| 摘要 |
An expandable vinyl chloride resin composition which can provide foamed articles having a greatly enhanced expansion ratio without remarkably lowering the surface property and strength by the use of thermally decomposable blowing agents without the use of organic solvent blowing agents, and which comprises 100 parts by weight of a vinyl chloride resin, 0.5 to 30 parts by weight of, as a processing aid, a two stage (meth)acrylic ester polymer having a specific viscosity of at least 0.5 (0.1 % chloroform solution, 30° C.) prepared by polymerizing a monomer component containing as a main component a monomer selected from acrylic esters and methacrylic esters excepting methyl methacrylate in the presence of a latex of a methyl methacrylate polymer having a specific viscosity of at least 0.7, 0.3 to 25 parts by weight of a thermally decomposable inorganic blowing agent, 0.01 to 15 parts by weight of a thermally decomposable organic blowing agent and 0 to 20 parts by weight of a filler.
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