THERMOPLASTIC RESIN COMPOSITION HAVING GOOD IMPACT INTENSITY AND HEAT RESISTANCE

摘要

PURPOSE: A thermoplastic resin composition is provided to improve impact and heat resistances and to be useful for exteriors and parts of the electric and electronic instruments. CONSTITUTION: The thermoplastic resin composition comprises (A) 40-70% by weight of rubber reinforced copolymer; (B) 20-40% by weight of rubber-modified styrene-containing graft copolymer; (C) 5-30% by weight of styrene-based copolymer containing 20-30% of acrylonitrile; and (D) 1-20% by weight of styrene-based copolymer containing 10-15% of acrylonitrile. The rubber reinforced styrene copolymer(A) is high impact polystyrene(HIPS).