THERMOPLASTIC RESIN COMPOSITION HAVING EXCELLENT THERMAL STABILITY

摘要

A thermoplastic resin composition is provided to improve thermal stability while not degrading the properties such as impact strength, fluidity, heat resistance, and tensile strength. A thermoplastic resin composition with excellent thermal stability comprises base resin 100.0 parts by weight, trimethylolpropane 0.01~1 parts by weight, and phosphate-based thermal stabilizer 0.01~1 parts by weight. The base resin is made of a graft copolymer resin 20~50 weight% and a vinyl cyanide-aromatic vinyl copolymer 50~80 weight%. The graft copolymer is prepared through an emulsion graft polymerization method by using a rubber elastomer with an average rubber particle diameter of 0.25~0.40 micron.