Acrylate-Styrene-Acrylonitrile Resin Composition Having Excellent Thermochromic Resistant Property Under High Temperature

摘要

The present invention (A) an acrylic graft copolymer of 20 to 50% by weight; (B) a molecular weight of the different two kinds of vinyl cyanide-aromatic vinyl copolymer of 20 to 50% by weight; And (C) relates to alpha-methyl-styrene terpolymer of 30 to high temperature heat discoloration properties are excellent ASA resin composition containing 50 wt.%, ASA resin composition of the present invention has a weight average molecular weight (Mw) of 130,000 to 150,000 the high molecular weight vinyl cyanide - aromatic vinyl copolymer (b1) and the weight average molecular weight (Mw) of 80,000 to 100,000 in the low molecular weight vinyl cyanide - aromatic vinyl copolymer and the aromatic vinyl copolymer (b2) 2 species of vinyl cyanide consisting of vinyl cyanide compounds 20 to 40% by weight of styrene monomer, 10 to 30 wt%, and alpha-methyl styrene maintain 40 to 70 styrene-alpha-methyl-copolymer in wt.% based 3 won introducing copolymer impact strength, flexibility, weather resistance, and an injection ASA is a resin composition improved in heat discoloration properties and high temperature stability.