Umg Abs, Ltd.

Mitsubishi Rayon Company, Limited

Techno-umg Co., Ltd.

Kousaku Tao

Nobutaka Hase

Yoshitaka Naitoh

Risa Nii

Yoshiaki Shinohara

Takashi Iwanaga

Yuuki Taguchi

Tomonori Takase

Keiichi Yagi

A graft copolymer (B) produced by graft polymerization of a vinyl monomer mixture (m1) including an alkyl (meth)acrylate ester onto a copolymer (A), the copolymer (A) being a copolymer of an alkyl (meth)acrylate ester (Aa) and a (meth)acrylate ester (Ab) including an aromatic hydrocarbon group. A thermoplastic resin composition including the graft copolymer (B), a copolymer (C) that is the product of a polymerization reaction of a vinyl monomer mixture (m2) including an alkyl (meth)acrylate ester, and a molded article produced by molding the thermoplastic resin composition. Provided are the graft copolymer with which a thermoplastic resin composition excellent in terms of transparency, impact resistance, weather resistance, and flowability may be produced, a thermoplastic resin composition including the graft copolymer, and the molded article produced by molding the thermoplastic resin composition.

Graft copolymer, thermoplastic resin composition, and molded article produced by molding the same

A thermoplastic resin composition of the present invention contains a graft copolymer (B) obtained by polymerizing a vinyl-based monomer component (m1) in the presence of a composite rubber polymer (A) formed from a polyorganosiloxane (Aa) and a poly(meth)acrylate ester (Ab), and a (meth)acrylate ester resin (C) obtained by polymerizing a vinyl-based monomer component (m2), wherein the amount of the polyorganosiloxane (Aa) relative to the total mass (100% by mass) of the composite rubber polymer (A) is from 1 to 20% by mass, the volume average particle size of the composite rubber polymer (A) is from 0.05 to 0.15 &#x3bc;m, and relative to the total mass (100% by mass) of the vinyl-based monomer component (m2), the amount of the maleimide-based compound is from 1 to 30% by mass, and the amount of the aromatic vinyl compound is from 5.5 to 15% by mass.

Thermoplastic resin composition and molded article thereof

[Object] To provide lubricating thermoplastic resin compositions that can give formed articles exhibiting excellent lubricating properties and surface appearance and maintaining the lubricating properties permanently. [Solution] The lubricating thermoplastic resin composition includes an acid-modified copolymer (A) of a monomer mixture including an aromatic vinyl and a vinyl cyanide, the copolymer having a carboxyl group in the molecular chain, and a functionalized lubricant (B) having, in the molecule, a functional group (B1) capable of reacting with the carboxyl group and a lubricating segment (B2) having lubricating properties. The composition may further include a graft copolymer (C) and/or an additional thermoplastic resin (D) other than the acid-modified copolymer (A).

Lubricating thermoplastic resin composition and formed article thereof

This graft copolymer is obtainable by polymerization of a vinyl-based monomer mixture (m) including an aromatic vinyl compound and a vinyl cyanide compound, in the presence of: an ethylene.&#x3b1;-olefin copolymer (A) which has a mass average molecular weight (Mw) of 17&#xd7;10to 35&#xd7;10and a distribution of molecular weight (Mw/Mn) of 1 to 3; or a cross-linked ethylene.&#x3b1;-olefin copolymer (C) obtainable by cross-linking treatment of the ethylene.&#x3b1;-olefin copolymer (A).

Graft copolymer, thermoplastic resin composition, and molded article of said resin composition

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Ube, Japan

Kousaku Tao