Claims
- 1. A method for producing a resin composition comprising the steps of:(A) preparing an ethylene/α-olefin random copolymer by randomly copolymerizing ethylene and an α-olefin having 3 to 20 carbon atoms by a solution polymerization process in the presence of a catalyst comprising a compound represented by the following formula (I): wherein M is a transition metal of Group IVB of the periodic table,R1 is a hydrocarbon group having 1 to 6 carbon atoms; R2, R4, R5 and R6 may be identical with or different from each other and are each hydrogen, a halogen atom or a hydrocarbon group of 1 to 6 carbon atoms, R3 is an aryl group of 6 to 16 carbon atoms which may be substituted with a halogen atom, a hydrocarbon group of 1 to 20 carbon atoms or an organosilyl group, X1 and X2 are each independently hydrogen, a halogen atom, a hydrocarbon group of 1 to 20 carbon atoms, a halogenated hydrocarbon group of 1 to 20 carbon atoms, an oxygen-containing group or a sulfur-containing group, and Y is a divalent hydrocarbon group of 1 to 20 carbon atoms, a divalent halogenated hydrocarbon group of 1 to 20 carbon atoms, a divalent silicon-containing group, a divalent germanium-containing group, a divalent tin-containing group, —O—, —CO—, —S—, —SO—, —SO2, NR7—, —P(R7)—, —P(O)(R7)—, —BR7— or —A1R7— wherein R7 is hydrogen, a halogen atom, a hydrocarbon group of 1 to 20 carbon atoms or a halogenated hydrocarbon group of 1 to 20 carbon atoms, wherein the ethylene/α-olefin random copolymer has: (a) a density of not more than 0.900 g/cm3; (b) an intrinsic viscosity (η), as measured in decalin at 135° C., of 0.3 to 3.0 dl/g; (c) a crystallinity, as measured by X-ray diffractometry, of less than 40%; (d) a molecular weight distribution (Mw/Mn), as measured by GPC, of not more than 3.0; and (e) a B value, as determined by 13C-NMR spectrum and the following equation, of 1.0 to 1.4, B value=(POE)/(2·(PE)·(PO)) wherein (PE) and (PO) are respectively a molar fraction of the units derived from ethylene and a molar fraction of the units derived from the α-olefin in the ethylene/α-olefin random copolymer, and (POE) is a proportion of the number of the α-olefin/ethylene sequences to the number of all the dyad sequences;(B) mixing said ethylene/α-olefin random copolymer in an amount of 50 to 5000 parts by weight, with an ethylene/α-olefin copolymer resin in an amount of 100 parts by weight,wherein said ethylene/α-olefin copolymer resin has: (a) a melt flow rate (MFR), measured at 190° C. and a load of 2.16 kg, of 7 to 50 g/10 min; and (b) a density of 0.901 to 0.925 g/cm3; and (C) molding said resin mixture.
Priority Claims (2)
Number |
Date |
Country |
Kind |
7-233117 |
Sep 1995 |
JP |
|
7-236770 |
Sep 1995 |
JP |
|
CROSS REFERENCE TO RELATED APPLICATION
This application is a continuation application Ser. No. 08/836,351, filed May 9, 1997, now abandoned, which is a 35 U.S.C. §371 filing of PCT Application Ser. No. PCT/JP96/02575 filed Sep. 10, 1996, which in turn claims priority from Japanese Application No. 7-233117 filed Sep. 11, 1995 and Japanese Application No. 7-236770 filed Sep. 14, 1995.
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Entry |
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Continuations (1)
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Number |
Date |
Country |
Parent |
08/836351 |
|
US |
Child |
10/133445 |
|
US |