Claims
- 1. A thermoplastic elastomer composition which comprises:
- totally 100 parts by weight of (A) 30-58 parts by weight of at least one member selected from the group consisting of polyethylene terephthalate and polybutylene terephthalate and
- (B) 42-70 parts by weight of an epoxy group-containing ethylene copolymer comprising (a) 50-99% by weight of ethylene units, (b) 0.1-30% by weight of unsaturated carboxylic acid glycidyl ester units or unsaturated glycidyl ether units, and (c) 0-49% by weight of ethylenically unsaturated ester compound unit and obtained by copolymerizing (a), (b), and (c) in the presence of a radical former under a pressure of 500-4000 atm and at a temperature of 100.degree.-300.degree. C.;
- (C) 0.01-20 parts by weight of a polyfunctional compound containing at least two identical or different functional groups selected from an amino group, a carboxyl group, a carboxylic anhydride group, a hydroxyl group and a ##STR10## wherein X and Y are both oxygen atoms or sulfur atoms or one of them is an oxygen atom and another is a sulfur atom; and
- (D) 1-30 parts by weight of a polytetramethylene glycol polybutylene terephthalate block copolymer.
- 2. A thermoplastic elastomer composition according to claim 1, wherein the polyfunctional compound of component (C) is an aliphatic diamine carbamate.
- 3. A thermoplastic elastomer composition according to claim 1, wherein the polyfunctional compound of component (C) is ethylene copolymer comprising ethylene unit and .alpha.,.beta.-unsaturated carboxilic acid N,N-dialkylaminoalkyl ester unit or ethylene unit and .alpha.,62 -unsaturated carboxylic acid N,N-dialkylaminoalkylamide unit.
- 4. A thermoplastic elastomer composition according to claim 1, wherein the polyfunctional compound of component (C) is ethylene copolymer comprising ethylene unit, .alpha.,.beta.-unsaturated carboxylic acid alkyl ester unit and maleic anhydride unit.
- 5. A thermoplastic elastomer composition according to claim 1, wherein the compound having ##STR11## of the polyfunctional compound of comet portent (C) is a heterocyclic compound.
- 6. A thermoplastic elastomer composition according to claim 1, wherein the polyfunctional compound of component (C) is a dicarboxylic acid.
- 7. A thermoplastic elastomer composition according to claim 1, wherein the polyfunctional compound of component (C) is ethylene copolymer comprising ethylene unit and .alpha.,.beta.-unsaturated carboxylic acid unit or ethylene copolymer comprising unsaturated carboxylic acid alkyl ester unit in addition to the two units above.
- 8. A thermoplastic elastomer composition according to claim 1, wherein the polyfunctional compound of component (C) comprises carboxyl group and amino group.
Priority Claims (1)
Number |
Date |
Country |
Kind |
2-272280 |
Oct 1990 |
JPX |
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Parent Case Info
This is a continuation of application No. 07/774,618, filed on Oct. 10, 1991, which was abandoned upon the filing hereof.
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Continuations (1)
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Number |
Date |
Country |
Parent |
774618 |
Oct 1991 |
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