Techno Polymer Company Limited

Norifumi Sumimoto

Masahiko Noro

Wataru Kakuno

Kunio Matsusaka

The present invention provides a thermoplastic resin composition producing an extremely small amount of outgas and providing a molded article having excellent antistaticity. The present thermoplastic resin composition comprises a thermoplastic resin and is characterized in that the amount of outgas is 1500 &#x3bc;g/g or less. The composition may comprise a surface resistivity reducing substance in an amount of 0.1 to 70 parts by mass relative to 100 parts by mass of the thermoplastic resin. The present invention is suitable to a composition comprising a styrenic resin as the thermoplastic resin. The surface resistivity reducing substrate is preferably a polyamide elastomer comprising a hard segment formed of polyamide 12 and a soft segment formed of poly(alkylene oxide)glycol. The polyamide elastomer preferably has a refractive index of 1.5 to 1.53, a melting point of 130 to 160&#xb0; C., a solution viscosity of 1.35 to 1.70 and a surface resistivity of 1&#xd7;10to 1&#xd7;10&#x3a9;.

Thermoplastic resin composition and resin molding

The objective of the present invention is to provide a rubber-reinforced resin which, when formed into a molded article, can prevent contamination or soiling of an article contacted with the molded article or a device on the periphery of the molded article and is excellent in impact resistance and transparency, and an anti-static resin composition which is excellent in impact resistance and anti-static properties. The present rubber-reinforced resin comprises a rubber-reinforced copolymeric resin produced by polymerization of 20 to 95 parts by mass of monomer components comprising methyl methacrylate, an aromatic vinyl compound and a cyanidated vinyl compound in the presence of a rubbery polymer having a predetermined volume-average particle diameter, or comprises a mixture of the rubber-reinforced copolymeric resin and a copolymer of the above-mentioned monomer components. Additionally, the present anti-static resin composition comprises the above-mentioned rubber-reinforced resin and a polymer type anti-static agent, wherein the rubbery polymer is contained in an amount from 5% to 40% by mass. In each of the rubber-reinforced resin and the anti-static resin composition, the total amount of substances detected at a retention time of 10 to 24 minutes is 20,000 &#x3bc;g or less per gram of the sample as determined by pyrolysis GC analysis.

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Tokyo, Japan

Norifumi Sumimoto