Heat-resistant copolymer, the heat-resistant thermoplastic resin composition, the production methodological null unsaturated carboxylic acid alkyl ester unit of the resin formation

摘要

PROBLEM TO BE SOLVED: To provide a copolymer which has high degree heat resistance and does not foam, when molded, to provide a resin composition which comprises the copolymer and a rubber-reinforced polymer and has excellent mechanical strengths and moldability, to provide a resin which comprises the polymer and a transparent rubber-reinforced polymer and has excellent transparency, and to provide a molded article comprising the copolymer or one of the resin compositions.;SOLUTION: This heat-resistant copolymer comprises unsaturated alkyl unsaturated carboxylate units, glutaric anhydride units represented by the general formula (1) (R¹ and R² are each identically or differently H or a 1 to 5C alkyl), and, if necessary, other monomer units, and does substantially not contain unsaturated carboxylic acid units in the copolymer.;COPYRIGHT: (C)2003,JPO