THERMOPLASTIC RESIN COMPOSITION FOR VEHICLE LAMP HOUSINGS

摘要

Provided is a thermoplastic resin composition for vehicle lamp housings which exhibits excellent balance among physical properties and excellent gloss. The thermoplastic resin composition is advantageous in that not only a molded product obtained in an early molding stage but also a molded product obtained after repeated molding operations can yield, via direct vapor deposition, an article that exhibits excellent diffuse reflectance. Also provided are molded products. A thermoplastic resin composition for vehicle lamp housings which comprises 5 to 80 parts by weight of (A) a graft copolymer that is obtained by graft-polymerizing (a-2) at least one monomer selected from the group consisting of aromatic vinyl monomers, vinyl cyanide monomers, (meth)acrylic ester monomers and maleimide monomers in the presence of (a-1) an acrylate-based rubbery polymer having a weight-mean particle diameter of 100 to 400nm, and 20 to 95 parts by weight of (B) a (co)polymer that is obtained by polymerizing (a-2) at least one monomer selected from the group consisting of aromatic vinyl monomers, vinyl cyanide monomers, (meth)acrylic ester monomers and maleimide monomers (with proviso that the sum total of the components (A) and (B) is 100 parts by weight), characterized in that: the total content of volatile substances at 260°C is 0.7wt% or less relative to the whole composition; and the total content of oligomers having weight-average molecular weights of 200 to 1000 is 0.3wt% or less relative to the whole composition.