Title:
EMULSION POLYMERIZATION OF HALOGENATED VINYL OR VINYLIDINE HOMOPOLYMER OR COPOLYMER
Document Type and Number:
Japanese Patent JPS5521487
Kind Code:
A
Abstract:
The present invention relates to a process for preparing vinyl dispersion resins by conducting the polymerization reaction of the vinyl monomer or monomers in an aqueous alkaline medium, using an oil-soluble polymerization initiator, at temperatures preferably below about 48°C, in the presence of an emulsifier system comprising the ammonium salt of a high fatty acid containing from 8 to 20 carbon atoms, at least one long straight chain alcohol containing from 14 to 24 carbon atoms, and a sulfate or sulfonate type soap of C12 to C20 alkyl or aryl hydrocarbons, wherein the ratio of alcohol to emulsifier is equal to or greater than 1.0 and wherein the reaction ingredients are thoroughly mixed, and preferably homogenized, prior to polymerization. The process produces paste reins having improved plastisol foam properties, especially when sodium metabisulfite is added to the polymer recipe or the polymer slurry prior to spray drying. Further, polymer buildup in the reactor is substantially reduced and multiple polymerizations can be run in the reactor without opening the same.
Inventors:
CHIYAARUZU NIIRU BUTSUSHIYU
BERA KARUMAN MIKOFUARUBUI
BERA KARUMAN MIKOFUARUBUI
Application Number:
JP9596079A
Publication Date:
February 15, 1980
Filing Date:
July 27, 1979
Export Citation:
Assignee:
GOODRICH CO B F
International Classes:
C08F14/00; C08F2/00; C08F2/22; C08F2/24; C08F2/26; C08F14/06; (IPC1-7): C08F2/26; C08F14/00
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