| 摘要 |
PURPOSE:To provide the title compsn. having excellent heat resistance and (falling weight) impact strength, consisting of a heat-resistant thermoplastic resin, a graft copolymer and a high-rubber graft copolymer. CONSTITUTION:10-80pts. (by weight; the same applies hereinbelow) heat- resistant thermoplstic resin (A) obtd. by polymerizing a monomer mixture of 10-90% alpha-methylstyrene and/or maleimide monomer, 10-50% vinyl cyanide monomer and 80-0% monomer copolymerizable therewith, 10-89pts. graft polymer (B) obtd. by emulsion-polymerizing 85-15pts. monomer mixture of an arom. monovinyl monomer and a vinyl cyanide monomer in the presence of 15-75pts. diene rubbery polymer, and 1-20pts. high-rubber graft copolymer(C) obtd. by polymerizing 55-15pts. monomer mixture of 35-80% (meth) acrylate ester, 65-20% arom. vinyl monomer and 0-20% copolymerizable monomer in the presence of 45-85pts. rubbery polymer, are blended together.
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