioate, 2,2,6,6-tetramethyl-4-piperidyl methacrylate, 4-[3-(3,5-di-t-butyl-4-hydroxyphenyl)propionyloxy]-1-[2-(3-(3,5-di-t-butyl-4-hydroxyphenyl)propionyloxy)ethyl]-2,2,6,6-tetramethylpiperidine, 2-methyl-2-(2,2,6,6-tetramethyl-4-piperidyl)amino-N-(2,2,6,6-tetramethyl-4-piperidyl)propionamide, tetrakis(2,2,6,6-tetramethyl-4-piperidyl) 1,2,3,4-butanetetracarboxylate, tetrakis(1,2,2,6,6-pentamethyl-4-piperidyl) 1,2,3,4-butanetetracarboxylate.[b] mixed ester of 1,2,3,4-butanetetracarboxylic acid and 1,2,2,6,6-pentamethyl-4-piperidinol and 1-tridecanol, mixed ester of 1,2,3,4-butanetetracarboxylic acid and 2,2,6,6-tetramethyl-4-piperidinol and 1-tridecanol, mixed ester of 1,2,3,4-butanetetracarboxylic acid and 1,2,2,6,6-pentamethyl-4-piperidinol and 3,9-bis(2-hydroxy-1,1-dimethylethyl)-2,4,8,10-tetraoxaspiro[5.5]undecane, mixed ester of 1,2,3,4-butanetetracarboxylic acid and 2,2,6,6-tetramethyl-4-piperidinol and 3,9-bis(2-hydroxy-1,1-dimethylethyl)-2,4,8,10-tetraoxaspiro[5.5]undecane.[c] polycondensate of dimethyl succinate and 1-(2-hydroxyethyl)-4-hydroxy-2,2,6,6-tetramethylpiperidine, poly[(6-morpholino-1,3,5-triazine-2,4-diyl)((2,2,6,6-tetramethyl-4-piperidyl)imino)hexamethylene((2,2,6,6-tetramethyl-4-piperidyl)imino)], poly[(6-(1,1,3,3-tetramethylbutyl)imino-1,3,5-triazine-2,4-diyl)((2,2,6,6-tetramethyl-4-piperidyl)imino)hexamethylene((2,2,6,6-tetramethyl-4-piperidyl)imino)], polycondensate of N,N′-bis(2,2,6,6-tetramethyl-4-piperidyl)hexamethylenediamine and 1,2-dibromoethane, N,N′,4,7-tetrakis[4,6-bis(N-butyl-N-(2,2,6,6-tetramethyl-4-piperidyl)amino)-1,3,5-triazin-2-yl]-4,7-diazadecane-1,10-diamine, N,N′,4-tris[4,6-bis(N-butyl-N-(2,2,6,6-tetramethyl-4-piperidyl)amino)-1,3,5-triazin-2-yl]-4,7-diazadecane-1,10-diamine, N,N′,4,7-tetrakis[4,6-bis(N-butyl-N-(1,2,2,6,6-pentamethyl-4-piperidyl)amino)-1,3,5-triazin-2-yl]-4,7-diazadecane-1,10-diamine, N,N′,4-tris[4,6-bis(N-butyl-N-(1,2,2,6,6-pentamethyl-4-piperidyl)amino)-1,3,5-triazin-2-yl]-4,7-diazadecane-1,10-diamine.[2] acrylate light stabilizer such as ethyl α-cyano-β,β-diphenylacrylate, isooctyl α-cyano-β,β-diphenylacrylate, methyl α-carbomethoxycinnamate, methyl α-cyano-β-methyl-p-methoxycinnamate, butyl α-cyano-β-methyl-p-methoxycinnamate, methyl α-carbomethoxy-p-methoxycinnamate, N-(⊕-carbomethoxy-β-cyanovinyl)-2-methylindoline and the like.[3] nickel light stabilizer such as nickel complex of 2,2′-thiobis-[4-(1,1,3,3-tetramethylbutyl)phenol], nickel dibutyldithiocarbamate, nickel salt of monoalkylester, nickel complex of ketoxime and the like.[4] oxamide light stabilizer such as 4,4′-dioctyloxyoxanilide, 2,2′-diethoxyoxanilide, 2,2′-dioctyloxy-5,5′-di-t-butylanilide, 2,2′-didodecyloxy-5,5′-di-t-butylanilide, 2-ethoxy-2′-ethyloxanilide, N,N′-bis(3-dimethylaminopropyl)oxamide, 2-ethoxy-5-t-butyl-2′-ethoxyanilide, 2-ethoxy-5,4′-di-t-butyl-2′-ethyloxanilide and the like.[5] 2-(2-hydroxyphenyl)-1,3,5-triazine light stabilizer such as 2,4,6-tris(2-hydroxy-4-octyloxyphenyl)-1,3,5-triazine, 2-(2-hydroxy-4-octyloxyphenyl)-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine, 2-(2,4-dihydroxyphenyl)-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine, 2,4-bis(2-hydroxy-4-propyloxyphenyl)-6-(2,4-dimethylphenyl)-1,3,5-triazine, 2-(2-hydroxy-4-octyloxyphenyl)-4,6-bis(4-methylphenyl)-1,3,5-triazine, 2-(2-hydroxy-4-dodecyloxyphenyl)-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine, 2-[2-hydroxy-4-(2-hydroxy-3-butyloxypropoxy)phenyl]-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine, 2-[2-hydroxy-4-(2-hydroxy-3-octyloxypropoxy)phenyl]-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine and the like.

Examples of the stabilizer include hydroxyamines such as N,N-dibenzylhydroxyamine, N,N-diethylhydroxyamine, N,N-dioctylhydroxyamine, N,N-dilauryl hydroxyamine, N,N-ditetradecylhydroxyamine, N,N-dihexadecylhydroxyamine, N,N-dioctadecylhydroxyamine, N-hexadecyl-N-octadecylhydroxyamine, N-heptadecyl-N-octadecylhydroxyamine and the like, and the like.

Examples of the lubricant include aliphatic hydrocarbon such as paraffin, wax and the like, C_8-22 higher fatty acid, metal (Al, Ca, Mg, Zn) salt of C_8-22 higher fatty acid, C_8-22 aliphatic alcohol, polyglycol, ester of C_4-22 fatty acid and C_4-18 aliphatic monovalent alcohol, C_8-22 higher aliphatic amide, silicone oil, rosin derivative and the like.

Of the aforementioned other additives, phenol antioxidant, phosphorus antioxidant, sulfur antioxidant, UV absorber and hindered amine light stabilizer are preferable, and phenol antioxidant is more preferable.

Examples of particularly preferable phenol antioxidant include those described below: 2,6-di-t-butyl-4-methylphenol, 2,4,6-tri-t-butylphenol, 2,4-bis(octylthiomethyl)-6-t-butylphenol, 2,2′-thiobis(6-t-butylphenol), 2,2′-methylenebis(4-methyl-6-t-butylphenol), 2,2′-methylenebis(4-ethyl-6-t-butylphenol), 2,2′-methylenebis[4-methyl-6-(α-methylcyclohexyl)phenol], 2,2′-methylenebis(4-methyl-6-cyclohexylphenol), 2,2′-methylenebis(4,6-di-t-butylphenol), 2,2′-ethylidenebis(4,6-di-t-butylphenol), 4,4′-methylenebis(6-t-butyl-2-methylphenol), 4,4′-methylenebis(2,6-di-t-butylphenol), 4,4′-butylidenebis(3-methyl-6-t-butylphenol), 1,1-bis(4-hydroxyphenyl)cyclohexane, 1,1-bis(5-t-butyl-4-hydroxy-2-methylphenyl)butane, 1,1,3-tris(5-t-butyl-4-hydroxy-2-methylphenyl)butane, ethylene glycol bis[3,3-bis(3′-t-butyl-4′-hydroxyphenyl)butyrate], 2,4,6-tris(3,5-di-t-butyl-4-phenoxy)-1,3,5-triazine, tris(4-t-butyl-3-hydroxy-2,6-dimethylbenzyl)isocyanurate, bis(3,5-di-t-butyl-4-hydroxybenzyl)isocyanurate, tris[2-(3′,5′-di-t-butyl-4′-hydroxycinnamoyloxy)ethyl]isocyanurate, diethyl 3,5-di-t-butyl-4-hydroxybenzylphosphonate, di-n-octadecyl 3,5-di-t-butyl-4-hydroxybenzylphosphonate, calcium salt of 3,5-di-t-butyl-4-hydroxybenzylphosphonic acid monoester, neopentanetetrayl tetrakis(3,5-di-t-butyl-4-hydroxycinnamate), thiodiethylene bis(3,5-di-t-butyl-4-hydroxycinnamate), 1,3,5-trimethyl-2,4,6-tris(3,5-di-t-butyl-4-hydroxybenzyl)benzene, 3,6-dioxaoctamethylene bis(3,5-di-t-butyl-4-hydroxycinnamate), hexamethylene bis(3,5-di-t-butyl-4-hydroxycinnamate), triethylene glycol bis(5-t-butyl-4-hydroxy-3-methylcinnamate), 3,9-bis[2-(3-(3-t-butyl-4-hydroxy-5-methylphenyl)propionyloxy)-1,1-dimethylethyl]-2,4,8,10-tetraoxaspiro[5.5]undecane, N,N′-bis[3-(3′,5′-di-t-butyl-4′-hydroxyphenyl)propionyl]hydrazine, N,N′-bis[3-(3′,5′-di-t-butyl-4′-hydroxyphenyl)propionyl]hexamethylenediamine.

Examples of particularly preferable phosphorus antioxidant include those described below: 2,2′-ethylidenebis(4,6-di-t-butylphenyl) fluorophosphite, bis(2,4-di-t-butyl-6-methylphenyl)ethyl phosphite, 2-(2,4,6-tri-t-butylphenyl)-5-ethyl-5-butyl-1,3,2-oxaphosphorinan.

Examples of particularly preferable UV absorber include those described below: phenyl salicylate, 4-t-butylphenyl salicylate, 2,4-di-t-butylphenyl 3′,5′-di-t-butyl-4′-hydroxybenzoate, 4-t-octylphenyl salicylate, 2,4-dihydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-octoxybenzophenone, 2,2′-dihydroxy-4-methoxybenzophenone, bis(5-benzoyl-4-hydroxy-2-methoxyphenyl)methane, 2,2′,4,4′-tetrahydroxybenzophenone, 2-(2-hydroxy-5-methylphenyl)benzotriazole, 2-(3′,5′-di-t-butyl-2′-hydroxyphenyl)benzotriazole, 2-(5′-t-butyl-2′-hydroxyphenyl)benzotriazole, 2-(2′-hydroxy-5′-t-octylphenyl)benzotriazole, 2-(3-t-butyl-2-hydroxy-5-methylphenyl)-5-chlorobenzotriazole, 2-(3′-sec-butyl-2′-hydroxy-5′-t-butylphenyl)benzotriazole, 2-(2′-hydroxy-4′-octyloxyphenyl)benzotriazole, 2-(3′,5′-di-t-pentyl-2′-hydroxyphenyl)benzotriazole, 2-[2′-hydroxy-3′,5′-bis(α,α-dimethylbenzyl)phenyl]-2H-benzotriazole.

Examples of particularly preferable hindered amine light stabilizer include those described below: bis(2,2,6,6-tetramethyl-4-piperidyl) sebacate, bis(1,2,2,6,6-pentamethyl-4-piperidyl) sebacate, bis(N-octoxy-2,2,6,6-tetramethyl-4-piperidyl) sebacate, bis(N-benzyloxy-2,2,6,6-tetramethyl-4-piperidyl) sebacate, bis(N-cyclohexyloxy-2,2,6,6-tetramethyl-4-piperidyl) sebacate, bis(1,2,2,6,6-pentamethyl-4-piperidyl) 2-(3,5-di-t-butyl-4-hydroxybenzyl)-2-butylmalonate, bis(1-acryloyl-2,2,6,6-tetramethyl-4-piperidyl) 2,2-bis(3,5-di-t-butyl-4-hydroxybenzyl)-2-butylmalonate, bis(2,2,6,6-tetramethyl-4-piperidyl) succinate, 2,2,6,6-tetramethyl-4-piperidyl methacrylate, 4-[3-(3,5-di-t-butyl-4-hydroxyphenyl)propionyloxy]-1-[2-(3-(3,5-di-t-butyl-4-hydroxyphenyl)propionyloxy)ethyl]-2,2,6,6-tetramethylpiperidine, 2-methyl-2-(2,2,6,6-tetramethyl-4-piperidyl)amino-N-(2,2,6,6-tetramethyl-4-piperidyl)propionamide, tetrakis(2,2,6,6-tetramethyl-4-piperidyl) 1,2,3,4-butanetetracarboxylate, tetrakis(1,2,6,6-pentamethyl-4-piperidyl) 1,2,3,4-butanetetracarboxylate, mixed ester of 1,2,3,4-butanetetracarboxylic acid and 1,2,2,6,6-pentamethyl-4-piperidinol and 1-tridecanol, mixed ester of 1,2,3,4-butanetetracarboxylic acid and 2,2,6,6-tetramethyl-4-piperidinol and 1-tridecanol, mixed ester of 1,2,3,4-butanetetracarboxylic acid and 1,2,2,6,6-pentamethyl-4-piperidinol and 3,9-bis(2-hydroxy-1,1-dimethylethyl)-2,4,8,10-tetraoxaspiro[5.5]undecane, mixed ester of 1,2,3,4-butanetetracarboxylic acid and 2,2,6,6-tetramethyl-4-piperidinol and 3,9-bis(2-hydroxy-1,1-dimethylethyl)-2,4,8,10-tetraoxaspiro[5.5]undecane, polycondensate of dimethyl succinate and 1-(2-hydroxyethyl)-4-hydroxy-2,2,6,6-tetramethylpiperidine, poly[(6-morpholino-1,3,5-triazine-2,4-diyl)((2,2,6,6-tetramethyl-4-piperidyl)imino)hexamethylene((2,2,6,6-tetramethyl-4-piperidyl)imino)], poly[(6-(1,1,3,3-tetramethylbutyl)imino-1,3,5-triazine-2,4-diyl)((2,2,6,6-tetramethyl-4-piperidyl)imino)hexamethylene((2,2,6,6-tetramethyl-4-piperidyl)imino)].

Examples of the production method of the thermoplastic polymer composition of the present invention (i.e., the first-fourth thermoplastic polymer compositions) include

(a) a method including adding, when kneading a thermoplastic polymer, essential components compound (1)-compound (8) and trehalose, and, where necessary, optional components compound (1)-compound (8) and other additives separately to the thermoplastic polymer;

(b) a method including first mixing essential components compound (1)-compound (8) and trehalose, and, where necessary, optional components compound (1)-compound (8) and other additives to give a stabilizer composition, then mixing the obtained stabilizer composition with a thermoplastic polymer;

and the like. In view of the dispersibility of the essential components compound (1)-compound (8) and trehalose in a thermoplastic polymer, the method of the aforementioned (b) is preferable.

The production method of the stabilizer composition in the method of the aforementioned (b) is similar to the exemplified method described in the below-mentioned production method of a stabilizer composition.

Examples of the mixing method of a stabilizer composition and a thermoplastic polymer include

(c) a method including dry-blending a stabilizer composition and a thermoplastic polymer, melt-kneading them and extruding the mixture in a single screw or multiscrew extruder to give pellets of a thermoplastic polymer composition;

(d) a method including dissolving a stabilizer composition in a solvent such as cyclohexane and the like to give a solution of the stabilizer composition, adding the solution to a polymer solution after completion of thermoplastic polymer polymerization, and desolvating the mixture;

and the like.

The obtained thermoplastic polymer composition may be supplied in a molten state without cooling to a molding machine for molding. The molding method is not particularly limited and, for example, molding method such as injection molding method, extrusion molding method, extrusion blow molding method, injection blow molding method, biaxial orientation blow molding method and the like can be used.

By cooling after molding, a thermoplastic polymer molded product comprised of the thermoplastic polymer composition of the present invention is obtained. Examples of the use of the obtained thermoplastic polymer molding product include electronic component (for example, coil bobbin, connector, switch, resistor component, socket, relay, condenser case, fuse, motor, oven, printed circuit board, IC manufacturing equipment, lamp and the like), automobile part (for example, air outlet garnish, hood vent, distributor cap, exhaust gas control valve and the like), clock component (for example, machine component such as gear, cam and the like, ground plane and the like), camera component (for example, bottom cover, barrel, lever and the like), component of leisure goods (for example, reel and the like), household electrical appliance housing, illumination wiring equipment, film, bottle, fiber, septic tank, toilet tank, bath tub, unit bath, water tank, boats and ships, chemicals tank, pipe, corrugated plate, flat plate, paint, decorative laminate, mounting agent for electronic component, resin concrete and the like.

Next, the stabilizer composition of the present invention (i.e., the first-fourth stabilizer compositions) is explained. The stabilizer composition of the present invention is used to improve processing stability of thermoplastic polymer compositions. The processing stability of a thermoplastic polymer composition can be evaluated by the method described in the below-mentioned Examples.

First, the first stabilizer composition is explained. The first stabilizer composition contains compound (1) and trehalose. Only one kind of compound (1) may be used or two or more kinds thereof may be used in combination. Explanations of compound (1) and trehalose are the same as those mentioned above.

The weight ratio of compound (1) and trehalose in the first stabilizer composition (i.e., compound (1):trehalose) is preferably 1000:1-0.05:1. Compound (1):trehalose is more preferably 1000:1-0.1:1 from the aspect of processing stability of the thermoplastic polymer composition, and still more preferably 1000:1-0.5:1, particularly preferably 1000:1-1:1, from the aspect of suppression of color change of the thermoplastic polymer composition.

The first stabilizer composition may contain components other than compound (1) and trehalose as long as the effect of the present invention is not inhibited. For example, the first stabilizer composition may further contain compound (2). In addition, the first stabilizer composition may further contain at least one selected from the group consisting of compounds (3)-(7). Only one kind of compounds (2)-(7) may be used or two or more kinds thereof may be used in combination. Explanations of compound (2)-compound (7) are the same as those mentioned above.

The content of compound (2) in the first stabilizer composition is preferably 0-90 parts by weight, more preferably 0.1-80 parts by weight, relative to 100 parts by weight of the first stabilizer composition. The total amount of the compounds selected from the group consisting of compounds (3)-(7) in the first stabilizer composition is preferably 0-10 parts by weight, more preferably 0.001-5 parts by weight, relative to 100 parts by weight of the first stabilizer composition.

The first stabilizer composition may further contain other additives. Explanations of other additives are the same as those mentioned above.

The second stabilizer composition is now explained. The second stabilizer composition contains compound (8) and trehalose. Only one kind of compound (8) may be used or two or more kinds thereof may be used in combination. Explanations of compound (8) and trehalose are the same as those mentioned above.

The weight ratio of compound (8) and trehalose in the second thermoplastic polymer composition (i.e., compound (8):trehalose) is preferably 1000:1-0.05:1. Compound (8):trehalose is more preferably 1000:1-0.1:1 from the aspect of processing stability of the thermoplastic polymer composition, and still more preferably 1000:1-0.5:1, particularly preferably 1000:1-1:1, from the aspect of suppression of color change of the thermoplastic polymer composition.

The second stabilizer composition may contain components other than compound (8) and trehalose as long as the effect of the present invention is not inhibited. For example, the second stabilizer composition may further contain compound (2). In addition, the second stabilizer composition may further contain at least one selected from the group consisting of compounds (3)-(7). Only one kind of compounds (2)-(7) may be used or two or more kinds thereof may be used in combination. Explanations of compound (2)-compound (7) are the same as those mentioned above.

The content of compound (2) in the second stabilizer composition is preferably O-90 parts by weight, more preferably 0.1-80 parts by weight, relative to 100 parts by weight of the second stabilizer composition. The total amount of the compounds selected from the group consisting of compounds (3)-(7) in the second stabilizer composition is preferably 0-10 parts by weight, more preferably 0.001-5 parts by weight, relative to 100 parts by weight of the second stabilizer composition.

The second stabilizer composition may further contain other additives. Explanations of other additives are the same as those mentioned above.

The third stabilizer composition is now explained. The third stabilizer composition contains compound (2) and trehalose. Only one kind of compound (2) may be used or two or more kinds thereof may be used in combination. Explanations of compound (2) and trehalose are the same as those mentioned above.

The third stabilizer composition preferably consists of compound (2) and trehalose. Here, “consists of compound (2) and trehalose” means the total amount of compound (2) and trehalose is not less than 99 wt % of the third stabilizer composition.

The weight ratio of compound (2) and trehalose in the third thermoplastic polymer composition (i.e., compound (2):trehalose) is preferably 1000:1-0.05:1. Compound (2):trehalose is more preferably 1000:1-0.1:1 from the aspect of processing stability of the thermoplastic polymer composition, and still more preferably 1000:1-0.5:1, further more preferably 1000:1-1:1, from the aspect of suppression of color change of the thermoplastic polymer composition.

The third stabilizer composition may contain components other than compound (2) and trehalose as long as the effect of the present invention is not inhibited. For example, the third stabilizer composition may further contain compound (1). In addition, the third stabilizer composition may further contain at least one selected from the group consisting of compounds (3)-(7). Moreover, the third thermoplastic polymer composition may further contain compound (8). Only one kind of compound (1) and compounds (3)-(8) may be used or two or more kinds thereof may be used in combination. Explanations of compound (1) and compounds (3)-(8) are the same as those mentioned above.

The content of each of compound (1) and compounds (3)-(8) in the third stabilizer composition is preferably 0-90 parts by weight, more preferably 0.1-80 parts by weight, relative to 100 parts by weight of the third stabilizer composition.

The third stabilizer composition may further contain other additives. Explanations of other additives are the same as those mentioned above.

The fourth stabilizer composition is now explained. The fourth stabilizer composition contains trehalose and at least one selected from the group consisting of compounds (3)-(7). Only one kind of compounds (3)-(7) may be used or two or more kinds thereof may be used in combination. Explanations of compounds (3)-(7) and trehalose are the same as those mentioned above.

The fourth stabilizer composition preferably consists of is trehalose and at least one selected from the group consisting of compounds (3)-(7). Here, “consists of trehalose and at least one selected from the group consisting of compounds (3)-(7)” means the total amount of trehalose and the compound selected from the group consisting of compounds (3)-(7) is not less than 99 wt % of the fourth stabilizer composition.

The weight ratio of the compound selected from the group consisting of compounds (3)-(7) and trehalose in the fourth thermoplastic polymer composition (i.e., compound selected from the group consisting of compounds (3)-(7):trehalose) is preferably 1000:1-0.05:1. The compound selected from the group consisting of compounds (3)-(7):trehalose is more preferably 1000:1-0.1:1 from the aspect of processing stability of the thermoplastic polymer composition, and still more preferably 1000:1-0.5:1, further more preferably 1000:1-1:1, from the aspect of suppression of color change of the thermoplastic polymer composition.

The fourth stabilizer composition may contain components other than compounds (3)-(7) and trehalose as long as the effect of the present invention is not inhibited. For example, the fourth stabilizer composition may further contain at least one selected from the group consisting of compound (1), compound (2) and compound (8). Only one kind of compound (1), compound (2) and compound (8) may be used or two or more kinds thereof may be used in combination. Explanations of compound (1), compound (2) and compound (8) are the same as those mentioned above.

The content of each of compound (1), compound (2) and compound (8) in the fourth stabilizer composition is preferably 0-90 parts by weight, more preferably 0.1-80 parts by weight, relative to 100 parts by weight of the fourth stabilizer composition.

The fourth stabilizer composition may further contain other additives. Explanations of other additives in the fourth thermoplastic polymer composition are the same as those mentioned above.

Examples of the production method of the stabilizer composition of the present invention include a method including mixing the essential components and optional components used as necessary (i.e., compounds (1)-(8), trehalose and other additives) of the first-fourth stabilizer compositions in a blending machine such as Henschel mixer, super mixer, high speed mixer and the like and the like. The thus-obtained mixture (stabilizer composition) may be further subjected to extrusion molding or agitation granulation.

EXAMPLES

The present invention is explained in more detail in the following by referring to Examples and the like. In the following, “part” and “%” is, unless particularly explained, on the weight basis. In addition, the “melt flow rate” is described as “MFR”.

The components used in the following Examples and the like are as follows.

Compound (1-1): 2,4-di-t-pentyl-6-[1-(3,5-di-t-pentyl-2-hydroxyphenyl)ethyl]phenyl acrylate (“Sumilizer (registered trade mark) GS(F)” manufactured by Sumitomo Chemical Company, Limited)

Compound (1-2): 2-t-butyl-6-(3-t-butyl-2-hydroxy-5-methylbenzyl)-4-methylphenyl acrylate (“Sumilizer (registered trade mark) GM” manufactured by Sumitomo Chemical Company, Limited)

Compound (2-1): octadecyl 3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate (“Irganox (registered trade mark) 1076” manufactured by BASF)

Compound (2-2): 3,9-bis[2-{3-(3-t-butyl-4-hydroxy-5-methylphenyl)propionyloxy}-1,1-dimethylethyl]-2,4,8,10-tetraoxaspiro[5.5]undecane (“Sumilizer (registered trade mark) GA-80” manufactured by Sumitomo Chemical Company, Limited)

Compound (2-3): pentaerythritol tetrakis[3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate] (“Irganox (registered trade mark) 1010” manufactured by BASF)

Compound (3-1): tris(2,4-di-t-butylphenyl) phosphite (“Irgafos (registered trade mark) 168” manufactured by BASF)

Compound (4-1): tetrakis(2,4-di-t-butylphenyl)-4,4-biphenylene diphoshonite (“Sandostab (registered trade mark) P-EPQ” manufactured by Clariant)

Compound (5-1): bis(2,6-di-t-butyl-4-methylphenyl) pentaerythritol diphosphite (“Adekastab (registered trade mark) PEP-36” manufactured by ADEKA)

Compound (5-2): bis(2,4-di-t-butylphenyl)pentaerythritol diphosphite (“Ultranox (registered trade mark) 626” manufactured by GE Plastics)

Compound (5-3): bis(2,4-dicumylphenyl)pentaerythritol diphosphite (“Doverphos S9228T” manufactured by Dover Chemical Corporation)

Compound (6-1): 6,6′,6″-[nitrilotris(ethyleneoxy)]tris(2,4,8,10-tetra-t-butyldibenzo[d,f][1,3,2]dioxaphosphepine) (“Irgafos(registered trade mark) 12” manufactured by BASF)

Compound (7-1): 2,2-methylenebis(4,6-di-t-butylphenyl) octyl phosphite (“Adekastab (registered trade mark) HP-10” manufactured by ADEKA)

Compound (8-1): 6-[3-(3-t-butyl-4-hydroxy-5-methylphenyl)propoxy]-2,4,8,10-tetra-t-butyldibenzo[d,f][1,3,2]dioxaphosphepine (“Sumilizer (registered trade mark) GP” manufactured by Sumitomo Chemical Company, Limited)

trehalose (manufactured by HAYASHIBARA CO., LTD.)

In the following Example 1-1-Example 1-253, the first stabilizer composition containing compound (1) and trehalose as essential components is used, in Example 2-1-Example 2-208, the second stabilizer composition containing compound (8) and trehalose as essential components is used, in Example 3-1-Example 3-134, the third stabilizer composition containing compound (2) and trehalose as essential components is used, and in Example 4-1-Example 4-199, the fourth stabilizer composition containing trehalose and at least one selected from the group consisting of compounds (3)-(7) as essential components is used.

Example 1-1

Production of Stabilizer Composition

Compound (1-1) (0.4 part) and trehalose (0.01 part) were mixed to produce a stabilizer composition.

Example 1-2-Example 1-4

Production of Stabilizer Composition

In the same manner as in Example 1-1 except that the amounts of the trehalose to be used were respectively set to 0.05 part, 0.1 part and 0.2 part, stabilizer compositions were produced.

Example 1-5-Example 1-8

Production of Stabilizer Composition

In the same manner as in Example 1-1-Example 1-4 except that compound (1-2) was used instead of compound (1-1), stabilizer compositions were respectively produced.

Example 1-9

Production of Thermoplastic Polymer Composition

A styrene-butadiene block copolymer (manufactured by Asahi Kasei Corp., 100 parts) and the total amount of the stabilizer composition obtained in Example 1-1 were mixed, and the mixture was kneaded using a laboplast mill (“4C-150” manufactured by Toyo Seiki Seisaku-sho, Ltd.) under a nitrogen atmosphere under the conditions of temperature 250° C. and screw rotation 100 rpm to give a thermoplastic polymer composition as pellets.

Example 1-10-Example 1-12

Production of Thermoplastic Polymer Composition

In the same manner as in Example 1-9 except that each stabilizer composition obtained in Example 1-2-Example 1-4 was used instead of the stabilizer composition obtained in Example 1-1, thermoplastic polymer compositions were obtained as pellets.

Comparative Example 1-1

In the same manner as in Example 1-9 except that compound (1-1) (0.4 part) was used instead of the stabilizer composition obtained in Example 1-1, a thermoplastic polymer composition was obtained as pellets.

Example 1-13-Example 1-16

Production of Thermoplastic Polymer Composition

In the same manner as in Example 1-9 except that each stabilizer composition obtained in Example 1-5-Example 1-8 was used instead of the stabilizer composition obtained in Example 1-1, thermoplastic polymer compositions were obtained as pellets.

Comparative Example 1-2

In the same manner as in Example 1-13 except that compound (1-2) (0.4 part) was used instead of the stabilizer composition obtained in Example 1-5, a thermoplastic polymer composition was obtained as pellets.

Experimental Example 1-1

Evaluation of Processing Stability Under Dynamic Condition

In Example 1-9-Example 1-13, Comparative Example 1-1 and Comparative Example 1-2, the time necessary for the torque of the laboplast mill to reach the maximum value was measured as a build-up time. A longer build-up time means more superior processing stability of the thermoplastic polymer composition under dynamic condition.

In addition, the progress rate of processing stability was calculated from the values of the build-up time of Examples and Comparative Examples, and based on the following formula:

progress rate of processing stability (%)=build-up time (minute) of Example×100/build-up time (minute) of Comparative Example.

For calculation of the progress rate of processing stability, the value of the build-up time of Comparative Example 1-1 was used for Example 1-9-Example 1-12 and the value of the build-up time of Comparative Example 1-2 was used for Example 1-13-Example 1-16.

The compositions of the stabilizer compositions of Example 1-1-Example 1-8 are shown in Table 1, and the compositions, build-up time and processing stability of the thermoplastic polymer compositions of Example 1-9-Example 1-16, Comparative Example 1-1 and Comparative Example 1-2 are shown in Table 2.

TABLE 1
stabilizer composition
	compound	compound
	(1-1)	(1-2)	trehalose	mass ratio of
	(part)	(part)	(part)	compound (1):trehalose
Ex. 1-1	0.4	—	0.01	40:1
Ex. 1-2	0.4	—	0.05	8:1
Ex. 1-3	0.4	—	0.1	4:1
Ex. 1-4	0.4	—	0.2	2:1
Ex. 1-5	—	0.4	0.01	40:1
Ex. 1-6	—	0.4	0.05	8:1
Ex. 1-7	—	0.4	0.1	4:1
Ex. 1-8	—	0.4	0.2	2:1

TABLE 2
thermoplastic polymer composition
	stabilizer		progress
	composition	build-up	rate (%) of
	SBS		amount	time	processing
	(part)	kind	(part)	(minute)	stability
Ex. 1-9	100	Ex. 1-1	0.41	26.8	103
Ex. 1-10	100	Ex. 1-2	0.45	26.9	103
Ex. 1-11	100	Ex. 1-3	0.5	36.0	138
Ex. 1-12	100	Ex. 1-4	0.6	40.7	157
Comp.	100	compound	0.4	26.0	—
Ex. 1-1		(1-1)
Ex. 1-13	100	Ex. 1-5	0.41	28.0	106
Ex. 1-14	100	Ex. 1-6	0.45	33.2	126
Ex. 1-15	100	Ex. 1-7	0.5	36.0	137
Ex. 1-16	100	Ex. 1-8	0.6	48.8	186
Comp.	100	compound	0.4	26.3	—
Ex. 1-2		(1-2)
SBS: styrene-butadiene block copolymer

Example 1-17

Production of Thermoplastic Polymer Composition

An ethylene-vinyl alcohol copolymer (manufactured by KURARAY CO., LTD., 100 parts), compound (1-1) (0.3 part) and trehalose (0.2 part) were dry-blended, the obtained mixture was knead-extruded by a single screw extruder having a screw diameter of 30 mm (“VS30-28 type extruder” manufactured by TANABE PLASTICS MACHINERY CO., LTD.) under the conditions of temperature 230° C. and screw rotation 50 rpm to give strands, and the strands were cut by a pelletizer to give a thermoplastic polymer composition as pellets.

Example 1-18

Production of Thermoplastic Polymer Composition

In the same manner as in Example 1-17 except that compound (1-1) (0.1 part) and trehalose (0.4 part) were used as a stabilizer composition, a thermoplastic polymer composition was obtained as pellets.

Comparative Example 1-3

In the same manner as in Example 1-17 except that only compound (1-1) (0.5 part) was used as a stabilizer, a thermoplastic polymer composition was obtained as pellets.

Experimental Example 1-2

Evaluation of Processing Stability Under Static Condition

For evaluation of the processing stability during operation of extrusion processing (i.e., under static conditions), Dwell MFR tests were performed using the pellets of each thermoplastic polymer composition obtained in Example 1-17, Example 1-18 and Comparative Example 1-3. The test was based on JIS K 7210, and 0 min Dwell MFR (g/10 min) and 30 min Dwell MFR (g/10 min) were measured by a melt indexer (L217-E14011 manufactured by Technol Seven Co., Ltd.) under the conditions of temperature in a cylinder 270° C. and load 2.16 kg. The 0 min Dwell MFR was measured after 5-min preheating time after filling pellets of the thermoplastic polymer composition in the cylinder. The 30 min Dwell MFR was measured after 30-min dwell time, including the preheating time, of the pellets of the thermoplastic polymer composition in the cylinder. The MFR variation rate was calculated by the following formula and using the thus-measured 0 min Dwell MFR and 30 min Dwell MFR:

MFR variation rate (%)=absolute value of (30 min Dwell MFR−0 min Dwell MFR)×100/(0 min Dwell MFR)

A smaller MFR variation rate means better processing stability of the thermoplastic polymer composition. The results are shown in Table 3.

TABLE 3
thermoplastic polymer composition
	stabilizer composition
				mass	0 min	30 min	MFR
		compound		ratio of	Dwell	Dwell	variation
	SBS	(1-1)	trehalose	compound	MFR	MFR	rate
	(part)	(part)	(part)	(1-1):trehalose	(g/10 min)	(g/10 min)	(%)
Ex.	100	0.3	0.2	3:2	10.1	10.9	7.9
1-17
Ex.	100	0.1	0.4	1:4	11.9	13.6	14.3
1-18
Com.	100	0.5	—	—	13.1	24.9	90.1
Ex.
1-3
SBS: styrene-butadiene block copolymer

Example 1-19-Example 1-22

Production of Stabilizer Composition

Compound (1-1), trehalose, compound (2-1) and compound (3-1) were mixed in the amounts described in Table 4 to give stabilizer compositions.

Example 1-23

Production of Thermoplastic Polymer Composition

A styrene-butadiene block copolymer (manufactured by DENKI KAGAKU KOGYO KABUSHIKI KAISHA, 100 parts) and the stabilizer composition (0.31 part) obtained in Example 1-19 were dry-blended, the obtained mixture was knead-extruded by a single screw extruder having a screw diameter of 30 mm (“VS30-28 type extruder” manufactured by TANABE PLASTICS MACHINERY CO., LTD.) under the conditions of temperature 230° C. and screw rotation 50 rpm to give strands, and the strands were cut by a pelletizer to give a thermoplastic polymer composition as pellets.

Example 1-24

Production of Thermoplastic Polymer Composition

In the same manner as in Example 1-23 except that the stabilizer composition (0.51 part) obtained in Example 1-20 was used instead of the stabilizer composition obtained in Example 1-19, a thermoplastic polymer composition was obtained as pellets.

Example 1-25

Production of Thermoplastic Polymer Composition

In the same manner as in Example 1-23 except that the stabilizer composition (0.51 part) obtained in Example 1-21 was used instead of the stabilizer composition obtained in Example 1-19, a thermoplastic polymer composition was obtained as pellets.

Example 1-26

Production of Thermoplastic Polymer Composition

In the same manner as in Example 1-23 except that the stabilizer composition (0.71 part) obtained in Example 1-22 was used instead of the stabilizer composition obtained in Example 1-19, a thermoplastic polymer composition was obtained as pellets.

Comparative Example 1-4

In the same manner as in Example 1-23 except that compound (1-1) (0.3 part) was used instead of the stabilizer composition obtained in Example 1-19, a thermoplastic polymer composition was obtained as pellets.

Experimental Example 1-3

Evaluation of Processing Stability Under Static Condition

Dwell MFR tests were performed in the same manner as in Experimental Example 1-2 and using the pellets of each thermoplastic polymer composition obtained in Example 1-23-Example 1-26 and Comparative Example 1-4. The results are shown in Table 5.

TABLE 4
stabilizer composition
	compound		compound	compound
	(1-1)	trehalose	(2-1)	(3-1)
	(part)	(part)	(part)	(part)
Ex. 1-19	0.3	0.01	—	—
Ex. 1-20	0.3	0.01	0.2	—
Ex. 1-21	0.3	0.01	—	0.2
Ex. 1-22	0.3	0.01	0.2	0.2

TABLE 5
thermoplastic polymer composition
	stabilizer	0 min	30 min	MFR
	composition	Dwell	Dwell	variation
	SBS		amount	MFR	MFR	rate
	(part)	kind	(part)	(g/10 min)	(g/10 min)	(%)
Ex.	100	Ex.	0.31	20.4	11.6	43.1
1-23		1-19
Ex.	100	Ex.	0.51	22.0	14.5	34.1
1-24		1-20
Ex.	100	Ex.	0.51	21.3	13.6	36.2
1-25		1-21
Ex.	100	Ex.	0.71	23.1	15.4	33.3
1-26		1-22
Comp.	100	compound	0.3	18.6	6.2	66.7
Ex.		(1-1)
1-4
SBS: styrene-butadiene block copolymer

Example 1-27-Example 1-31

Production of Stabilizer Composition

Compound (1-1) and trehalose in the amounts described in Table 6 were mixed to give stabilizer compositions.

Example 1-32-Example 1-36

Production of Thermoplastic Polymer Composition

In the same manner as in Example 1-23 except that each to stabilizer composition (0.2 part) obtained in Examples 1-27-31 was used instead of the stabilizer composition (0.31 part) obtained in Example 1-19, thermoplastic polymer compositions were obtained as pellets.

Experimental Example 1-4

Evaluation of Processing Stability Under Static Condition

Dwell MFR tests were performed in the same manner as in Experimental Example 1-2 and using the pellets of each thermoplastic polymer composition obtained in Example 1-32-Example 1-36. The results are shown in Table 7.

TABLE 6
stabilizer composition
	compound (1-1) (part)	trehalose (part)
Ex. 1-27	0.1998	0.0002
Ex. 1-28	0.1996	0.0004
Ex. 1-29	0.198	0.002
Ex. 1-30	0.1818	0.0182
Ex. 1-31	0.0667	0.1333

TABLE 7
thermoplastic polymer composition
	stabilizer			MFR
	composition	0 min	30 min	variation
	SBS		amount	Dwell MFR	Dwell MFR	rate
	(part)	kind	(part)	(g/10 min)	(g/10 min)	(%)
Ex.	100	Ex.	0.2	16.9	11.7	30.8
1-32		1-27
Ex.	100	Ex.	0.2	15.9	9.4	40.9
1-33		1-28
Ex.	100	Ex.	0.2	16.4	11.5	29.9
1-34		1-29
Ex.	100	Ex.	0.2	17.6	13.6	22.7
1-35		1-30
Ex.	100	Ex.	0.2	16.5	8.2	50.3
1-36		1-31
SBS: styrene-butadiene block copolymer

Example 1-37-Example 1-123

Production of Stabilizer Composition

Stabilizer compositions are obtained by mixing the components described in Table 8-1-Table 8-3. Thermoplastic polymer compositions containing these stabilizer compositions are predicted to be superior in processing stability.

TABLE 8-1
stabilizer composition
	compound		compound	compounds
	(1)	trehalose	(2)	(3)-(7)
		amount	amount		amount		amount
Example	kind	(part)	(part)	kind	(part)	kind	(part)
1-37	(1-1)	0.01	0.2	—	—	—	—
1-38	(1-1)	0.05	0.15	—	—	—	—
1-39	(1-1)	0.1	0.1	—	—	—	—
1-40	(1-1)	0.15	0.05	—	—	—	—
1-41	(1-1)	0.2	0.01	—	—	—	—
1-42	(1-1)	0.2	0.005	—	—	—	—
1-43	(1-1)	0.2	0.001	—	—	—	—
1-44	(1-1)	0.2	0.0005	—	—	—	—
1-45	(1-1)	0.2	0.0002	—	—	—	—
1-46	(1-1)	0.01	0.2	(2-2)	0.2
1-47	(1-1)	0.1	0.1	(2-2)	0.2	—	—
1-48	(1-1)	0.2	0.01	(2-2)	0.2	—	—
1-49	(1-1)	0.2	0.005	(2-2)	0.2	—	—
1-50	(1-1)	0.2	0.001	(2-2)	0.2	—	—
1-51	(1-1)	0.2	0.0005	(2-2)	0.2	—	—
1-52	(1-1)	0.01	0.2	(2-3)	0.2	—	—
1-53	(1-1)	0.1	0.1	(2-3)	0.2	—	—
1-54	(1-1)	0.2	0.01	(2-3)	0.2	—	—
1-55	(1-1)	0.2	0.005	(2-3)	0.2	—	—
1-56	(1-1)	0.2	0.001	(2-3)	0.2	—	—
1-57	(1-1)	0.2	0.0005	(2-3)	0.2	—	—
1-58	(1-1)	0.01	0.2	—	—	(4-1)	0.2
1-59	(1-1)	0.1	0.1	—	—	(4-1)	0.2
1-60	(1-1)	0.2	0.01	—	—	(4-1)	0.2
1-61	(1-1)	0.2	0.005	—	—	(4-1)	0.2
1-62	(1-1)	0.2	0.001	—	—	(4-1)	0.2
1-63	(1-1)	0.2	0.0005	—	—	(4-1)	0.2
1-64	(1-1)	0.01	0.2	—	—	(5-1)	0.2
1-65	(1-1)	0.1	0.1	—	—	(5-1)	0.2
1-66	(1-1)	0.2	0.01	—	—	(5-1)	0.2
1-67	(1-1)	0.2	0.005	—	—	(5-1)	0.2
1-68	(1-1)	0.2	0.001	—	—	(5-1)	0.2
1-69	(1-1)	0.2	0.0005	—	—	(5-1)	0.2

TABLE 8-2
stabilizer composition
	compound		compound	compounds
	(1)	trehalose	(2)	(3)-(7)
		amount	amount		amount		amount
Example	kind	(part)	(part)	kind	(part)	kind	(part)
1-70	(1-1)	0.01	0.2	—	—	(5-2)	0.2
1-71	(1-1)	0.1	0.1	—	—	(5-2)	0.2
1-72	(1-1)	0.2	0.01	—	—	(5-2)	0.2
1-73	(1-1)	0.2	0.005	—	—	(5-2)	0.2
1-74	(1-1)	0.2	0.001	—	—	(5-2)	0.2
1-75	(1-1)	0.2	0.0005	—	—	(5-2)	0.2
1-76	(1-1)	0.01	0.2	—	—	(5-3)	0.2
1-77	(1-1)	0.1	0.1	—	—	(5-3)	0.2
1-78	(1-1)	0.2	0.01	—	—	(5-3)	0.2
1-79	(1-1)	0.2	0.005	—	—	(5-3)	0.2
1-80	(1-1)	0.2	0.001	—	—	(5-3)	0.2
1-81	(1-1)	0.2	0.0005	—	—	(5-3)	0.2
1-82	(1-1)	0.01	0.2	—	—	(6-1)	0.2
1-83	(1-1)	0.1	0.1	—	—	(6-1)	0.2
1-84	(1-1)	0.2	0.01	—	—	(6-1)	0.2
1-85	(1-1)	0.2	0.005	—	—	(6-1)	0.2
1-86	(1-1)	0.2	0.001	—	—	(6-1)	0.2
1-87	(1-1)	0.2	0.0005	—	—	(6-1)	0.2
1-88	(1-1)	0.01	0.2	—	—	(7-1)	0.2
1-89	(1-1)	0.1	0.1	—	—	(7-1)	0.2
1-90	(1-1)	0.2	0.01	—	—	(7-1)	0.2
1-91	(1-1)	0.2	0.005	—	—	(7-1)	0.2
1-92	(1-1)	0.2	0.001	—	—	(7-1)	0.2
1-93	(1-1)	0.2	0.0005	—	—	(7-1)	0.2
1-94	(1-1)	0.01	0.2	(2-1)	0.2	(3-1)	0.2
1-95	(1-1)	0.1	0.1	(2-1)	0.2	(3-1)	0.2
1-96	(1-1)	0.2	0.01	(2-1)	0.2	(3-1)	0.2
1-97	(1-1)	0.2	0.005	(2-1)	0.2	(3-1)	0.2
1-98	(1-1)	0.2	0.001	(2-1)	0.2	(3-1)	0.2
1-99	(1-1)	0.2	0.0005	(2-1)	0.2	(3-1)	0.2
1-100	(1-1)	0.01	0.2	(2-2)	0.2	(3-1)	0.2
1-101	(1-1)	0.1	0.1	(2-2)	0.2	(3-1)	0.2
1-102	(1-1)	0.2	0.01	(2-2)	0.2	(3-1)	0.2
1-103	(1-1)	0.2	0.005	(2-2)	0.2	(3-1)	0.2
1-104	(1-1)	0.2	0.001	(2-2)	0.2	(3-1)	0.2
1-105	(1-1)	0.2	0.0005	(2-2)	0.2	(3-1)	0.2

TABLE 8-3
stabilizer composition
	compound		compound	compounds
	(1)	trehalose	(2)	(3)-(7)
		amount	amount		amount		amount
Example	kind	(part)	(part)	kind	(part)	kind	(part)
1-106	(1-1)	0.01	0.2	(2-3)	0.2	(3-1)	0.2
1-107	(1-1)	0.1	0.1	(2-3)	0.2	(3-1)	0.2
1-108	(1-1)	0.2	0.01	(2-3)	0.2	(3-1)	0.2
1-109	(1-1)	0.2	0.005	(2-3)	0.2	(3-1)	0.2
1-110	(1-1)	0.2	0.001	(2-3)	0.2	(3-1)	0.2
1-111	(1-1)	0.2	0.0005	(2-3)	0.2	(3-1)	0.2
1-112	(1-2)	0.01	0.2	—	—	—	—
1-113	(1-2)	0.05	0.15	—	—	—	—
1-114	(1-2)	0.1	0.1	—	—	—	—
1-115	(1-2)	0.15	0.05	—	—	—	—
1-116	(1-2)	0.2	0.01	—	—	—	—
1-117	(1-2)	0.2	0.005	—	—	—	—
1-118	(1-2)	0.2	0.001	—	—	—	—
1-119	(1-2)	0.2	0.0005	—	—	—	—
1-120	(1-2)	0.2	0.0002	—	—	—	—
1-121	(1-2)	0.1	0.1	(2-1)	0.2	—	—
1-122	(1-2)	0.1	0.1	—	—	(3-1)	0.2
1-123	(1-2)	0.1	0.1	(2-1)	0.2	(3-1)	0.2

Example 1-124-Example 1-253

Production of Thermoplastic Polymer Composition

In the same manner as in Example 1-4 except that the thermoplastic polymers (100 parts) described in Table 9-1-Table 9-4, and the stabilizer composition in the kinds and amounts described in Table 9-1-Table 9-4 are used, thermoplastic polymer compositions are obtained as pellets. The obtained thetmoplastic polymer compositions are predicted to be superior in processing stability.

The meanings of the abbreviations of the thermoplastic polymers described in Table 9-1-Table 9-4 are as follows. The MFR described below is the 0 min Dwell MFR of the thermoplastic polymer as measured under the conditions of Experimental Example 1-2.

P1-1: high density polyethylene (HDPE) (excluding P1-45-P1-50)P1-2: low density polyethylene (LDPE) (excluding P1-51-P1-57)P1-3: linear low density polyethylene (LLDPE) (excluding P1-58-P1-64)P1-4: ethylene-ethyl acrylate copolymer (EEA)P1-5: ethylene-vinyl acetate copolymer (EVA)P1-6: polypropylene (PP) (excluding P1-65-P1-71)P1-7: propylene-ethylene random copolymerP1-8: propylene-α-olefin random copolymerP1-9: propylene-ethylene-α-olefin copolymerP1-10: polystyrene (PS)P1-11: acrylonitrile-styrene copolymer (SAN)P1-12: acrylonitrile-butadiene-styrene copolymer (ABS)P1-13: special acrylic rubber-acrylonitrile-styrene copolymerP1-14: acrylonitrile-chlorinated polyethylene-styrene copolymer (ACS)P1-15: polybutadiene rubber (BR)P1-16: styrene-butadiene copolymer (SB)P1-17: styrene-butadiene block copolymer (SBS)P1-18: chlorinated polyethylene (CPE)P1-19: polychloropreneP1-20: chlorinated rubberP1-21: poly(vinyl chloride) (PVC)P1-22: poly(vinylidene chloride) (PVDC)P1-23: methacrylate resinP1-24: fluororesinP1-25: polyacetal (POM)P1-26: grafted poly(phenylene ether) resinP1-27: poly(phenylene sulfide) resin (PPS)P1-28: polyurethane (PU) (excluding P1-75-P1-77)P1-29: polyamide (PA) (excluding P1-78-P1-86)P1-30: poly(ethylene terephthalate) (PET)P1-31: poly(butylene terephthalate) (PBT)P1-32: poly(lactic acid) (PLA)P1-33: polycarbonate (PC)P1-34: polyacrylateP1-35: polysulfone (PPSU)P1-36: poly(ether ether ketone) (PEEK)P1-37: poly(ether sulfone) (PES)P1-38: aromatic polyesterP1-39: diallyl phthalate prepolymerP1-40: silicone resin (SI)P1-41: 1,2-polybutadieneP1-42: polyisopreneP1-43: butadiene-acrylonitrile copolymer (NBR)P1-44: ethylene-methyl methacrylate copolymer (EMMA)P1-45: high density polyethylene (HDPE) with MFR of 40 g/10 minP1-46: high density polyethylene (HDPE) with MFR of 20 g/10 minP1-47: high density polyethylene (HDPE) with MFR of 10 g/10 minP1-48: high density polyethylene (HDPE) with MFR of 5 g/10 minP1-49: high density polyethylene (HDPE) with MFR of 1 g/10 minP1-50: high density polyethylene (HDPE) with MFR of 0.1 g/10 minP1-51: low density polyethylene (LDPE) with MFR of 75 g/10 minP1-52: low density polyethylene (LDPE) with MFR of 50 g/10 minP1-53: low density polyethylene (LDPE) with MFR of 25 g/10 minP1-54: low density polyethylene (LDPE) with MFR of 10 g/10 minP1-55: low density polyethylene (LDPE) with MFR of 5 g/10 minP1-56: low density polyethylene (LDPE) with MFR of 2 g/10 minP1-57: low density polyethylene (LDPE) with MFR of 1 g/10 minP1-58: low density polyethylene (LDPE) with MFR of 0.1 g/10 minP1-59: linear low density polyethylene (LLDPE) with MFR of 100 g/10 minP1-60: linear low density polyethylene (LLDPE) with MFR of 50 g/10 minP1-61: linear low density polyethylene (LLDPE) with MFR of 25 g/10 minP1-62: linear low density polyethylene (LLDPE) with MFR of 10 g/10 minP1-63: linear low density polyethylene (LLDPE) with MFR of 5 g/10 minP1-64: linear low density polyethylene (LLDPE) with MFR of 1 g/10 minP1-65: linear low density polyethylene (LLDPE) with MFR of 0.1 g/10 minP1-66: polypropylene (PP) with MFR of 100 g/10 minP1-67: polypropylene (PP) with MFR of 50 g/10 minP1-68: polypropylene (PP) with MFR of 25 g/10 minP1-69: polypropylene (PP) with MFR of 10 g/10 minP1-70: polypropylene (PP) with MFR of 5 g/10 minP1-71: polypropylene (PP) with MFR of 1 g/10 minP1-72: polypropylene (PP) with MFR of 0.1 g/10 minP1-73: styrene-butadiene thermoplastic elastomerP1-74: styrene-ethylene-butylene-styrene block copolymer (SEBS)P1-75: styrene-isoprene-styrene block copolymer (SIS)P1-76: polyurethane (PU) with weight average molecular weight of 1000P1-77: polyurethane (PU) with weight average molecular weight of 2000P1-78: polyurethane (PU) with weight average molecular weight of 5000P1-79: nylon 6 (Ny6) with number average molecular weight of 5000P1-80: nylon 6 (Ny6) with number average molecular weight of 10000P1-81: nylon 6 (Ny6) with number average molecular weight ofP1-82: nylon 6 (Ny6) with number average molecular weight of 100000P1-83: nylon 610 (Ny610)P1-84: nylon 612 (Ny612)P1-85: nylon 11 (Ny11)P1-86: nylon 12 (Ny12)P1-87: nylon MXD6 (NyMXD6)

TABLE 9-1
thermoplastic polymer composition
	thermoplastic	stabilizer composition
	Example	polymer	kind	amount (part)
	1-124	P1-1	Ex. 1-1	0.41
	1-125	P1-2	Ex. 1-1	0.41
	1-126	P1-3	Ex. 1-1	0.41
	1-127	P1-3	Ex. 1-2	0.45
	1-128	P1-3	Ex. 1-3	0.5
	1-129	P1-3	Ex. 1-4	0.6
	1-130	P1-3	Ex. 1-19	0.31
	1-131	P1-3	Ex. 1-20	0.51
	1-132	P1-3	Ex. 1-21	0.51
	1-133	P1-3	Ex. 1-22	0.71
	1-134	P1-4	Ex. 1-1	0.41
	1-135	P1-4	Ex. 1-2	0.45
	1-136	P1-4	Ex. 1-3	0.5
	1-137	P1-4	Ex. 1-4	0.6
	1-138	P1-4	Ex. 1-19	0.31
	1-139	P1-4	Ex. 1-20	0.51
	1-140	P1-4	Ex. 1-21	0.51
	1-141	P1-4	Ex. 1-22	0.71
	1-142	P1-5	Ex. 1-1	0.41
	1-143	P1-6	Ex. 1-1	0.41
	1-144	P1-7	Ex. 1-1	0.41
	1-145	P1-7	Ex. 1-2	0.45
	1-146	P1-7	Ex. 1-3	0.5
	1-147	P1-7	Ex. 1-4	0.6
	1-148	P1-7	Ex. 1-19	0.31
	1-149	P1-7	Ex. 1-20	0.51
	1-150	P1-7	Ex. 1-21	0.51
	1-151	P1-7	Ex. 1-22	0.71
	1-152	P1-8	Ex. 1-1	0.41
	1-153	P1-9	Ex. 1-1	0.41
	1-154	P1-10	Ex. 1-1	0.41
	1-155	P1-11	Ex. 1-1	0.41
	1-156	P1-11	Ex. 1-2	0.45

TABLE 9-2
thermoplastic polymer composition
		thermoplastic	stabilizer composition
	Example	polymer	kind	amount (part)
	1-157	P1-11	Ex. 1-3	0.5
	1-158	P1-11	Ex. 1-4	0.6
	1-159	P1-11	Ex. 1-19	0.31
	1-160	P1-11	Ex. 1-20	0.51
	1-161	P1-11	Ex. 1-21	0.51
	1-162	P1-11	Ex. 1-22	0.71
	1-163	P1-12	Ex. 1-1	0.41
	1-164	P1-13	Ex. 1-1	0.41
	1-165	P1-13	Ex. 1-2	0.45
	1-166	P1-13	Ex. 1-3	0.5
	1-167	P1-13	Ex. 1-4	0.6
	1-168	P1-13	Ex. 1-19	0.31
	1-169	P1-13	Ex. 1-20	0.51
	1-170	P1-13	Ex. 1-21	0.51
	1-171	P1-13	Ex. 1-22	0.71
	1-172	P1-14	Ex. 1-1	0.41
	1-173	P1-15	Ex. 1-1	0.41
	1-174	P1-16	Ex. 1-1	0.41
	1-175	P1-17	Ex. 1-1	0.41
	1-176	P1-17	Ex. 1-2	0.45
	1-177	P1-17	Ex. 1-3	0.5
	1-178	P1-17	Ex. 1-4	0.6
	1-179	P1-17	Ex. 1-19	0.31
	1-180	P1-17	Ex. 1-20	0.51
	1-181	P1-17	Ex. 1-21	0.51
	1-182	P1-17	Ex. 1-22	0.71
	1-183	P1-18	Ex. 1-1	0.41
	1-184	P1-19	Ex. 1-1	0.41
	1-185	P1-20	Ex. 1-1	0.41
	1-186	P1-21	Ex. 1-1	0.41
	1-187	P1-22	Ex. 1-1	0.41
	1-188	P1-23	Ex. 1-1	0.41
	1-189	P1-24	Ex. 1-1	0.41

TABLE 9-3
thermoplastic polymer composition
		thermoplastic	stabilizer composition
	Example	polymer	kind	amount (part)
	1-190	P1-25	Ex. 1-1	0.41
	1-191	P1-26	Ex. 1-1	0.41
	1-192	P1-27	Ex. 1-1	0.41
	1-192	P1-28	Ex. 1-1	0.41
	1-193	P1-29	Ex. 1-1	0.41
	1-194	P1-30	Ex. 1-1	0.41
	1-195	P1-31	Ex. 1-1	0.41
	1-196	P1-32	Ex. 1-1	0.41
	1-197	P1-33	Ex. 1-1	0.41
	1-198	P1-34	Ex. 1-1	0.41
	1-199	P1-35	Ex. 1-1	0.41
	1-200	P1-36	Ex. 1-1	0.41
	1-201	P1-37	Ex. 1-1	0.41
	1-202	P1-38	Ex. 1-1	0.41
	1-203	P1-39	Ex. 1-1	0.41
	1-204	P1-40	Ex. 1-1	0.41
	1-205	P1-41	Ex. 1-1	0.41
	1-206	P1-42	Ex. 1-1	0.41
	1-207	P1-43	Ex. 1-1	0.41
	1-208	P1-44	Ex. 1-1	0.41
	1-209	P1-45	Ex. 1-1	0.41
	1-210	P1-46	Ex. 1-1	0.41
	1-211	P1-47	Ex. 1-1	0.41
	1-212	P1-48	Ex. 1-1	0.41
	1-213	P1-49	Ex. 1-1	0.41
	1-214	P1-50	Ex. 1-1	0.41
	1-215	P1-51	Ex. 1-1	0.41
	1-216	P1-52	Ex. 1-1	0.41
	1-217	P1-53	Ex. 1-1	0.41
	1-218	P1-54	Ex. 1-1	0.41
	1-219	P1-55	Ex. 1-1	0.41
	1-220	P1-56	Ex. 1-1	0.41
	1-221	P1-57	Ex. 1-1	0.41
	1-222	P1-58	Ex. 1-1	0.41

TABLE 9-4
thermoplastic polymer composition
		thermoplastic	stabilizer composition
	Example	polymer	kind	amount (part)
	1-223	P1-59	Ex. 1-1	0.41
	1-225	P1-60	Ex. 1-1	0.41
	1-226	P1-61	Ex. 1-1	0.41
	1-227	P1-62	Ex. 1-1	0.41
	1-228	P1-63	Ex. 1-1	0.41
	1-229	P1-64	Ex. 1-1	0.41
	1-230	P1-65	Ex. 1-1	0.41
	1-231	P1-66	Ex. 1-1	0.41
	1-232	P1-67	Ex. 1-1	0.41
	1-233	P1-68	Ex. 1-1	0.41
	1-234	P1-69	Ex. 1-1	0.41
	1-235	P1-70	Ex. 1-1	0.41
	1-236	P1-71	Ex. 1-1	0.41
	1-237	P1-70	Ex. 1-1	0.41
	1-238	P1-72	Ex. 1-1	0.41
	1-239	P1-73	Ex. 1-1	0.41
	1-240	P1-74	Ex. 1-1	0.41
	1-241	P1-75	Ex. 1-1	0.41
	1-242	P1-76	Ex. 1-1	0.41
	1-243	P1-77	Ex. 1-1	0.41
	1-244	P1-78	Ex. 1-1	0.41
	1-245	P1-79	Ex. 1-1	0.41
	1-246	P1-80	Ex. 1-1	0.41
	1-247	P1-81	Ex. 1-1	0.41
	1-248	P1-82	Ex. 1-1	0.41
	1-249	P1-83	Ex. 1-1	0.41
	1-250	P1-84	Ex. 1-1	0.41
	1-251	P1-85	Ex. 1-1	0.41
	1-252	P1-86	Ex. 1-1	0.41
	1-253	P1-87	Ex. 1-1	0.41

Example 2-1

Production of Stabilizer Composition

Compound (8-1) (0.2 part) and trehalose (0.05 part) were mixed to produce a stabilizer composition.

Example 2-2

Production of Stabilizer Composition

Compound (8-1) (0.1 part) and trehalose (0.01 part) were mixed to produce a stabilizer composition.

Example 2-3

Production of Thermoplastic Polymer Composition

An ethylene-vinyl alcohol copolymer (manufactured by KURARAY CO., LTD., 100 parts) and the total amount of the stabilizer composition obtained in Example 2-1 were dry-blended, the obtained mixture was knead-extruded by a single screw extruder having a screw diameter of 30 mm (“VS30-28 type extruder” manufactured by TANABE PLASTICS MACHINERY CO., LTD.) at temperature 230° C. and screw rotation 50 rpm to give strands, and the strands were cut by a pelletizer to give a thermoplastic polymer composition as pellets.

Example 2-4

Production of Thermoplastic Polymer Composition

In the same manner as in Example 2-3 except that the stabilizer composition obtained in Example 2-2 was used instead of the stabilizer composition obtained in Example 2-1, a thermoplastic polymer composition was obtained as pellets.

Comparative Example 2-1

In the same manner as in Example 2-3 except that compound (8-1) (0.1 part) was used instead of the stabilizer composition obtained in Example 2-1, a thermoplastic polymer composition was obtained as pellets.

Experimental Example 2-1

Evaluation of Processing Stability

For evaluation of the processing stability during operation of extrusion processing, Dwell MFR tests were performed using the pellets of each thermoplastic polymer compositions obtained in Example 2-34 and Comparative Example 2-1. The test was based on JIS K 7210, and 0 min Dwell MFR (g/10 min) and 30 min Dwell MFR (g/10 min) were measured by a melt indexer (L217-E14011 manufactured by Technol Seven Co., Ltd.) under the conditions of temperature in a cylinder 270° C. and load 2.16 kg. The 0 min Dwell MFR was measured after 5 min preheating time after filling pellets of the thermoplastic polymer composition in the cylinder. The 30 min Dwell MFR was measured after 30 min dwell time, including the preheating time, of the pellets of the thermoplastic polymer composition in the cylinder. The MFR variation rate was calculated by the following formula and using the thus-measured 0 min Dwell MFR and 30 min Dwell MFR:

MFR variation rate (%)=absolute value of (30 min Dwell MFR−0 min Dwell MFR)×100/(0 min Dwell MFR)

A smaller MFR variation rate means better processing stability of the thermoplastic polymer composition.

The compositions of the stabilizer compositions of Example 2-1 and Example 2-2 are shown in Table 10, and the compositions, 0 min Dwell MFRs, 30 min Dwell MFRs and MFR variation rates of the thermoplastic polymer compositions of Example 2-3, Example 2-4 and Comparative Example 2-1 are shown in Table 11.

TABLE 10
stabilizer composition
	compound	trehalose	mass ratio of
	(8-1) (part)	(part)	compound (8-1):trehalose
Ex. 2-1	0.2	0.05	8:2
Ex. 2-2	0.1	0.01	91:9

TABLE 11
thermoplastic polymer composition
	stabilizer	0 min	30 min	MFR
	composition	Dwell	Dwell	varia-
	EVOH		amount	MFR	MFR	tion
	(part)	kind	(part)	(g/10 min)	(g/10 min)	rate (%)
Ex.	100	Ex.	0.25	13.7	15.9	16.1
2-3		2-1
Ex.	100	Ex.	0.11	13.5	13.1	3.0
2-4		2-2
Comp.	100	compound	0.1	14.3	9.4	34.3
Ex.		(8-1)
2-1
EVOH: ethylene-vinyl alcohol copolymer

Example 2-5-Example 2-91

Production of Stabilizer Composition

Stabilizer compositions are obtained by mixing the components described in Table 12-1-Table 12-3. Thermoplastic polymer compositions containing these stabilizer compositions are predicted to be superior in processing stability.

TABLE 12-1
stabilizer composition
	compound		compound	compounds
	(8-1)	trehalose	(2)	(3)-(7)
	amount	amount		amount		amount
Example	(part)	(part)	kind	(part)	kind	(part)
2-5	0.01	0.2	—	—	—	—
2-6	0.05	0.15	—	—	—	—
2-7	0.1	0.1	—	—	—	—
2-8	0.15	0.05	—	—	—	—
2-9	0.2	0.01	—	—	—	—
2-10	0.2	0.005	—	—	—	—
2-11	0.2	0.001	—	—	—	—
2-12	0.2	0.0005	—	—	—	—
2-13	0.2	0.0002	—	—	—	—
2-14	0.01	0.2	(2-1)	0.2	—	—
2-15	0.1	0.1	(2-1)	0.2	—	—
2-16	0.2	0.01	(2-1)	0.2	—	—
2-17	0.2	0.005	(2-1)	0.2	—	—
2-18	0.2	0.001	(2-1)	0.2	—	—
2-19	0.2	0.0005	(2-1)	0.2	—	—
2-20	0.01	0.2	(2-2)	0.2	—	—
2-21	0.1	0.1	(2-2)	0.2	—	—
2-22	0.2	0.01	(2-2)	0.2	—	—
2-23	0.2	0.005	(2-2)	0.2	—	—
2-24	0.2	0.001	(2-2)	0.2	—	—
2-25	0.2	0.0005	(2-2)	0.2	—	—
2-26	0.01	0.2	(2-3)	0.2	—	—
2-27	0.1	0.1	(2-3)	0.2	—	—
2-28	0.2	0.01	(2-3)	0.2	—	—
2-29	0.2	0.005	(2-3)	0.2	—	—
2-30	0.2	0.001	(2-3)	0.2	—	—
2-31	0.2	0.0005	(2-3)	0.2	—	—
2-32	0.01	0.2	—	—	(3-1)	0.2
2-33	0.1	0.1	—	—	(3-1)	0.2
2-34	0.2	0.01	—	—	(3-1)	0.2
2-35	0.2	0.005	—	—	(3-1)	0.2

TABLE 12-2
stabilizer composition
	compound		compound	compounds
	(8-1)	trehalose	(2)	(3)-(7)
	amount	amount		amount		amount
Example	(part)	(part)	kind	(part)	kind	(part)
2-36	0.2	0.001	—	—	(3-1)	0.2
2-37	0.2	0.0005	—	—	(3-1)	0.2
2-38	0.01	0.2	—	—	(4-1)	0.2
2-39	0.1	0.1	—	—	(4-1)	0.2
2-40	0.2	0.01	—	—	(4-1)	0.2
2-41	0.2	0.005	—	—	(4-1)	0.2
2-42	0.2	0.001	—	—	(4-1)	0.2
2-43	0.2	0.0005	—	—	(4-1)	0.2
2-44	0.01	0.2	—	—	(5-1)	0.2
2-45	0.1	0.1	—	—	(5-1)	0.2
2-46	0.2	0.01	—	—	(5-1)	0.2
2-47	0.2	0.005	—	—	(5-1)	0.2
2-48	0.2	0.001	—	—	(5-1)	0.2
2-49	0.2	0.0005	—	—	(5-1)	0.2
2-50	0.01	0.2	—	—	(5-2)	0.2
2-51	0.1	0.1	—	—	(5-2)	0.2
2-52	0.2	0.01	—	—	(5-2)	0.2
2-53	0.2	0.005	—	—	(5-2)	0.2
2-54	0.2	0.001	—	—	(5-2)	0.2
2-55	0.2	0.0005	—	—	(5-2)	0.2
2-56	0.01	0.2	—	—	(5-3)	0.2
2-57	0.1	0.1	—	—	(5-3)	0.2
2-58	0.2	0.01	—	—	(5-3)	0.2
2-59	0.2	0.005	—	—	(5-3)	0.2
2-60	0.2	0.001	—	—	(5-3)	0.2
2-61	0.2	0.0005	—	—	(5-3)	0.2
2-62	0.01	0.2	—	—	(6-1)	0.2

TABLE 12-3
stabilizer composition
	compound		compound	compounds
	(8-1)	trehalose	(2)	(3)-(7)
	amount	amount		amount		amount
Example	(part)	(part)	kind	(part)	kind	(part)
2-63	0.1	0.1	—	—	(6-1)	0.2
2-64	0.2	0.01	—	—	(6-1)	0.2
2-65	0.2	0.005	—	—	(6-1)	0.2
2-66	0.2	0.001	—	—	(6-1)	0.2
2-67	0.2	0.0005	—	—	(6-1)	0.2
2-68	0.01	0.2	—	—	(7-1)	0.2
2-69	0.1	0.1	—	—	(7-1)	0.2
2-70	0.2	0.01	—	—	(7-1)	0.2
2-71	0.2	0.005	—	—	(7-1)	0.2
2-72	0.2	0.001	—	—	(7-1)	0.2
2-73	0.2	0.0005	—	—	(7-1)	0.2
2-74	0.01	0.2	(2-1)	0.2	(3-1)	0.2
2-75	0.1	0.1	(2-1)	0.2	(3-1)	0.2
2-76	0.2	0.01	(2-1)	0.2	(3-1)	0.2
2-77	0.2	0.005	(2-1)	0.2	(3-1)	0.2
2-78	0.2	0.001	(2-1)	0.2	(3-1)	0.2
2-79	0.2	0.0005	(2-1)	0.2	(3-1)	0.2
2-80	0.01	0.2	(2-2)	0.2	(3-1)	0.2
2-81	0.1	0.1	(2-2)	0.2	(3-1)	0.2
2-82	0.2	0.01	(2-2)	0.2	(3-1)	0.2
2-83	0.2	0.005	(2-2)	0.2	(3-1)	0.2
2-84	0.2	0.001	(2-2)	0.2	(3-1)	0.2
2-85	0.2	0.0005	(2-2)	0.2	(3-1)	0.2
2-86	0.01	0.2	(2-3)	0.2	(3-1)	0.2
2-87	0.1	0.1	(2-3)	0.2	(3-1)	0.2
2-88	0.2	0.01	(2-3)	0.2	(3-1)	0.2
2-89	0.2	0.005	(2-3)	0.2	(3-1)	0.2
2-90	0.2	0.001	(2-3)	0.2	(3-1)	0.2
2-91	0.2	0.0005	(2-3)	0.2	(3-1)	0.2

Example 2-92-Example 2-208

Production of Thermoplastic Polymer Composition

In the same manner as in Example 2-2 except that the thermoplastic polymers (100 parts) described in Table 13-1-Table 13-4, and the stabilizer composition in the kinds and amounts described in Table 13-1-Table 13-4 are used, thermoplastic polymer compositions are obtained as pellets. The obtained thermoplastic polymer compositions are predicted to be superior in processing stability.

The meanings of the abbreviations of the thermoplastic polymers described in Table 13-1-Table 13-4 are as follows. The MFR described below is the 0 min Dwell MFR of the thermoplastic polymer as measured under the conditions of Experimental Example 2-1.

P2-1: high density polyethylene (HDPE) (excluding P2-45-P2-50)P2-2: low density polyethylene (LDPE) (excluding P2-51-P2-57)P2-3: linear low density polyethylene (LLDPE) (excluding P2-58-P2-64)P2-4: ethylene-ethyl acrylate copolymer (EEA)P2-5: ethylene-vinyl acetate copolymer (EVA)P2-6: polypropylene (PP) (excluding P2-65-P2-71)P2-7: propylene-ethylene random copolymerP2-8: propylene-α-olefin random copolymerP2-9: propylene-ethylene-α-olefin copolymerP2-10: polystyrene (PS)P2-11: acrylonitrile-styrene copolymer (SAN)P2-12: acrylonitrile-butadiene-styrene copolymer (ABS)P2-13: special acrylic rubber-acrylonitrile-styrene copolymerP2-14: acrylonitrile-chlorinated polyethylene-styrene copolymer (ACS)P2-15: polybutadiene rubber (BR)P2-16: styrene-butadiene copolymer (SB)P2-17: styrene-butadiene block copolymer (SBS)P2-18: chlorinated polyethylene (CPE)P2-19: polychloropreneP2-20: chlorinated rubberP2-21: poly(vinyl chloride) (PVC)P2-22: poly(vinylidene chloride) (PVDC)P2-23: methacrylate resinP2-24: fluororesinP2-25: polyacetal (POM)P2-26: grafted poly(phenylene ether) resinP2-27: poly(phenylene sulfide) resin (PPS)P2-28: polyurethane (PU) (excluding P2-75-P2-77)P2-29: polyamide (PA) (excluding P2-78-P2-86)P2-30: poly(ethylene terephthalate) (PET)P2-31: poly(butylene terephthalate) (PBT)P2-32: poly(lactic acid) (PLA)P2-33: polycarbonate (PC)P2-34: polyacrylateP2-35: polysulfone (PPSU)P2-36: poly(ether ether ketone) (PEEK)P2-37: poly(ether sulfone) (PES)P2-38: aromatic polyesterP2-39: diallyl phthalate prepolymerP2-40: silicone resin (SI)P2-41: 1,2-polybutadieneP2-42: polyisopreneP2-43: butadiene-acrylonitrile copolymer (NBR)P2-44: ethylene-methyl methacrylate copolymer (EMMA)P2-45: high density polyethylene (HDPE) with MFR of 40 g/10 minP2-46: high density polyethylene (HDPE) with MFR of 20 g/10 minP2-47: high density polyethylene (HDPE) with MFR of 10 g/10 minP2-48: high density polyethylene (HDPE) with MFR of 5 g/10 minP2-49: high density polyethylene (HDPE) with MFR of 1 g/10 minP2-50: high density polyethylene (HDPE) with MFR of 0.1 g/10 minP2-51: low density polyethylene (LDPE) with MFR of 75 g/10 minP2-52: low density polyethylene (LDPE) with MFR of 50 g/10 minP2-53: low density polyethylene (LDPE) with MFR of 25 g/10 minP2-54: low density polyethylene (LDPE) with MFR of 10 g/10 minP2-55: low density polyethylene (LDPE) with MFR of 5 g/10 minP2-56: low density polyethylene (LDPE) with MFR of 2 g/10 minP2-57: low density polyethylene (LDPE) with MFR of 1 g/10 minP2-58: low density polyethylene (LDPE) with MFR of 0.1 g/10 minP2-59: linear low density polyethylene (LLDPE) with MFR of 100 g/10 minP2-60: linear low density polyethylene (LLDPE) with MFR of 50 g/10 minP2-61: linear low density polyethylene (LLDPE) with MFR of 25 g/10 minP2-62: linear low density polyethylene (LLDPE) with MFR of 10 g/10 minP2-63: linear low density polyethylene (LLDPE) with MFR of 5 g/10 minP2-64: linear low density polyethylene (LLDPE) with MFR of 1 g/10 minP2-65: linear low density polyethylene (LLDPE) with MFR of 0.1 g/10 minP2-66: polypropylene (PP) with MFR of 100 g/10 minP2-67: polypropylene (PP) with MFR of 50 g/10 minP2-68: polypropylene (PP) with MFR of 25 g/10 minP2-69: polypropylene (PP) with MFR of 10 g/10 minP2-70: polypropylene (PP) with MFR of 5 g/10 minP2-71: polypropylene (PP) with MFR of 1 g/10 minP2-72: polypropylene (PP) with MFR of 0.1 g/10 minP2-73: styrene-butadiene thermoplastic elastomerP2-74: styrene-ethylene-butylene-styrene block copolymer (SEBS)P2-75: styrene-isoprene-styrene block copolymer (SIS)P2-76: polyurethane (PU) with weight average molecular weight of 1000P2-77: polyurethane (PU) with weight average molecular weight of 2000P2-78: polyurethane (PU) with weight average molecular weight of 5000P2-79: nylon 6 (Ny6) with number average molecular weight of 5000P2-80: nylon 6 (Ny6) with number average molecular weight of 10000P2-81: nylon 6 (Ny6) with number average molecular weight of 50000P2-82: nylon 6 (Ny6) with number average molecular weight of 100000P2-83: nylon 610 (Ny610)P2-84: nylon 612 (Ny612)P2-85: nylon 11 (Ny11)P2-86: nylon 12 (Ny12)P2-87: nylon MXD6 (NyMXD6)

TABLE 13-1
thermoplastic polymer composition
	thermoplastic	stabilizer composition
	Example	polymer	kind	amount (part)
	2-92	P2-1	Ex. 2-1	0.25
	2-93	P2-2	Ex. 2-1	0.25
	2-94	P2-3	Ex. 2-1	0.25
	2-95	P2-3	Ex. 2-2	0.11
	2-96	P2-3	Ex. 2-13	0.2002
	2-97	P2-3	Ex. 2-16	0.41
	2-98	P2-3	Ex. 2-34	0.41
	2-99	P2-3	Ex. 2-76	0.61
	2-100	P2-4	Ex. 2-1	0.25
	2-101	P2-5	Ex. 2-1	0.25
	2-102	P2-6	Ex. 2-1	0.25
	2-103	P2-6	Ex. 2-2	0.11
	2-104	P2-6	Ex. 2-13	0.2002
	2-105	P2-6	Ex. 2-16	0.41
	2-106	P2-6	Ex. 2-34	0.41
	2-107	P2-6	Ex. 2-76	0.61
	2-108	P2-7	Ex. 2-1	0.25
	2-109	P2-8	Ex. 2-1	0.25
	2-110	P2-9	Ex. 2-1	0.25
	2-111	P2-10	Ex. 2-1	0.25
	2-112	P2-10	Ex. 2-2	0.11
	2-113	P2-10	Ex. 2-13	0.2002
	2-114	P2-10	Ex. 2-16	0.41
	2-115	P2-10	Ex. 2-34	0.41
	2-116	P2-10	Ex. 2-76	0.61
	2-117	P2-11	Ex. 2-1	0.25
	2-118	P2-12	Ex. 2-1	0.25
	2-119	P2-12	Ex. 2-2	0.11
	2-120	P2-12	Ex. 2-13	0.2002

TABLE 13-2
thermoplastic polymer composition
		thermoplastic	stabilizer composition
	Example	polymer	kind	amount (part)
	2-121	P2-12	Ex. 2-16	0.41
	2-122	P2-12	Ex. 2-34	0.41
	2-123	P2-12	Ex. 2-76	0.61
	2-124	P-13	Ex. 2-1	0.25
	2-125	P2-14	Ex. 2-1	0.25
	2-126	P2-15	Ex. 2-1	0.25
	2-127	P2-16	Ex. 2-1	0.25
	2-128	P2-16	Ex. 2-2	0.11
	2-129	P2-16	Ex. 2-13	0.2002
	2-130	P2-16	Ex. 2-16	0.41
	2-131	P2-16	Ex. 2-34	0.41
	2-132	P2-16	Ex. 2-76	0.61
	2-133	P2-17	Ex. 2-1	0.11
	2-134	P2-17	Ex. 2-2	0.11
	2-135	P2-17	Ex. 2-13	0.2002
	2-136	P2-17	Ex. 2-16	0.41
	2-137	P2-17	Ex. 2-34	0.41
	2-138	P2-17	Ex. 2-76	0.61
	2-139	P2-18	Ex. 2-1	0.25
	2-140	P2-19	Ex. 2-1	0.25
	2-141	P2-20	Ex. 2-1	0.25
	2-142	P2-21	Ex. 2-1	0.25
	2-143	P2-22	Ex. 2-1	0.25
	2-144	P2-23	Ex. 2-1	0.25
	2-145	P2-24	Ex. 2-1	0.25
	2-146	P2-25	Ex. 2-1	0.25
	2-147	P2-26	Ex. 2-1	0.25
	2-148	P2-27	Ex. 2-1	0.25
	2-149	P2-28	Ex. 2-1	0.25

TABLE 13-3
thermoplastic polymer composition
		thermoplastic	stabilizer composition
	Example	polymer	kind	amount (part)
	2-150	P2-29	Ex. 2-1	0.25
	2-151	P2-30	Ex. 2-1	0.25
	2-152	P2-31	Ex. 2-1	0.25
	2-153	P2-32	Ex. 2-1	0.25
	2-154	P2-33	Ex. 2-1	0.25
	2-155	P2-34	Ex. 2-1	0.25
	2-156	P2-35	Ex. 2-1	0.25
	2-157	P2-36	Ex. 2-1	0.25
	2-158	P2-37	Ex. 2-1	0.25
	2-159	P2-38	Ex. 2-1	0.25
	2-160	P2-39	Ex. 2-1	0.25
	2-161	P2-40	Ex. 2-1	0.25
	2-162	P2-41	Ex. 2-1	0.25
	2-163	P2-42	Ex. 2-1	0.25
	2-164	P2-43	Ex. 2-1	0.25
	2-165	P2-44	Ex. 2-1	0.25
	2-166	P2-45	Ex. 2-1	0.11
	2-167	P2-46	Ex. 2-1	0.11
	2-168	P2-47	Ex. 2-1	0.11
	2-169	P2-48	Ex. 2-1	0.11
	2-170	P2-49	Ex. 2-1	0.11
	2-171	P2-50	Ex. 2-1	0.11
	2-172	P2-51	Ex. 2-1	0.11
	2-173	P2-52	Ex. 2-1	0.11
	2-174	P2-53	Ex. 2-1	0.11
	2-175	P2-54	Ex. 2-1	0.11
	2-176	P2-55	Ex. 2-1	0.11
	2-177	P2-56	Ex. 2-1	0.11
	2-178	P2-57	Ex. 2-1	0.11

TABLE 13-4
thermoplastic polymer composition
		thermoplastic	stabilizer composition
	Example	polymer	kind	amount (part)
	2-179	P2-58	Ex. 2-1	0.11
	2-180	P2-59	Ex. 2-1	0.11
	2-181	P2-60	Ex. 2-1	0.11
	2-182	P2-61	Ex. 2-1	0.11
	2-183	P2-62	Ex. 2-1	0.11
	2-184	P2-63	Ex. 2-1	0.11
	2-185	P2-64	Ex. 2-1	0.11
	2-186	P2-65	Ex. 2-1	0.11
	2-187	P2-66	Ex. 2-1	0.11
	2-188	P2-67	Ex. 2-1	0.11
	2-189	P2-68	Ex. 2-1	0.11
	2-190	P2-69	Ex. 2-1	0.11
	2-191	P2-70	Ex. 2-1	0.11
	2-192	P2-71	Ex. 2-1	0.11
	2-193	P2-72	Ex. 2-1	0.11
	2-194	P2-73	Ex. 2-1	0.11
	2-195	P2-74	Ex. 2-1	0.11
	2-196	P2-75	Ex. 2-1	0.11
	2-197	P2-76	Ex. 2-1	0.11
	2-198	P2-77	Ex. 2-1	0.11
	2-199	P2-78	Ex. 2-1	0.11
	2-200	P2-79	Ex. 2-1	0.11
	2-201	P2-80	Ex. 2-1	0.11
	2-202	P2-81	Ex. 2-1	0.11
	2-203	P2-82	Ex. 2-1	0.11
	2-204	P2-83	Ex. 2-1	0.11
	2-205	P2-84	Ex. 2-1	0.11
	2-206	P2-85	Ex. 2-1	0.11
	2-207	P2-86	Ex. 2-1	0.11
	2-208	P2-87	Ex. 2-1	0.11

Example 3-1

Production of Stabilizer Composition)

Compound (2-1) (0.2 part), trehalose (0.01 part) and compound (1-1) (0.3 part) were mixed to produce a stabilizer composition.

Reference Example 3-1

Compound (2-1) (0.2 part) and compound (1-1) (0.3 part) were mixed to produce a stabilizer composition.

Example 3-2

Production of Thermoplastic Polymer Composition)

A styrene-butadiene block copolymer (manufactured by Asahi Kasei Corp., 100 parts) and the stabilizer composition (0.51 part) obtained in Example 3-1 were dry-blended, the obtained mixture was knead-extruded by a single screw extruder having a screw diameter of 30 mm (“VS30-28 type extruder” manufactured by TANABE PLASTICS MACHINERY CO., LTD.) at temperature 230° C. and screw rotation 50 rpm to give strands, and the strands were cut by a pelletizer to give a thermoplastic polymer composition as pellets.

Reference Example 3-2

In the same manner as in Example 3-2 except that the composition (0.5 part) obtained in Reference Example 3-1 was used instead of the stabilizer composition obtained in Example 3-1, a thermoplastic polymer composition was obtained as pellets.

Experimental Example 3-1

Evaluation of Processing Stability)

For evaluation of the processing stability during operation of extrusion processing, Dwell MFR tests were performed using the pellets of each thermoplastic polymer composition obtained in Example 3-2 and Reference Example 3-2. The test was based on JIS K 7210, and 0 min Dwell MFR (g/10 min) and 30 min Dwell MFR (g/10 min) were measured by a melt indexer (L217-E14011 manufactured by Technol Seven Co., Ltd.) under the conditions of temperature in a cylinder 270° C. and load 2.16 kg. The 0 min Dwell MFR was measured after 5 min preheating time after filling pellets of thermoplastic polymer composition in the cylinder. The 30 min Dwell MFR was measured after 30 min dwell time, including the preheating time, of the pellets of the thermoplastic polymer composition in the cylinder. The MFR variation rate was calculated by the following formula and using the thus-measured 0 min Dwell MFR and 30 min Dwell MFR:

MFR variation rate (%)=absolute value of (30 min Dwell MFR−0 min Dwell MFR)×100/(0 min Dwell MFR)

The compositions of the stabilizer compositions of Example 3-1 and Reference Example 3-1 are shown in Table 14, and the compositions, 0 min Dwell MFRs, 30 min Dwell MFRs and MFR variation rates of the thermoplastic polymer compositions of Example 3-2 and Reference Example 3-2 are shown in Table 15. In a thermoplastic polymer composition containing a styrene-butadiene block copolymer, a smaller MFR variation rate means better processing stability thereof.

[Table 14]

TABLE 14
stabilizer composition
	compound (2-1)	trehalose	compound (1-1)
	(part)	(part)	(part)
Ex. 3-1	0.2	0.01	0.3
Ref. Ex. 3-1	0.2	—	0.3

TABLE 15
thermoplastic polymer composition
	stabilizer	0 min	30 min	MFR
	composition	Dwell	Dwell	variation
			amount	MFR	MFR	rate
	SBS (part)	kind	(part)	(g/10 min)	(g/10 min)	(%)
Ex.	100	Ex.	0.51	23.7	14.9	37.1
3-2		3-1
Ref.	100	Ref.	0.5	23.4	10.5	55.3
Ex.		Ex.
3-2		3-1
SBS: styrene-butadiene block copolymer

Example 3-3

Production of Stabilizer Composition

Compound (2-2) (0.1 part) and trehalose (0.1 part) were mixed to produce a stabilizer composition.

Example 3-4

Production of Thermoplastic Polymer Composition

A polypropylene (manufactured by Sumitomo Chemical Company, Limited, 100 parts) and the stabilizer composition (0.2 part) obtained in Example 3-3 were dry-blended, the obtained mixture was knead-extruded by a single screw extruder having a screw diameter of 30 mm (“VS30-28 type extruder” manufactured by TANABE PLASTICS MACHINERY CO., LTD.) at temperature 230° C. and screw rotation 50 rpm to give strands, and the strands were cut by a pelletizer to give a thermoplastic polymer composition as pellets.

Comparative Example 3-1

In the same manner as in Example 3-4 except that compound (2-2) (0.1 part) was used instead of the stabilizer composition obtained in Example 3-3, a thermoplastic polymer composition was obtained as pellets.

Experimental Example 3-2

Evaluation of Processing Stability

For evaluation of the processing stability during operation of extrusion processing, Dwell MFR tests were performed using the pellets of each thermoplastic polymer composition obtained in Example 3-4 and Comparative Example 3-1. The test was based on JIS K 7210, and 30 min Dwell MFR (g/10 min) were measured by a melt indexer (L217-E14011 manufactured by Technol Seven Co., Ltd.) under the conditions of temperature in a cylinder 270° C. and load 2.16 kg. The 30 min Dwell MFR was measured after 30 min dwell time, including the preheating time, of the pellets of the thermoplastic polymer composition in the cylinder.

The composition of the stabilizer composition in Example 3-3 is shown in Table 16, and the compositions and 30 min Dwell MFRs of the thermoplastic polymer compositions of Example 3-4 and Comparative Example 3-1 are shown in Table 17. In a thermoplastic polymer composition containing polypropylene, a smaller 30 min Dwell MFR means better processing stability thereof.

TABLE 16
stabilizer composition
	compound (2-2) (part)	trehalose (part)
Ex. 3-3	0.1	0.1

TABLE 17
thermoplastic polymer composition
	PP	stabilizer composition	30 min Dwell MFR
	(part)	kind	amount (part)	(g/10 min)
Ex.	100	Ex.	0.2	16.5
3-4		3-3
Comp.	100	compound	0.1	22.8
Ex. 3-1		(2-2)
PP: polypropylene

Example 3-5-Example 3-7

Production of Stabilizer Composition

Compound (2-1), trehalose, compound (1-1) and compound (3-1) in the amounts described in Table 18 were mixed to respectively produce stabilizer compositions.

Example 3-8

Production of Thermoplastic Polymer Composition

A styrene-butadiene block copolymer (manufactured by DENKI KAGAKU KOGYO KABUSHIKI KAISHA, 100 parts) and the stabilizer composition (0.21 part) obtained in Example 3-5 were dry-blended, the obtained mixture was knead-extruded by a single screw extruder having a screw diameter of 30 mm (“VS30-28 type extruder” manufactured by TANABE PLASTICS MACHINERY CO., LTD.) at temperature 230° C. and screw rotation 50 rpm to give strands, and the strands were cut by a pelletizer to give a thermoplastic polymer composition as pellets.

Example 3-9

Production of Thermoplastic Polymer Composition

In the same manner as in Example 3-8 except that the stabilizer composition (0.41 part) obtained in Example 3-6 was used instead of the stabilizer composition obtained in Example 3-5, a thermoplastic polymer composition was obtained as pellets.

Example 3-10

Production of Thermoplastic Polymer Composition

In the same manner as in Example 3-8 except that the stabilizer composition (0.71 part) obtained in Example 3-7 was used instead of the stabilizer composition obtained in Example 3-5, a thermoplastic polymer composition was obtained as pellets.

Comparative Example 3-2

In the same manner as in Example 3-8 except that compound (2-1) (0.2 part) was used instead of the stabilizer composition obtained in Example 3-5, a thermoplastic polymer composition was obtained as pellets.

Experimental Example 3-3

Evaluation of Processing Stability

0 min Dwell MFRs (g/10 min) and 30 min Dwell MFRs (g/10 min) were measured using the pellets of each thermoplastic polymer composition obtained in Example 3-8-Example 3-10 and Comparative Example 3-2 and in the same manner as in Experimental Example 3-1, and the MFR variation rates (%) were calculated. These results are shown in Table 19.

TABLE 18
stabilizer composition
	compound		compound	compound
	(2-1)	trehalose	(1-1)	(3-1)
	amount	amount	amount	amount
	(part)	(part)	(part)	(part)
	Ex. 3-5	0.2	0.01	—	—
	Ex. 3-6	0.2	0.01	—	0.2
	Ex. 3-7	0.2	0.01	0.3	0.2

TABLE 19
thermoplastic polymer composition
	stabilizer	0 min	30 min	MFR
	composition	Dwell	Dwell	variation
	SBS		amount	MFR	MFR	rate
	(part)	kind	(part)	(g/10 min)	(g/10 min)	(%)
Ex.	100	Ex.	0.21	16.3	3.0	81.6
3-8		3-5
Ex.	100	Ex.	0.41	20.6	8.9	58.3
3-9		3-6
Ex.	100	Ex.	0.71	23.1	15.4	33.3
3-10		3-7
Comp.	100	compound	0.2	14.7	1.2	91.8
Ex.		(2-1)
3-2
SBS: styrene-butadiene block copolymer

Example 3-11-Example 3-78

Production of Stabilizer Composition

Stabilizer compositions are obtained by mixing the components described in Table 20-1 and Table 20-2. The thermoplastic polymer compositions containing these stabilizer compositions are predicted to be superior in processing stability.

TABLE 20-1
stabilizer composition
			compounds
	compound (2)	trehalose	(1), (3)-(8)
		amount	amount		amount		amount		amount
Example	kind	(part)	(part)	kind	(part)	kind	(part)	kind	(part)
3-11	(2-1)	0.01	0.2	—	—	—	—	—	—
3-12	(2-1)	0.05	0.15	—	—	—	—	—	—
3-13	(2-1)	0.1	0.1	—	—	—	—	—	—
3-14	(2-1)	0.15	0.05	—	—	—	—	—	—
3-15	(2-1)	0.2	0.001	—	—	—	—	—	—
3-16	(2-1)	0.2	0.0002	—	—	—	—	—	—
3-17	(2-2)	0.01	0.2	—	—	—	—	—	—
3-18	(2-2)	0.05	0.15	—	—	—	—	—	—
3-19	(2-2)	0.1	0.1	—	—	—	—	—	—
3-20	(2-2)	0.15	0.05	—	—	—	—	—	—
3-21	(2-2)	0.2	0.01	—	—	—	—	—	—
3-22	(2-2)	0.2	0.001	—	—	—	—	—	—
3-23	(2-2)	0.2	0.0002	—	—	—	—	—	—
3-24	(2-3)	0.01	0.2	—	—	—	—	—	—
3-25	(2-3)	0.05	0.15	—	—	—	—	—	—
3-26	(2-3)	0.1	0.1	—	—	—	—	—	—
3-27	(2-3)	0.15	0.05	—	—	—	—	—	—
3-28	(2-3)	0.2	0.01	—	—	—	—	—	—
3-29	(2-3)	0.2	0.001	—	—	—	—	—	—
3-30	(2-3)	0.2	0.0002	—	—	—	—	—	—
3-31	(2-1)	0.01	0.2	(1-1)	0.2	—	—	—	—
3-32	(2-1)	0.2	0.01	(1-1)	0.2	—	—	—	—
3-33	(2-1)	0.2	0.0002	(1-1)	0.2	—	—	—	—
3-34	(2-2)	0.01	0.2	(1-1)	0.2	—	—	—	—
3-35	(2-2)	0.2	0.01	(1-1)	0.2	—	—	—	—
3-36	(2-2)	0.2	0.0002	(1-1)	0.2	—	—	—	—
3-37	(2-3)	0.01	0.2	(1-1)	0.2	—	—	—	—
3-38	(2-3)	0.2	0.01	(1-1)	0.2	—	—	—	—
3-39	(2-3)	0.2	0.0002	(1-1)	0.2	—	—	—	—
3-40	(2-1)	0.01	0.2	(1-2)	0.2	—	—	—	—
3-41	(2-1)	0.2	0.01	(1-2)	0.2	—	—	—	—
3-42	(2-1)	0.2	0.0002	(1-2)	0.2	—	—	—	—

TABLE 20-2
stabilizer composition
	compound		compounds
	(2)	trehalose	(1), (3)-(8)
		amount	amount		amount		amount		amount
Example	kind	(part)	(part)	kind	(part)	kind	(part)	kind	(part)
3-43	(2-1)	0.2	0.01	(3-1)	0.2	—	—	—	—
3-44	(2-2)	0.2	0.01	(3-1)	0.2	—	—	—	—
3-45	(2-3)	0.2	0.01	(3-1)	0.2	—	—	—	—
3-46	(2-1)	0.2	0.01	(4-1)	0.2	—	—	—	—
3-47	(2-2)	0.2	0.01	(4-1)	0.2	—	—	—	—
3-48	(2-3)	0.2	0.01	(4-1)	0.2	—	—	—	—
3-49	(2-1)	0.2	0.01	(5-1)	0.2	—	—	—	—
3-50	(2-2)	0.2	0.01	(5-1)	0.2	—	—	—	—
3-51	(2-3)	0.2	0.01	(5-1)	0.2	—	—	—	—
3-52	(2-1)	0.2	0.01	(5-2)	0.2	—	—	—	—
3-53	(2-2)	0.2	0.01	(5-2)	0.2	—	—	—	—
3-54	(2-3)	0.2	0.01	(5-2)	0.2	—	—	—	—
3-55	(2-1)	0.2	0.01	(5-3)	0.2	—	—	—	—
3-56	(2-2)	0.2	0.01	(5-3)	0.2	—	—	—	—
3-57	(2-3)	0.2	0.01	(5-3)	0.2	—	—	—	—
3-58	(2-1)	0.2	0.01	(6-1)	0.2	—	—	—	—
3-59	(2-2)	0.2	0.01	(6-1)	0.2	—	—	—	—
3-60	(2-3)	0.2	0.01	(6-1)	0.2	—	—	—	—
3-61	(2-1)	0.2	0.01	(7-1)	0.2	—	—	—	—
3-62	(2-2)	0.2	0.01	(7-1)	0.2	—	—	—	—
3-63	(2-3)	0.2	0.01	(7-1)	0.2	—	—	—	—
3-64	(2-1)	0.2	0.01	(8-1)	0.2	—	—	—	—
3-65	(2-2)	0.2	0.01	(8-1)	0.2	—	—	—	—
3-66	(2-3)	0.2	0.01	(8-1)	0.2	—	—	—	—
3-67	(2-1)	0.2	0.01	(1-1)	0.2	(3-1)	0.2	—	—
3-68	(2-2)	0.2	0.01	(1-1)	0.2	(3-1)	0.2	—	—
3-69	(2-3)	0.2	0.01	(1-1)	0.2	(3-1)	0.2	—	—
3-70	(2-1)	0.2	0.01	(1-1)	0.2	(8-1)	0.2	—	—
3-71	(2-2)	0.2	0.01	(1-1)	0.2	(8-1)	0.2	—	—
3-72	(2-3)	0.2	0.01	(1-1)	0.2	(8-1)	0.2	—	—
3-73	(2-1)	0.2	0.01	(3-1)	0.2	(8-1)	0.2	—	—
3-74	(2-2)	0.2	0.01	(3-1)	0.2	(8-1)	0.2	—	—
3-75	(2-3)	0.2	0.01	(3-1)	0.2	(8-1)	0.2	—	—
3-76	(2-1)	0.2	0.01	(1-1)	0.2	(3-1)	0.2	(8-1)	0.2
3-77	(2-2)	0.2	0.01	(1-1)	0.2	(3-1)	0.2	(8-1)	0.2
3-78	(2-3)	0.2	0.01	(1-1)	0.2	(3-1)	0.2	(8-1)	0.2

Example 3-79-Example 3-134

Production of Thermoplastic Polymer Composition

In the same manner as in Example 3-4 except that the thermoplastic polymers (100 parts) described in Table 21-1 and Table 21-2 and the stabilizer composition in the kinds and amounts described in Table 21-1 and Table 21-2 are used, thermoplastic polymer compositions are obtained as pellets. The obtained thermoplastic polymer compositions are predicted to be superior in processing stability.

The meanings of the abbreviations of the thermoplastic polymers described in Table 21-1 and Table 21-2 are as follows.

P3-1: high density polyethylene (HDPE)P3-2: low density polyethylene (LDPE)P3-3: linear low density polyethylene (LLDPE)P3-4: ethylene-vinyl alcohol copolymer (EVOH)P3-5: ethylene-ethyl acrylate copolymer (EEA)P3-6: ethylene-vinyl acetate copolymer (EVA)P3-7: propylene-ethylene random copolymerP3-8: propylene-α-olefin random copolymerP3-9: propylene-ethylene-α-olefin copolymerP3-10: polystyrene (PS)P3-11: acrylonitrile-styrene copolymer (SAN)P3-12: acrylonitrile-butadiene-styrene copolymer (ABS)P3-13: special acrylic rubber-acrylonitrile-styrene copolymerP3-14: acrylonitrile-chlorinated polyethylene-styrene copolymer (ACS)P3-15: polybutadiene rubber (BR)P3-16: styrene-butadiene copolymer (SB)P3-17: styrene-butadiene block copolymer (SBS)P3-18: chlorinated polyethylene (CPE)P3-19: polychloropreneP3-20: chlorinated rubberP3-21: poly(vinyl chloride) (PVC)P3-22: poly(vinylidene chloride) (PVDC)P3-23: methacrylate resinP3-24: fluororesinP3-25: polyacetal (POM)P3-26: grafted poly(phenylene ether) resinP3-27: poly(phenylene sulfide) resin (PPS)P3-28: polyurethane (PU)P3-29: polyamide (PA)P3-30: poly(ethylene terephthalate) (PET)P3-31: poly(butylene terephthalate) (PBT)P3-32: poly(lactic acid) (PLA)P3-33: polycarbonate (PC)P3-34: polyacrylateP3-35: polysulfone (PPSU)P3-36: poly(ether ether ketone) (PEEK)P3-37: poly(ether sulfone) (PES)P3-38: aromatic polyesterP3-39: diallyl phthalate prepolymerP3-40: silicone resin (SI)P3-41: 1,2-polybutadieneP3-42: polyisopreneP3-43: butadiene-acrylonitrile copolymer (NBR)P3-44: ethylene-methyl methacrylate copolymer (EMMA)

TABLE 21-1
thermoplastic polymer composition
	thermoplastic	stabilizer composition
	Example	polymer	kind	amount (part)
	3-79	P3-1	Ex. 3-5	0.21
	3-80	P3-2	Ex. 3-5	0.21
	3-81	P3-3	Ex. 3-5	0.21
	3-82	P3-3	Ex. 3-1	0.51
	3-83	P3-3	Ex. 3-6	0.41
	3-84	P3-3	Ex. 3-7	0.71
	3-85	P3-4	Ex. 3-5	0.21
	3-86	P3-4	Ex. 3-1	0.51
	3-87	P3-4	Ex. 3-6	0.41
	3-88	P3-4	Ex. 3-7	0.71
	3-89	P3-5	Ex. 3-5	0.21
	3-90	P3-6	Ex. 3-5	0.21
	3-91	P3-7	Ex. 3-5	0.21
	3-92	P3-8	Ex. 3-5	0.21
	3-93	P3-9	Ex. 3-5	0.21
	3-94	P3-10	Ex. 3-5	0.21
	3-95	P3-10	Ex. 3-1	0.51
	3-96	P3-10	Ex. 3-6	0.41
	3-97	P3-10	Ex. 3-7	0.71
	3-98	P3-11	Ex. 3-5	0.21
	3-99	P3-12	Ex. 3-5	0.21
	3-100	P3-12	Ex. 3-1	0.51
	3-101	P3-12	Ex. 3-6	0.41
	3-102	P3-12	Ex. 3-7	0.71

TABLE 21-2
thermoplastic polymer composition
		thermoplastic	stabilizer composition
	Example	polymer	kind	amount (part)
	3-103	P3-13	Ex. 3-5	0.21
	3-104	P3-14	Ex. 3-5	0.21
	3-105	P3-15	Ex. 3-5	0.21
	3-106	P3-16	Ex. 3-5	0.21
	3-107	P3-17	Ex. 3-5	0.21
	3-108	P3-18	Ex. 3-5	0.21
	3-109	P3-19	Ex. 3-5	0.21
	3-110	P3-20	Ex. 3-5	0.21
	3-111	P3-21	Ex. 3-5	0.21
	3-112	P3-22	Ex. 3-5	0.21
	3-113	P3-23	Ex. 3-5	0.21
	3-114	P3-24	Ex. 3-5	0.21
	3-115	P3-25	Ex. 3-5	0.21
	3-116	P3-26	Ex. 3-5	0.21
	3-117	P3-27	Ex. 3-5	0.21
	3-118	P3-28	Ex. 3-5	0.21
	3-119	P3-29	Ex. 3-5	0.21
	3-120	P3-30	Ex. 3-5	0.21
	3-121	P3-31	Ex. 3-5	0.21
	3-122	P3-32	Ex. 3-5	0.21
	3-123	P3-33	Ex. 3-5	0.21
	3-124	P3-34	Ex. 3-5	0.21
	3-125	P3-35	Ex. 3-5	0.21
	3-126	P3-36	Ex. 3-5	0.21
	3-127	P3-37	Ex. 3-5	0.21
	3-128	P3-38	Ex. 3-5	0.21
	3-129	P3-39	Ex. 3-5	0.21
	3-130	P3-40	Ex. 3-5	0.21
	3-131	P3-41	Ex. 3-5	0.21
	3-132	P3-42	Ex. 3-5	0.21
	3-133	P3-43	Ex. 3-5	0.21
	3-134	P3-44	Ex. 3-5	0.21

Example 4-1

Production of Stabilizer Composition

Compound (3-1) (0.1 part) and trehalose (0.01 part) were mixed to produce a stabilizer composition.

Example 4-2

Production of Thermoplastic Polymer Composition

Polypropylene (manufactured by Sumitomo Chemical Company, Limited, 100 parts) and the stabilizer composition obtained in Example 4-1 were dry-blended, the obtained mixture was knead-extruded by a single screw extruder having a screw diameter of 30 mm (“VS30-28 type extruder” manufactured by TANABE PLASTICS MACHINERY CO., LTD.) at temperature 230° C. and screw rotation 50 rpm to give strands, and the strands were cut by a pelletizer to give a thermoplastic polymer composition as pellets.

Comparative Example 4-1

In the same manner as in Example 4-2 except that compound (3-1) (0.1 part) was used instead of the stabilizer composition obtained in Example 4-1, a thermoplastic polymer composition was obtained as pellets.

Experimental Example 4-1

Evaluation of Processing Stability

For evaluation of the processing stability during operation of extrusion processing, Dwell MFR tests were performed using the pellets of each thermoplastic polymer composition obtained in Example 4-2 and Comparative Example 4-1. The test was based on JIS K 7210, and 30 min Dwell MFR (g/10 min) were measured by a melt indexer (L217-E14011 manufactured by Technol Seven Co., Ltd.) under the conditions of temperature in a cylinder 270° C. and load 2.16 kg. The 30 min Dwell MFR was measured after 30 min dwell time, including the preheating time, of the pellets of the thermoplastic polymer composition in the cylinder. Since decomposition of polypropylene is accelerated by the heat of processing, in a thermoplastic polymer composition containing polypropylene, a smaller 30 min Dwell MFR means better processing stability thereof.

The composition of the stabilizer composition of Example 4-1 is shown in Table 22, and the compositions and 30 min Dwell MFRs of the thermoplastic polymer compositions of Example 4-2 and Comparative Example 4-1 are shown in Table 23. Furthermore, the inhibition rate of MFR increment was calculated by the following formula and using the 30 min Dwell MFR of Example 4-2 and the 30 min Dwell MFR of Comparative Example 4-1:

inhibition rate of MFR increment(%)=[(30 min Dwell MFR of Comparative Example 4-1)−(30 min Dwell MFR of Example 4-2)]×100/(30 min Dwell MFR of Comparative Example 4-1).

The results are shown in Table 23.

TABLE 22
stabilizer composition
	compound (3-1)	trehalose	mass ratio of
	(part)	(part)	compound (3-1):trehalose
Ex. 4-1	0.1	0.01	10:1

TABLE 23
thermoplastic polymer composition
			30 min
		stabilizer	Dwell	inhibition
	PP	composition	MFR	rate of MFR
	(part)	kind	amount (part)	(g/10 min)	increment (%)
Ex.	100	Ex.	0.11	11.5	28.1
4-2		4-1
Comp.	100	compound	0.1	16.0	—
Ex.		(3-1)
4-1
PP: polypropylene

Example 4-3-Example 4-6

Production of Stabilizer Composition

Compound (3-1), trehalose, compound (1-1) and compound (2-1) in the amounts described in Table 24 were mixed to respectively produce stabilizer compositions.

Example 4-7

Production of Thermoplastic Polymer Composition

A styrene-butadiene block copolymer (manufactured by DENKI KAGAKU KOGYO KABUSHIKI KAISHA, 100 parts) and the stabilizer composition (0.21 part) obtained in Example 4-3 were dry-blended, the obtained mixture was knead-extruded by a single screw extruder having a screw diameter of 30 mm (“VS30-28 type extruder” manufactured by TANABE PLASTICS MACHINERY CO., LTD.) at temperature 230° C. and screw rotation 50 rpm to give strands, and the strands were cut by a pelletizer to give a thermoplastic polymer composition as pellets.

Example 4-8

Production of Thermoplastic Polymer Composition

In the same manner as in Example 4-7 except that the stabilizer composition (0.51 part) obtained in Example 4-4 was used instead of the stabilizer composition obtained in Example 4-3, a thermoplastic polymer composition was obtained as pellets.

Example 4-9

Production of Thermoplastic Polymer Composition

In the same manner as in Example 4-7 except that the stabilizer composition (0.41 part) obtained in Example 4-5 was used instead of the stabilizer composition obtained in Example 4-3, a thermoplastic polymer composition was obtained as pellets.

Example 4-10

Production of Thermoplastic Polymer Composition

In the same manner as in Example 4-7 except that the stabilizer composition (0.71 part) obtained in Example 4-6 was used instead of the stabilizer composition obtained in Example 4-3, a thermoplastic polymer composition was obtained as pellets.

Comparative Example 4-2

In the same manner as in Example 4-7 except that only compound (3-1) (0.2 part) was used instead of the stabilizer composition obtained in Example 4-3, a thermoplastic polymer composition was obtained as pellets.

Experimental Example 4-2

Evaluation of Processing Stability

For evaluation of the processing stability during operation of extrusion processing, Dwell MFR tests were performed using the pellets of each thermoplastic polymer composition obtained in Example 4-7-Example 4-10 and Comparative Example 4-2. The test was based on JIS K 7210, and 0 min Dwell MFR (g/10 min) and 30 min Dwell MFR (g/10 min) were measured by a melt indexer (L217-E14011 manufactured by Technol Seven Co., Ltd.) under the conditions of temperature in a cylinder 270° C. and load 2.16 kg. The 0 min Dwell MFR was measured after 5 min preheating time after filling pellets of the thermoplastic polymer composition in the cylinder. The 30 min Dwell MFR was measured after 30 min dwell time, including the preheating time, of the pellets of the thermoplastic polymer composition in the cylinder. The MFR variation rate was calculated by the following formula and using the thus-measured 0 min Dwell MFR and 30 min Dwell MFR:

MFR variation rate (%)=absolute value of (30 min Dwell MFR−0 min Dwell MFR)×100/(0 min Dwell MFR)

The compositions of the stabilizer compositions of Example 4-3-Example 4-6 are shown in Table 24, and the compositions, 0 min Dwell MFRS, 30 min Dwell MFRS and MFR variation rates of the thermoplastic polymer compositions in Example 4-7-Example 4-10 and Comparative Example 4-2 are shown in Table 25. In a thermoplastic polymer composition containing a styrene-butadiene block copolymer, a smaller MFR variation rate means better processing stability thereof.

TABLE 24
stabilizer composition
	compound		compound	compound
	(3-1)	trehalose	(1-1)	(2-1)
	amount	amount	amount	amount
	(part)	(part)	(part)	(part)
	Ex. 4-3	0.2	0.01	—	—
	Ex. 4-4	0.2	0.01	0.3	—
	Ex. 4-5	0.2	0.01	—	0.2
	Ex. 4-6	0.2	0.01	0.3	0.2

TABLE 25
thermoplastic polymer composition
	stabilizer	0 min	30 min	MFR
	composition	Dwell	Dwell	variation
	SBS		amount	MFR	MFR	rate
	(part)	kind	(part)	(g/10 min)	(g/10 min)	(%)
Ex.	100	Ex.	0.21	19.9	8.5	57.3
4-7		4-3
Ex.	100	Ex.	0.51	22.0	14.5	34.1
4-8		4-4
Ex.	100	Ex.	0.41	20.6	8.9	56.8
4-9		4-5
Ex.	100	Ex.	0.71	23.1	15.4	33.3
4-10		4-6
Comp.	100	compound	0.2	17.3	3.2	81.5
Ex.		(3-1)
4-2
SBS: styrene-butadiene block copolymer

Example 4-11-Example 4-139

Production of Stabilizer Composition

Stabilizer compositions are obtained by mixing the components described in Table 26-1-Table 26-4. Thermoplastic polymer compositions containing these stabilizer compositions are predicted to be superior in processing stability.

TABLE 26-1
stabilizer composition
	compounds		compound	compound	compound
	(3)-(7)	trehalose	(1)	(2)	(8)
		amount	amount		amount		amount		amount
Example	kind	(part)	(part)	kind	(part)	kind	(part)	kind	(part)
4-11	(3-1)	0.01	0.2	—	—	—	—	—	—
4-12	(3-1)	0.05	0.15	—	—	—	—	—	—
4-13	(3-1)	0.1	0.1	—	—	—	—	—	—
4-14	(3-1)	0.15	0.05	—	—	—	—	—	—
4-15	(3-1)	0.2	0.001	—	—	—	—	—	—
4-16	(3-1)	0.2	0.0002	—	—	—	—	—	—
4-17	(4-1)	0.01	0.2	—	—	—	—	—	—
4-18	(4-1)	0.05	0.15	—	—	—	—	—	—
4-19	(4-1)	0.1	0.1	—	—	—	—	—	—
4-20	(4-1)	0.15	0.05	—	—	—	—	—	—
4-21	(4-1)	0.2	0.01	—	—	—	—	—	—
4-22	(4-1)	0.2	0.001	—	—	—	—	—	—
4-23	(4-1)	0.2	0.0002	—	—	—	—	—	—
4-24	(5-1)	0.01	0.2	—	—	—	—	—	—
4-25	(5-1)	0.05	0.15	—	—	—	—	—	—
4-26	(5-1)	0.1	0.1	—	—	—	—	—	—
4-27	(5-1)	0.15	0.05	—	—	—	—	—	—
4-28	(5-1)	0.2	0.01	—	—	—	—	—	—
4-29	(5-1)	0.2	0.001	—	—	—	—	—	—
4-30	(5-1)	0.2	0.0002	—	—	—	—	—	—
4-31	(5-2)	0.01	0.2	—	—	—	—	—	—
4-32	(5-2)	0.05	0.15	—	—	—	—	—	—
4-33	(5-2)	0.1	0.1	—	—	—	—	—	—
4-34	(5-2)	0.15	0.05	—	—	—	—	—	—
4-35	(5-2)	0.2	0.01	—	—	—	—	—	—
4-36	(5-2)	0.2	0.001	—	—	—	—	—	—
4-37	(5-2)	0.2	0.0002	—	—	—	—	—	—
4-38	(5-3)	0.01	0.2	—	—	—	—	—	—
4-39	(5-3)	0.05	0.15	—	—	—	—	—	—
4-40	(5-3)	0.1	0.1	—	—	—	—	—	—
4-41	(5-3)	0.15	0.05	—	—	—	—	—	—
4-42	(5-3)	0.2	0.01	—	—	—	—	—	—

TABLE 26-2
stabilizer composition
	compounds		compound	compound	compound
	(3)-(7)	trehalose	(1)	(2)	(8)
		amount	amount		amount		amount		amount
Example	kind	(part)	(part)	kind	(part)	kind	(part)	kind	(part)
4-43	(5-3)	0.2	0.001	—	—	—	—	—	—
4-44	(5-3)	0.2	0.0002	—	—	—	—	—	—
4-45	(6-1)	0.01	0.2	—	—	—	—	—	—
4-46	(6-1)	0.05	0.15	—	—	—	—	—	—
4-47	(6-1)	0.1	0.1	—	—	—	—	—	—
4-48	(6-1)	0.15	0.05	—	—	—	—	—	—
4-49	(6-1)	0.2	0.01	—	—	—	—	—	—
4-50	(6-1)	0.2	0.001	—	—	—	—	—	—
4-51	(6-1)	0.2	0.0002	—	—	—	—	—	—
4-52	(7-1)	0.01	0.2	—	—	—	—	—	—
4-53	(7-1)	0.05	0.15	—	—	—	—	—	—
4-54	(7-1)	0.1	0.1	—	—	—	—	—	—
4-55	(7-1)	0.15	0.05	—	—	—	—	—	—
4-56	(7-1)	0.2	0.01	—	—	—	—	—	—
4-57	(7-1)	0.2	0.001	—	—	—	—	—	—
4-58	(7-1)	0.2	0.0002	—	—	—	—	—	—
4-59	(3-1)	0.01	0.2	(1-1)	0.2	—	—	—	—
4-60	(3-1)	0.2	0.01	(1-1)	0.2	—	—	—	—
4-61	(3-1)	0.2	0.0002	(1-1)	0.2	—	—	—	—
4-62	(4-1)	0.01	0.2	(1-1)	0.2	—	—	—	—
4-63	(4-1)	0.2	0.01	(1-1)	0.2	—	—	—	—
4-64	(4-1)	0.2	0.0002	(1-1)	0.2	—	—	—	—
4-65	(5-1)	0.01	0.2	(1-1)	0.2	—	—	—	—
4-66	(5-1)	0.2	0.01	(1-1)	0.2	—	—	—	—
4-67	(5-2)	0.2	0.0002	(1-1)	0.2	—	—	—	—
4-68	(5-2)	0.01	0.2	(1-1)	0.2	—	—	—	—
4-69	(5-2)	0.2	0.01	(1-1)	0.2	—	—	—	—
4-70	(5-3)	0.2	0.0002	(1-1)	0.2	—	—	—	—
4-71	(6-1)	0.01	0.2	(1-1)	0.2	—	—	—	—
4-72	(6-1)	0.2	0.01	(1-1)	0.2	—	—	—	—
4-73	(6-1)	0.2	0.0002	(1-1)	0.2	—	—	—	—
4-74	(7-1)	0.01	0.2	(1-1)	0.2	—	—	—	—

TABLE 26-3
stabilizer composition
	compounds		compound	compound	compound
	(3)-(7)	trehalose	(1)	(2)	(8)
		amount	amount		amount		amount		amount
Example	kind	(part)	(part)	kind	(part)	kind	(part)	kind	(part)
4-75	(7-1)	0.2	0.01	(1-1)	0.2	—	—	—	—
4-76	(7-1)	0.2	0.0002	(1-1)	0.2	—	—	—	—
4-77	(3-1)	0.2	0.01	(1-2)	0.2	—	—	—	—
4-78	(4-1)	0.2	0.01	(1-2)	0.2	—	—	—	—
4-79	(5-1)	0.2	0.01	(1-2)	0.2	—	—	—	—
4-80	(5-2)	0.2	0.01	(1-2)	0.2	—	—	—	—
4-81	(5-3)	0.2	0.01	(1-2)	0.2	—	—	—	—
4-82	(6-1)	0.2	0.01	(1-2)	0.2	—	—	—	—
4-83	(7-1)	0.2	0.01	(1-2)	0.2	—	—	—	—
4-84	(3-1)	0.2	0.01	—	—	(2-1)	0.2	—	—
4-85	(4-1)	0.2	0.01	—	—	(2-1)	0.2	—	—
4-86	(5-1)	0.2	0.01	—	—	(2-1)	0.2	—	—
4-87	(5-2)	0.2	0.01	—	—	(2-1)	0.2	—	—
4-88	(5-3)	0.2	0.01	—	—	(2-1)	0.2	—	—
4-89	(6-1)	0.2	0.01	—	—	(2-1)	0.2	—	—
4-90	(7-1)	0.2	0.01	—	—	(2-1)	0.2	—	—
4-91	(3-1)	0.2	0.01	—	—	(2-2)	0.2	—	—
4-92	(4-1)	0.2	0.01	—	—	(2-2)	0.2	—	—
4-93	(5-1)	0.2	0.01	—	—	(2-2)	0.2	—	—
4-94	(5-2)	0.2	0.01	—	—	(2-2)	0.2	—	—
4-95	(5-3)	0.2	0.01	—	—	(2-2)	0.2	—	—
4-96	(6-1)	0.2	0.01	—	—	(2-2)	0.2	—	—
4-97	(7-1)	0.2	0.01	—	—	(2-2)	0.2	—	—
4-98	(3-1)	0.2	0.01	—	—	(2-3)	0.2	—	—
4-99	(4-1)	0.2	0.01	—	—	(2-3)	0.2	—	—
4-100	(5-1)	0.2	0.01	—	—	(2-3)	0.2	—	—
4-101	(5-2)	0.2	0.01	—	—	(2-3)	0.2	—	—
4-102	(5-3)	0.2	0.01	—	—	(2-3)	0.2	—	—
4-103	(6-1)	0.2	0.01	—	—	(2-3)	0.2	—	—
4-104	(7-1)	0.2	0.01	—	—	(2-3)	0.2	—	—
4-105	(3-1)	0.2	0.01	—	—	—	—	(8-1)	0.2
4-106	(4-1)	0.2	0.01	—	—	—	—	(8-1)	0.2

TABLE 26-4
stabilizer composition
	compounds		compound	compound	compound
	(3)-(7)	trehalose	(1)	(2)	(8)
		amount	amount		amount		amount		amount
Example	kind	(part)	(part)	kind	(part)	kind	(part)	kind	(part)
4-107	(5-1)	0.2	0.01	—	—	—	—	(8-1)	0.2
4-108	(5-2)	0.2	0.01	—	—	—	—	(8-1)	0.2
4-109	(5-3)	0.2	0.01	—	—	—	—	(8-1)	0.2
4-110	(6-1)	0.2	0.01	—	—	—	—	(8-1)	0.2
4-111	(7-1)	0.2	0.01	—	—	—	—	(8-1)	0.2
4-112	(3-1)	0.2	0.01	(1-1)	0.2	(2-1)	0.2	—	—
4-113	(4-1)	0.2	0.01	(1-1)	0.2	(2-1)	0.2	—	—
4-114	(5-1)	0.2	0.01	(1-1)	0.2	(2-1)	0.2	—	—
4-115	(5-2)	0.2	0.01	(1-1)	0.2	(2-1)	0.2	—	—
4-116	(5-3)	0.2	0.01	(1-1)	0.2	(2-1)	0.2	—	—
4-117	(6-1)	0.2	0.01	(1-1)	0.2	(2-1)	0.2	—	—
4-118	(7-1)	0.2	0.01	(1-1)	0.2	(2-1)	0.2	—	—
4-119	(3-1)	0.2	0.01	(1-1)	0.2	—	—	(8-1)	0.2
4-120	(4-1)	0.2	0.01	(1-1)	0.2	—	—	(8-1)	0.2
4-121	(5-1)	0.2	0.01	(1-1)	0.2	—	—	(8-1)	0.2
4-122	(5-2)	0.2	0.01	(1-1)	0.2	—	—	(8-1)	0.2
4-123	(5-3)	0.2	0.01	(1-1)	0.2	—	—	(8-1)	0.2
4-124	(6-1)	0.2	0.01	(1-1)	0.2	—	—	(8-1)	0.2
4-125	(7-1)	0.2	0.01	(1-1)	0.2	—	—	(8-1)	0.2
4-126	(3-1)	0.2	0.01	—	—	(2-1)	0.2	(8-1)	0.2
4-127	(4-1)	0.2	0.01	—	—	(2-1)	0.2	(8-1)	0.2
4-128	(5-1)	0.2	0.01	—	—	(2-1)	0.2	(8-1)	0.2
4-129	(5-2)	0.2	0.01	—	—	(2-1)	0.2	(8-1)	0.2
4-130	(5-3)	0.2	0.01	—	—	(2-1)	0.2	(8-1)	0.2
4-131	(6-1)	0.2	0.01	—	—	(2-1)	0.2	(8-1)	0.2
4-132	(7-1)	0.2	0.01	—	—	(2-1)	0.2	(8-1)	0.2
4-133	(3-1)	0.2	0.01	(1-1)	0.2	(2-1)	0.2	(8-1)	0.2
4-134	(4-1)	0.2	0.01	(1-1)	0.2	(2-1)	0.2	(8-1)	0.2
4-135	(5-1)	0.2	0.01	(1-1)	0.2	(2-1)	0.2	(8-1)	0.2
4-136	(5-2)	0.2	0.01	(1-1)	0.2	(2-1)	0.2	(8-1)	0.2
4-137	(5-3)	0.2	0.01	(1-1)	0.2	(2-1)	0.2	(8-1)	0.2
4-138	(6-1)	0.2	0.01	(1-1)	0.2	(2-1)	0.2	(8-1)	0.2
4-139	(7-1)	0.2	0.01	(1-1)	0.2	(2-1)	0.2	(8-1)	0.2

Example 4-140-Example 4-199

Production of Thermoplastic Polymer Composition

In the same manner as in Example 4-2 except that the thermoplastic polymers (100 parts) described in Table 27-1 and Table 27-2, and the stabilizer compositions in the kinds and amounts described in Table 27-1 and Table 27-2 are used, thermoplastic polymer compositions are obtained as pellets. The obtained thermoplastic polymer compositions are predicted to be superior in processing stability.

The meanings of the abbreviations of the thermoplastic polymers described in Table 27-1 and Table 27-2 are as follows.

P4-1: high density polyethylene (HDPE)P4-2: low density polyethylene (LDPE)P4-3: linear low density polyethylene (LLDPE)P4-4: ethylene-vinyl alcohol copolymer (EVOH)P4-5: ethylene-ethyl acrylate copolymer (EEA)P4-6: ethylene-vinyl acetate copolymer (EVA)P4-7: propylene-ethylene random copolymerP4-8: propylene-α-olefin random copolymerP4-9: propylene-ethylene-α-olefin copolymerP4-10: polystyrene (PS)P4-11: acrylonitrile-styrene copolymer (SAN)P4-12: acrylonitrile-butadiene-styrene copolymer (ABS)P4-13: special acrylic rubber-acrylonitrile-styrene copolymerP4-14: acrylonitrile-chlorinated polyethylene-styrene copolymer (ACS)P4-15: polybutadiene rubber (BR)P4-16: styrene-butadiene copolymer (SB)P4-17: styrene-butadiene block copolymer (SBS)P4-18: chlorinated polyethylene (CPE)P4-19: polychloropreneP4-20: chlorinated rubberP4-21: polyvinyl chloride) (PVC)P4-22: poly(vinylidene chloride) (PVDC)P4-23: methacrylate resinP4-24: fluororesinP4-25: polyacetal (POM)P4-26: grafted poly(phenylene ether) resinP4-27: poly(phenylene sulfide) resin (PPS)P4-28: polyurethane (PU)P4-29: polyamide (PA)P4-30: poly(ethylene terephthalate) (PET)P4-31: poly(butylene terephthalate) (PBT)P4-32: poly(lactic acid) (PLA)P4-33: polycarbonate (PC)P4-34: polyacrylateP4-35: polysulfone (PPSU)P4-36: poly(ether ether ketone) (PEEK)P4-37: poly(ether sulfone) (PES)P4-38: aromatic polyesterP4-39: diallyl phthalate prepolymerP4-40: silicone resin (SI)P4-41: 1,2-polybutadieneP4-42: polyisopreneP4-43: butadiene-acrylonitrile copolymer (NBR)P4-44: ethylene-methyl methacrylate copolymer (EMMA)

TABLE 27-1
thermoplastic polymer composition
	thermoplastic	stabilizer composition
	Example	polymer	kind	amount (part)
	4-140	P4-1	Ex. 4-1	0.11
	4-141	P4-2	Ex. 4-1	0.11
	4-142	P4-3	Ex. 4-1	0.11
	4-143	P4-3	Ex. 4-3	0.21
	4-144	P4-3	Ex. 4-4	0.51
	4-145	P4-3	Ex. 4-5	0.41
	4-146	P4-3	Ex. 4-6	0.71
	4-147	P4-4	Ex. 4-1	0.11
	4-148	P4-4	Ex. 4-5	0.21
	4-149	P4-4	Ex. 4-6	0.51
	4-150	P4-4	Ex. 4-7	0.41
	4-151	P4-4	Ex. 4-8	0.71
	4-152	P4-5	Ex. 4-1	0.11
	4-153	P4-6	Ex. 4-1	0.11
	4-154	P4-7	Ex. 4-1	0.11
	4-155	P4-8	Ex. 4-1	0.11
	4-156	P4-9	Ex. 4-1	0.11
	4-157	P4-10	Ex. 4-1	0.11
	4-158	P4-10	Ex. 4-3	0.21
	4-159	P4-10	Ex. 4-4	0.51
	4-160	P4-10	Ex. 4-5	0.41
	4-161	P4-10	Ex. 4-6	0.71
	4-162	P4-11	Ex. 4-1	0.11
	4-163	P4-12	Ex. 4-1	0.11
	4-164	P4-12	Ex. 4-3	0.21
	4-165	P4-12	Ex. 4-4	0.51
	4-166	P4-12	Ex. 4-5	0.41
	4-167	P4-12	Ex. 4-6	0.71
	4-168	P4-13	Ex. 4-1	0.11
	4-169	P4-14	Ex. 4-1	0.11

TABLE 27-2
thermoplastic polymer composition
		thermoplastic	stabilizer composition
	Example	polymer	kind	amount (part)
	4-170	P4-15	Ex. 4-1	0.11
	4-171	P4-16	Ex. 4-1	0.11
	4-172	P4-17	Ex. 4-1	0.11
	4-173	P4-18	Ex. 4-1	0.11
	4-174	P4-19	Ex. 4-1	0.11
	4-175	P4-20	Ex. 4-1	0.11
	4-176	P4-21	Ex. 4-1	0.11
	4-177	P4-22	Ex. 4-1	0.11
	4-178	P4-23	Ex. 4-1	0.11
	4-179	P4-24	Ex. 4-1	0.11
	4-180	P4-25	Ex. 4-1	0.11
	4-181	P4-26	Ex. 4-1	0.11
	4-182	P4-27	Ex. 4-1	0.11
	4-183	P4-28	Ex. 4-1	0.11
	4-184	P4-29	Ex. 4-1	0.11
	4-185	P4-30	Ex. 4-1	0.11
	4-186	P4-31	Ex. 4-1	0.11
	4-187	P4-32	Ex. 4-1	0.11
	4-188	P4-33	Ex. 4-1	0.11
	4-189	P4-34	Ex. 4-1	0.11
	4-190	P4-35	Ex. 4-1	0.11
	4-191	P4-36	Ex. 4-1	0.11
	4-192	P4-37	Ex. 4-1	0.11
	4-193	P4-38	Ex. 4-1	0.11
	4-194	P4-39	Ex. 4-1	0.11
	4-195	P4-40	Ex. 4-1	0.11
	4-196	P4-41	Ex. 4-1	0.11
	4-197	P4-42	Ex. 4-1	0.11
	4-198	P4-43	Ex. 4-1	0.11
	4-199	P4-44	Ex. 4-1	0.11

INDUSTRIAL APPLICABILITY

The thermoplastic polymer composition of the present invention containing compound (1), compound (2), at least one selected from the group consisting of compounds (3)-(7), or compound (8) and trehalose shows superior processing stability. The thermoplastic polymer composition of the present invention can be used for, for example, the production of electronic components, automobile parts, clock components, camera components, components of leisure goods and the like.

Claims

1. A thermoplastic polymer composition comprising a compound represented by the formula (1):

2. The thermoplastic polymer composition according to claim 1, wherein the total amount of the compound represented by the formula (1) and trehalose is 0.001-3 parts by weight relative to 100 parts by weight of the thermoplastic polymer.

3. A stabilizer composition comprising a compound represented by the formula (1):

4. The stabilizer composition according to claim 3, wherein the compound represented by the formula (1) is at least one selected from the group consisting of 2,4-di-t-pentyl-6-[1-(3,5-di-t-pentyl-2-hydroxyphenyl)ethyl]phenyl acrylate and 2-t-butyl-6-(3-t-butyl-2-hydroxy-5-methylbenzyl)-4-methylphenyl acrylate.

5. The stabilizer composition according to claim 3 or 4, further comprising a compound represented by the formula (2):

6. The stabilizer composition according to claim 3 or 4, further comprising at least one selected from the group consisting of the compounds represented by the formulas (3)-(7):

7. The stabilizer composition according to claim 6, wherein at least one selected from the group consisting of the compounds represented by the formulas (3)-(7) is the compound represented by the formula (3).

8. A thermoplastic polymer composition comprising a compound represented by the formula (8):

9. The thermoplastic polymer composition according to claim 8, wherein the total amount of the compound represented by the foiniula (8) and trehalose is 0.001-3 parts by weight relative to 100 parts by weight of the thermoplastic polymer.

10-25. (canceled)