| 摘要 |
PURPOSE: Provided is a thermoplastic resin composition excellent in extrusion-stability and extrusion-processability, which dose not have the change of extrusion amount, the lack of thickness uniformity, and scratches. CONSTITUTION: The thermoplastic resin composition comprises: 20-60pts.wt. of a graft copolymer obtained by copolymerizing a vinyl cyanide compound and an aromatic vinyl compound into a rubber polymer, wherein the graft copolymer has a graft rate of 50-100% and a weight average molecular weight of 50,000-100,000; 40-80pts.wt. of a copolymer obtained by copolymerizing a vinyl cyanide compound and an aromatic vinyl compound; 0.1-2pts.wt. of a divalent metal compound; 0.1-30pts.wt. of an ultrahigh molecular weight copolymer obtained by copolymerizing a vinyl cyanide compound and an aromatic vinyl compound and having an average molecular weight of 1,000,000-5,000,000.
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