C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 27/06 (2006.01) C08F 265/06 (2006.01) C08L 51/00 (2006.01)
Patent
CA 2255164
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) 70 to 97 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 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, the total amount of said mixtures (A) and (B) being 100 parts by weight, and said polymer has a specific viscosity of at least 1 measured at 30°C with respect to a solution of 0.4 g of said polymer in 100 ml of benzene.
Janssen Karin
Kadokura Mamoru
Miki Yasuhiro
Nakanishi Yasushi
Takaki Akira
Kaneka Belgium N.v.
Kaneka Corporation
Osler Hoskin & Harcourt Llp
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