THERMOPLASTIC RESIN COMPOSITION AND THERMOPLASTIC RESIN MOLDED ARTICLE PREPARED THEREFROM

摘要

The present invention provides a thermoplastic resin composition comprising, in a weight ratio of 35:65 to 70:30: a graft copolymer (A) in which (meth)acrylic ester, a vinyl cyanide compound and an aromatic vinyl compound are graft-polymerized to conjugated diene based rubber latex; and a copolymer (B) of a (meth)acrylic acid ester-aromatic vinyl compound-vinyl cyanide based compound, wherein in the event of irradiating light in a wavelength range of 450 nm to 680 nm, the refractive index difference between the graft copolymer (A) and the copolymer (B) of a (meth)acrylic acid ester-aromatic vinyl compound-vinyl cyanide based compound is less than 0.003, and when measuring the flow index according to ASTM D1238, the flow index is 4.0g/10 min or less. A thermoplastic resin molded article prepared from said thermoplastic resin composition exhibits high environmental stress cracking resistance (ESCR) as well as excellent impact resistance and transparency.