THERMOPLASTIC RESIN COMPOSITION EXCELLENT IN FORMING PROCESSABILITY

摘要

PROBLEM TO BE SOLVED: To obtain a copolymer improving gas emission caused to high temperature retention in a fabrication and happening of silver or reduction of gloss on the surface of a molded article, and a thermoplastic resin composition excellent in thermal resistance and impact resistance. SOLUTION: The copolymer is obtained by an emulsion polymerization system using an emulsifier having weight decrease rate of <=25% determined in a temperature up test by a TGA at 50-350 deg.C, at pH 5.0-9.0, and the thermoplastic resin composition comprises the copolymer and a graft copolymer obtained by graft polymerizing a vinyl monomer to the copolymer and a diene based rubber.