C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 27/06 (2006.01) C08F 285/00 (2006.01) C08L 51/00 (2006.01)
Patent
CA 2255207
A vinyl chloride resin composition having a greatly improved processability without lowering the transparency wherein the gelation property of a vinyl chloride resin is improved with greatly decreased generation of ungelled substance; which comprises a vinyl chloride resin and 0.1 to 30 parts by weight of a processing aid per 100 parts by weight of said vinyl chloride resin, wherein said processing aid is a polymer prepared by polymerizing (B) 40 to 94 parts by weight of a monomer mixture comprising 60 to 100 % by weight of methyl methacrylate, 0 to 40 % by weight of at least one monomer selected from the group consisting of an alkyl acrylate and an alkyl methacrylate different from methyl methacrylate and 0 to 10 % by weight of other vinyl monomer copolymerizable therewith, in the presence of a first latex prepared by emulsion-polymerizing (A) 3 to 30 parts by weight of a monomer mixture comprising 0 to 50 % by weight of methyl methacrylate, 50 to 100 % by weight of an alkyl acrylate and 0 to 20 % by weight of other vinyl monomer copolymerizable therewith, and polymerizing (C) 3 to 30 parts by weight of a monomer mixture comprising 0 to 50 % by weight of methyl methacrylate, 50 to 100 % by weight of an alkyl acrylate and 0 to 20 % by weight of other vinyl monomer copolymerizable therewith in the presence of the resulting second latex, the total amount of said mixtures (A), (B) and (C) being 100 parts by weight.
Janssen Karin
Kadokura Mamoru
Miki Yasuhiro
Nakanishi Yasushi
Takaki Akira
Kaneka Belgium N.v.
Kaneka Corporation
Osler Hoskin & Harcourt Llp
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