(Meth) acrylic polymer and vinyl chloride resin composition containing the same

Abstract

An object of the present invention is to provide a (meth)acrylic polymer in which the occurrence of air marks and flow marks during forming, in particular, calendering is suppressed and a vinyl chloride-based resin composition containing the same. The present invention provides a (meth)acrylic polymer containing 15 to 65 parts by weight of a polymer (A) having a specific viscosity of 0.90 to 2.00 and containing 70 to 100 weight percent of methyl methacrylate, 0 to 30 weight percent of a (meth)acrylic ester other than methyl methacrylate, and 0 to 10 weight percent of another monomer copolymerizable with these; 20 to 75 parts by weight of a polymer (B) having a specific viscosity of 0.40 or more and less than 0.90 and containing 70 to 100 weight percent of methyl methacrylate, 0 to 30 weight percent of a (meth)acrylic ester other than methyl methacrylate, and 0 to 10 weight percent of another monomer copolymerizable with these; and 1 to 30 parts by weight of a polymer (C) having a specific viscosity of 0.80 to 2.00 and containing 0 to 60 weight percent of methyl methacrylate, 40 to 100 weight percent of a (meth)acrylic ester other than methyl methacrylate, and 0 to 20 weight percent of another monomer copolymerizable with these (the total of the polymer (A), the polymer (B), and the polymer (C) is 100 parts by weight).

Dependencies are inferred from the claim text.