Resin composition and process for preparation thereof

Claim 2

A resin composition comprising (A) 5 to 90% by weight of a modified polyphenylene ether obtained by reacting 100 parts by weight of a polyphenylene ether prepared by oxidative polymerization of at least one phenol represented by the following formula (I): wherein R¹ , R² , R³ and R⁴ independently represent a hydrogen atom, an alkyl, alkoxy or haloalkyl group having 1 to 10 carbon atoms, an aryl group or a halogen atom, with 0.05 to 20 parts by weight of a substituted olefin compound having in the molecule at least one functional group selected from the group consisting of a carboxylic acid group, a carboxylic anhydride group and an imide group in the presence of a radical generator, (B) 5 to 90% by weight of a polyamide, (C) 1 to 20% by weight of a block copolymer elastomer of the A-B-A′ type (in which A and A′ stand for a vinyl aromatic hydrocarbon block and B stands for a polymerized conjugated diene block or a hydrocarbon block formed by hydrogenating a part or all of said conjugated diene block), and (D) 1 to 20% by weight of a modified polyolefin having in the molecule at least one functional group selected from the group consisting of a carboxylic acid group, a carboxylic acid metal salt group, a carboxylic acid ester group, a carboxylic anhydride group and an imide group.

Claim 3

A resin composition as set forth in claim 1, wherein the polyphenylene ether is a homopolymer of 2,6-dimethylphenol or a copolymer of 2,6-dimethylphenol with 2,3,6-trimethylphenol.

Claim 4

A resin composition as set forth in claim 1, wherein the modified polyphenylene ether is obtained by reaction of a polyphenylene ether with an olefin compound containing a carboxylic anhydride group or an imide group.

Claim 5

A resin composition as set forth in claim 3, wherein the olefin compound containing a carboxylic anhydride group is maleic anhydride, itaconic anhydride or glutaconic anhydride.

Claim 6

A resin composition as set forth in claim 3, wherein the olefin compound containing an imide group is N-phenylmaleimide or N-methylmaleimide.

Claim 7

A resin composition as set forth in claim 1, wherein the polyamide is a linear aliphatic polyamide.

Claim 8

A resin composition resin as set forth in claim 6, wherein the polyamide is at least one member selected from the group consisting of nylon 6, nylon 66 and copolymers thereof.

Claim 9

A resin composition as set forth in claim 1, wherein the copolymer elastomer of the A-B-A′ type is a styrene/butadiene/styrene block copolymer or a styrene/isoprene/styrene block copolymer.

Claim 10

A resin composition as set forth in claim 1, wherein the hydrogenated block copolymer elastomer of the A-B-A′ type is a hydrogenated styrene/buta­diene/styrene block copolymer or a hydrogenated styrene/isoprene/styrene block copolymer.

Claim 11

A resin composition as set forth in claim 1, wherein the modified polyolefin is a member selected from the group consisting of an ethylene/methacrylic acid copolymer, a partial metal salt thereof, an ethylene/ethyl acrylate-g-maleic anhydride copolymer, an ethylene/ethyl acrylate-g-N-phenylmaleimide copolymer, an ethylene/propylene-g-maleic anhydride copolymer, an ethylene/butene-1-g-maleic anhydride copolymer, an ethylene/propylene-g-maleic anhydride-N-phenylmaleimide copolymer and an ethylene/butene-1-g-phenylmaleimide copolymer.

Claim 12

A process for the preparation of a resin composition, which comprises melt-kneading at a temperature of 220 to 350°C (A) 5 to 90% by weight of a modified polyphenylene ether obtained by reacting 100 parts by weight of a polyphenylene ether prepared by oxidative polymerization of at least one phenol represented by the following formula (I): wherein R¹, R², R³ and R⁴, which may be the same or different, stand for a hydrogen atom, an alkyl, alkoxy or haloalkyl group having 1 to 10 carbon atoms, an aryl group or a halogen atom, with 0.05 to 20 parts by weight of a substituted olefin compound having in the molecule at least one functional group selected from the group consisting of a carboxylic acid group, a carboxylic anhydride group and an imide group in the presence of a radical generator, (B) 5 to 90% by weight of a polyamide, (C) 1 to 20% by weight of a block copolymer elastomer of the A-B-A′ type (in which A and A′ stand for a vinyl aromatic hydrocarbon block and B stands for a polymerized conjugated diene block or a hydrocarbon block formed by hydrogenating a part or all of said conjugated diene block), and (D) 1 to 20% by weight of a modified polyolefin having in the molecule at least one functional group selected from the group consisting of a carboxylic acid group, a carboxylic acid metal salt group, a carboxylic acid ester group, a carboxylic anhydride group and an imide group.

Claim 13

A process for the preparation of a resin composition, which comprises melt-kneading at a temperature of 220 to 350°C (A) 5 to 90% by weight of a modified polyphenylene ether obtained by reacting 100 parts by weight of a polyphenylene ether prepared by oxidative polymerization of at least one phenol represented by the following formula (I): wherein R¹, R², R³ and R⁴, which may be the same or different, stand for a hydrogen atom, an alkyl, alkoxy or haloalkyl group having 1 to 10 carbon atoms, an aryl group or a halogen atom, with 0.05 to 20 parts by weight of a substituted olefin compound having in the molecule at least one functional group selected from the group consisting of a carboxylic acid group, a carboxylic anhydride group and an imide group in the presence of a radical generator, (B) 5 to 90% by weight of a polyamide, (C) 1 to 20% by weight of a block copolymer elastomer of the A-B-A′ type (in which A and A′ stand for a vinyl aromatic hydrocarbon block and B stands for a polymerized conjugated diene block or a hydrocarbon block formed by hydrogenating a part or all of said conjugated diene block), and (D) 1 to 20% by weight of a modified polyolefin having in the molecule at least one functional group selected from the group consisting of a carboxylic acid group, a carboxylic acid metal salt group, a carboxylic acid ester group, a carboxylic anhydride group and an imide group.