C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
400/3056
C08L 27/06 (2006.01) C08F 285/00 (2006.01) C08L 51/04 (2006.01) C08L 51/00 (2006.01)
Patent
CA 1334696
Disclosed is a modifier to be incorporated in a polyvinyl chloride resin, which is a graft copolymer obtained by carrying out, in the presence of 100 parts by weight of a butadiene rubber having a swelling degree of 10 to 50 and an average particle diameter of 0.1 to 0.4 µm, first-stage graft polymerization of 1 to 42 parts by weight of methyl methacrylate and 0 to 5 parts by weight of an alkyl acrylate, second-stage graft polymerization of 10 to 120 parts by weight of styrene and third-stage graft polymerization of 7 to 75 parts by weight of methyl methacrylate and 0 to 20 parts by weight of an alkyl acrylate, the content of the butadiene rubber in the graft copolymer being 35 to 75% by weight. The polyvinyl chloride resin composition having this modifier incorporated therein provides a molded article having excellent impact resistance, solvent resistance, and transparency.
602560
Kishida Kazuo
Kitai Kiyokazu
Ohkage Kenji
Finlayson & Singlehurst
Mitsubishi Rayon Company Ltd.
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