| 摘要 |
PROBLEM TO BE SOLVED: To obtain a chlorinated vinyl chloride-based resin composition capable of markedly increasing the extrusion volume in extrusion molding without sacrificing the impact strength, heat resistance, tensile strength or heat stability of the molded products, especially, pipes. SOLUTION: This composition is obtained by including 100 pts.wt. of a chlorinated vinyl chloride having a polymerization degree of 600-1,500 before chlorination and a chlorination degree of 62-70 wt.%, 3-15 pts.wt. of MBS particles wherein the content of butadiene is less than 60 wt.% and the content of styrene is more than 30 wt.% in the whole particles, and 1-5 pt(s).wt. of chlorinated polyethylene having a chlorine content of 10-50 wt.%. |
