| abstract |
PURPOSE: A composition having improved impact resistance, slightly causing thermal decomposition and heat coloring during molding and processing, comprising a composition consisting of a specific thermoplastic resin and a specific rubber reinforced resin. n CONSTITUTION: (A) A thermoplastic resin is blended with (B) a rubber reinforced resin obtained by grafting a nitrile monomer or an aromatic vinyl monomer onto elastomer having ≤0°C glass transition temperature in a blend ratio of the component A/B=5/95W95/5. When the thermoplastic resin A is obtained by subjecting 50W80wt% aromatic vinyl, 10W30% vinyl cyanide and 5W40wt% maleimide monomer shown by the formula (R is H, 1W4C alkyl, cyclohexyl, or aryl) to emulsion polymerization, ≥30wt% aromatic vinyl is fed to a reaction system before the starting of polymerization. When the three components are left, the residue is added to the reaction system, the pH of the aqueous phase at the beginning of the polymerization is kept at 3W9 and the polymerization is carried out by a redox catalyst using an oil-soluble organic peroxide. n COPYRIGHT: (C)1986,JPO&Japio |