C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
402/321, 400/904
C08F 220/04 (2006.01)
Patent
CA 1307615
PRODUCTION OF ALKALI-SOLUBLE, CARBOXYL-FUNCTIONAL AQUEOUS EMULSION THICKENERS ABSTRACT There is disclosed a method of carrying out an aqueous emulsion copolymerization to provide an alkali-soluble anionic copolymer having thickening characteristics while minimizing plating and grit problems in which the aqueous emulsion copolymerization of monoethylenically unsaturated monomers comprising from 15% to 50% by weight of carboxyl-functional monomer, at least about 10% by weight of monomer, preferably a urethane monomer, having surfactant characteristics, and the balance of the monomers being selected to provide a water insoluble copolymer, is carried out in the presence of a salt of an aromatic sulfonic acid, such as sodium styrene sulfonate, in an amount of from about 0.1% up to about 6.0%, by weight.
564254
Brizgys Peter V.
Kersten Mark A.
Kravitz Fran K.
Shay Gregory D.
Brizgys Peter V.
Desoto Inc.
Kersten Mark A.
Kravitz Fran K.
Shay Gregory D.
LandOfFree
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