| 摘要 |
PURPOSE:To provide the subject composition readily processed due to its high flowability and excellent in the impact resistance by adding acrylonitrile- butadiene-styrene terpolymer resin and two kinds of specific copolymers to a vinyl chloride resin. CONSTITUTION:The objective composition comprises (A) 100 pts.wt. of a vinyl chloride resin having an average degree of polymerization of 600-2500, (B) 4-15 pts.wt. of acrylonitrile-butadiene-styrene terpolymer resin, (C) 1-7 pts.wt. of a styrene-hydrogenated isoprene copolymer and (D) 1-10 pts.wt. of acrylonitrile- styrene copolymer. A polyvinyl chloride resin and a graft-copolymerized polymer containing 40-80wt.% of butadiene are preferable as the components A and B, respectively. The component C is preferably the copolymer having a styrene/ hydrogenated isoprene weight ratio of 30:70 to 50:50 and a solution viscosity of <=1000cPs in a toluene solution of 20wt.% at 30 deg.C, and the component D is preferably the acrylonitrile-styrene copolymer having an acrylonitrile/styrene ratio of 20-80 to 25-75. |
