Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1990-03-22
1993-02-23
Seidleck, James J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525239, 525 78, 525 80, 525 83, 525 86, C08G 6348, C08G 6391, C08L 2706
Patent
active
051887517
ABSTRACT:
A vinyl chloride resin composition having an improved impact resistance with a good transparency which includes (A) a graft copolymer reinforcing agent prepared by emulsion-polmerizing 15 to 35 parts by weight of a monomer mixture in the presence of 85 to 65 parts by weight of a butadiene homopolymer or copolymer having a butadiene content as high as 82% by weight or more, said monomer mixture containing of 50 to 95% by weight of an aromatic vinyl monomer such as styrene, 0.1 to 40% by weight of a vinyl cyanide monomer such as acrylonitrile and 0 to 40% by weight of other vinyl monomer copolymerizable therewith, and (B) a vinyl chloride resin. The butadiene homo- or copolymer may be treated prior to the emulsion polymerization, in order to prevent the produced graft copolymer particles from coagulating into a massive material, by reacting a small amount of a crosslinking monomer and optionally an alkyl acrylate or methacrylate in the presence of the butadiene homo- or copolymer in the form of an aqueous latex.
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Hosoi Hideki
Iguchi Hirokazu
Mori Hiroto
Suzuki Satoshi
Takaki Akira
Clark W. R. H.
Kanegafuchi Kagaku Kogyo & Kabushiki Kaisha
Seidleck James J.
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