To obtain a resin composition which can be continuously molded for a long time by mixing a vinyl chloride resin with a specified amount of colorant containing a dispersant comprising calcium stearate and a vinyl chloride resin having a specified degree of polymerization.
There is provided a resin composition prepared by mixing 100 pts.wt. vinyl chloride resin with 0.01-2 pts.wt. colorant, wherein the colorant comprises a pigment, 2-15 wt.% calcium stearate and 30-50 wt.% vinyl chloride resin having an average degree of polymerization of 500-2,000. The vinyl chloride resin is obtained by copolymerizing 80-100 wt.% n-butyl acrylate which can give a homopolymer having a glass transition temperature of below -20°C with at most 20 wt.% monomer such as ethyl methacylate which can give a homopolymer having a glass transition temperature of -20°C or above and a polyfunctonal monomer such as ethylene glycol di(meth)acrylate to prepare an acrylic copolymer and grafting 90-97 wt.% vinyl chloride onto 3-10 wt.% above acrylic copolymer.
TOMITA HIROSHI
YAMANE AYUMI
