Polyphenylene sulfide composition and shaped articles made therefrom

Claim 2

A polyphenylene sulfide composition comprising (A) at least about 55 weight % of a polyphenylene sulfide, (B) a copolymer of ethylene with a glycidyl ester of an α, β-unsaturated acid, which contains 0.1 to 30% by weight, based on the weight of the copolymer, of an epoxy group, and (C) at least one elastomer selected from the group consisting of ethylene/propylene copolymers, which are free of acid anhydride groups and contain 30 to 95% by weight, based on the weight of the copolymer, of ethylene units, ethylene/butene copolymers, ethylene/propylene/diene terpolymers, hydrogenated styrene/butadiene/styrene block copolymers, and copolymers of ethylene with alkyl esters of acrylic acid wherein the mixing weight ratio among the polyphenylene sulfide (A), the copolymer of ethylene with a glycidyl ester of an α, β-unsaturated acid (B) and the elastomer (C) is within a ratio such that the (A)/((B)+(C)) weight ratio is from 70/30 to 95/5 and the (B)/(C) weight ratio is from 10/90 to 80/20.

Claim 3

A polyphenylene sulfide composition as set forth in claim 1, wherein the polyphenylene sulfide (A) has been washed with an acid and then washed with water.

Claim 4

A polyphenylene sulfide composition as set forth in claim 1, wherein the polyphenylene sulfide (A) has been washed with hot water maintained at a temperature of at least 100° C., and then washed with water maintained at a temperature of lower than 100° C.

Claim 5

A polyphenylene sulfide composition as set forth in claim 1, wherein the polyphenylene sulfide (A) has been washed with an organic solvent and then washed with water.

Claim 6

A polyphenylene sulfide composition as set forth in claim 1, wherein the copolymer of ethylene with a glycidyl ester of an α, β-unsaturated acid (B) is an ethylene/glycidyl acrylate copolymer or an ethylene/glycidyl methacrylate copolymer.

Claim 7

A polyphenylene sulfide composition as set forth in claim 1, wherein the elastomer (C) is an ethylene/propylene copolymer or an ethylene/butene copolymer.

Claim 8

A polyphenylene sulfide composition as set forth in claim 1, which further comprises at least one member selected from the group consisting of fibrous reinforcers and granular reinforcers.

Claim 9

A polyphenylene sulfide composition comprising (A) at least about 55 weight % of a polyphenylene sulfide, (B) a copolymer of ethylene with a glycidyl ester of an α,β-unsaturated acid, which contains 0.1 to 30% by weight, based on the weight of the copolymer, of an epoxy group, and (C) at least one elastomer selected from the group consisting of polyamide elastomers, ethylene/propylene copolymers which are free of acid anhydride groups and contain 30 to 95% by weight, based on the weight of the copolymer, of ethylene units, ethylene/butene copolymers, ethylene/propylene/diene terpolymers, hydrogenated styrene/butadiene/styrene block copolymers, and copolymers of ethylene with alkyl esters of acrylic acid, said polyamide elastomers being block copolymers having hard segments of a polyamide component selected from the group consisting of (--NH--R I --CO--) n and (--NH--R II --NHCO--R III --CO--) n in which R I , R II and R III are alkylene groups of 2 to 15 carbon atoms or a substitution product thereof, and n is a positive integer, and soft segments of at least one component selected from the group consisting of polyether components and polyester components, the polyether component comprising the formula (--OR--) n in which R is an alkylene group of 2 to 15 carbon atoms or a substitution product thereof, and n is a positive integer, and the polyester component selected from the group consisting of (--OR I --CO--) n and (--O--R II --OCO--R III --CO--) n in which R I , R II and R III are alkylene groups of 2 to 15 carbon atoms or a substitution product thereof, and n is a positive integer, and wherein the mixing weight ratio among the polyphenylene sulfide (A), the copolymer of ethylene with a glycidyl ester of an α, β-unsaturated acid (B) and the elastomer (C) is within a ratio such that the (A)/((B)+(C)) weight ratio is from 70/30 to 95/5 and the (B)/(C) weight ratio is from 10/90 to 80/20.

Claim 10

A polyphenylene sulfide composition comprising (A) at least about 55 weight % of a polyphenylene sulfide, (B) a copolymer of ethylene with a glycidyl ester of an α,β-unsaturated acid, which contains 0.1 to 30% by weight, based on the weight of the copolymer, of an epoxy group, and (C) at least one elastomer selected from the group consisting of polyamide elastomers, ethylene/propylene copolymers which are free of acid anhydride groups and contain 30 to 95% by weight, based on the weight of the copolymer, of ethylene units, ethylene/butene copolymers, ethylene/propylene/diene terpolymers, hydrogenated styrene/butadiene/styrene block copolymers, and copolymers of ethylene with alkyl esters of acrylic acid, said polyamide elastomers being block copolymers having hard segments of a polyamide component selected from the group consisting of (--NH--R I --CO--) n and (--NH--R II --NHCO--R III --CO--) n in which R I , R II and R III are alkylene groups of 2 to 15 carbon atoms or a substitution product thereof, and n is a positive integer, and soft segments of at least one component selected from the group consisting of polyether components and polyester components, the polyether component comprising the formula (--OR--) n in which R is an alkylene group of 2 to 15 carbon atoms or a substitution product thereof, and n is a positive integer, and the polyester component selected from the group consisting of (--OR I --CO--) n and (--O--R II --OCO--R III --CO--) n in which R I , R II and R III are alkylene groups of 2 to 15 carbon atoms or a substitution product thereof, and n is a positive integer, and wherein the mixing weight ratio among the polyphenylene sulfide (A), the copolymer of ethylene with a glycidyl ester of an α, β-unsaturated acid (B) and the elastomer (C) is within a ratio such that the (A)/((B)+(C)) weight ratio is from 70/30 to 95/5 and the (B)/(C) weight ratio is from 10/90 to 80/20.