| 摘要 |
PROBLEM TO BE SOLVED: To obtain a vinyl chloride-based mass excellent in flexibility and high-speed deformability, capable of adhesive jointing, needing no post processing, by injection molding using an equipment similar to that in the case of conventional rigid polyvinyl chloride. SOLUTION: This vinyl chloride-based mass as molded form with a flexural modulus of 10,000-20,000 kgf/cm<2> is obtained by injection molding of a urethane- grafted vinyl chloride-based resin composition which is prepared by graft copolymerization of 90-70 wt.% of vinyl chloride singly or vinyl chloride plus another copolymerizable monomer to 10-30 wt.% of a thermoplastic polyurethane; wherein the viscosity-average degree of polymerization of the urethane- grafted vinyl chloride based resin is 400-1,200. |
