| 摘要 |
PROBLEM TO BE SOLVED: To obtain a vinyl chloride-based resin composition capable of giving a molded form with high impact resistance and durability such as fatigue strength. SOLUTION: This vinyl chloride-based resin composition is obtained by compounding 100 pts.wt. of a vinyl chloride-based resin with 0.5-7 pt(s).wt. of a thermal stabilizer, 0.2-5 pt(s).wt. of a lubricant and 0.5-7 pt(s).wt. of a processing auxiliary; meanwhile, the vinyl chloride-based resin is produced by graft copolymerization, to an acrylic copolymer formed by copolymerization between 100 pts.wt. of an acrylic monomer component containing >=50 wt.% of an alkyl (meth)acrylate monomer whose homopolymer has a secondary transition temperature of -140 to -20 deg.C and 0.01-30 pt(s).wt. of a polyfunctional monomer component, of a vinyl chloride-based polymer 2,000-4,000 in average polymerization degree so as to be 4-20 wt.% in the acrylic copolymer content. The other objective molded form is obtained from the above composition.
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