Patent ID: 8664334

Claim:
A resin composition comprising a styrene-based resin (A), a polylactide (B) and a compatibilizer (C), wherein the compatibilizer (C) is at least any one species described below: (C-1) methyl methacrylate polymer; and (C-3) a graft polymer in which 20 to 90 wt % of methyl methacrylate units are grafted to 10 to 80 wt % of a rubbery polymer, wherein the rubbery polymer is selected from polybutadiene, styrene-butadiene copolymer, styrene-butadiene block copolymer, acrylonitrile-butadiene copolymer, butyl acrylate-methyl methacrylate copolymer and polyorganosiloxane-acryl-based copolymer, wherein (C-1) has a weight average molecular weight in a range of 10,000 to 450,000, wherein the compatibilizer (C) is present in an amount of 0.01 to 60 parts by weight based on 100 parts in total of the resin (A) and the polylactide (B), wherein the styrene-based resin (A) is a vinyl copolymer obtained by copolymerizing, relative to 1 to 100 wt % of an aromatic vinyl-based unit (b), 0 to 99 wt % of unsaturated carboxylic acid alkyl ester-based unit (a), 10 to 45 wt % of vinyl cyanide based unit (c), and 0 to 99 wt % of another vinyl-based unit (d) copolymerizable with these components.