THERMOPLASTIC RESIN COMPOSITION HAVING EXCELLENT IMPACT STRENGTH

摘要

PURPOSE: A thermoplastic resin composition having improved compatibility and excellent impact resistance at low temperature, chemical resistance, formability and heat resistance is provided. CONSTITUTION: The thermoplastic resin composition comprises: (A) 10 to 90 parts by weight of polyamide resin; (B) 1 to 70 parts by weight of a first vinyl graft copolymer obtained by graft polymerization of a rubbery polymer(b1) having an average particle diameter of 0.2 to 1.0 microns with a monomer mixture(b2) consisting of an aromatic vinyl monomer(b21) and a vinyl cyanide monomer(b22); (C) 1 to 50 parts by weight of a second vinyl graft copolymer obtained by graft polymerization of a rubbery polymer(c1) having an average particle diameter of 0.01 to 0.2 microns with a monomer mixture(c2) consisting of an aromatic vinyl monomer(c21) and a vinyl cyanide monomer(c22); (D) 0 to 20 parts by weight of a vinyl copolymer obtained by copolymerization of an aromatic vinyl monomer(d1) with a vinyl cyanide monomer(d2) and another vinyl monomer(d3) copolymerizable with them; and (E) 1 to 30 parts by weight of a maleimide based copolymer.