VINYL CHLORIDE-BASE RESIN COMPOSITION

摘要

A vinyl chloride resin composition comprising: (a) 100 parts by weight of a vinyl chloride resin, (b) 1 to 30 parts by weight of a graft copolymer obtained by graft-polymerizing a monomer ingredient with a crosslinked acryl ic rubbery polymer consisting mainly of an alkyl acrylate, (c) 0.1 to 5 parts b y weight of a methyl methacrylate polymer which is a polymer having a specific viscosity of 0.5 or higher and obtained by a two-stage polymerization proces s in which a monomer mixture containing 0 to 50 wt.% methyl methacrylate is polymerized in the presence of a polymer which comprises 50 to 100 wt.% repeating units derived from methyl methacrylate and a 0.1 g/100-ml solution of which in chloroform has a specific viscosity (.eta.sp) of 0.7 or higher a t 30~C, and (d) 1 t o 20 parts by weight of calcium carbonate. From this composition is obtained a molded object excellent in weatherability, impact resistance, and gloss.