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AssigneeLG Chem, Ltd.
InventorsSeonho Kong, Gun Ko, Sun Mo Son
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Provided is a thermoplastic resin composition including 30 to 50 wt % of a polybutylene terephthalate resin (A); 8 to 20 wt % of a polyethylene terephthalate resin (B); 3 to 15 wt % of an acrylate-aromatic vinyl compound-vinyl cyanide compound graft copolymer (C); 3 to 15 wt % of an aromatic vinyl compound-vinyl cyanide compound copolymer (D); 25 to 40 wt % of glass fiber (E); 0.15 to 1 wt % of a carbodiimide-based compound (F); 0.5 to 1.5 wt % of an epoxy compound (G); and 0.25 to 1.2 wt % of a hindered amine-based light stabilizer (H), a method of preparing the thermoplastic resin composition, and a molded article including the composition. The thermoplastic resin composition has excellent impact strength, tensile and flexural strength, and flexural modulus, and excellent heat resistance; has excellent flexural strength retention rate after the Air-HAST test; and satisfies product reliability required by automotive exterior materials and materials for electric/electronic parts.
A thermoplastic resin composition, comprising:
A method of preparing a thermoplastic resin composition, comprising melt-kneading and extruding, at 200 to 300° C. and 100 to 300 rpm, 30 to 50% by weight of a polybutylene terephthalate resin (A), 8 to 20% by weight of a polyethylene terephthalate resin (B), 3 to 15% by weight of an acrylate-aromatic vinyl compound-vinyl cyanide compound graft copolymer (C), 3 to 15% by weight of an aromatic vinyl compound-vinyl cyanide compound copolymer (D), 25 to 40% by weight of glass fiber (E), 0.15 to 1% by weight of a carbodiimide-based compound (F), 0.5 to 1.5% by weight of an epoxy compound (G), and 0.25 to 1.2% by weight of a hindered amine-based light stabilizer (H),
Dependencies are inferred from the claim text.