| 摘要 |
PURPOSE: To improve heat resistance by a method wherein thermo-plastic resin composition is used as a rigid material, and a soft resin composition is used as a soft material. CONSTITUTION: An extrusion molded product is a resin composition composed of 90-20wt.% of vinyl chloride resin constituent, 30-100wt.% of another constituent, and 0-70wt.% of the third constituent. It is anα-methyl-styrene copolymer composed of 65-85wt.% ofα-methylstyrene constituent, 15-35wt.% of vinyl cyanide compound, and 0-20wt.% of another vinyl compound copolymerized therewith. It is a graft copolymer obtained by copolymerizing 20-70wt.% of a mixture composed of 50-80wt.% of aromatic vinyls constituent, 15-35wt.% of vinyl cyanide compound, and 0-30wt.% of another vinyl compound copolymerized therewith under the existence of 80-30 pts.wt. pf rubber of at most 0 deg.C glass transition temperature. A thermoplastic resin composition A composed of 10-80wt.% of the constituent and a soft resin composition B composed of 5-75wt.% of vinyl chloride resin, 5-70wt.% of partially crosslinked acrylonitrile-butadiene copolymer, and 10-65wt.% of plasticizer are integrally extruded. |
