Acrylic emulsion copolymers for thickening aqueous systems...

Details Acrylic emulsion copolymers for thickening aqueous systems... Acrylic emulsion copolymers for thickening aqueous systems...

C - Chemistry, Metallurgy

08

F

402/125, 31/22,

C08F 246/00 (2006.01) C08F 220/04 (2006.01) C08F 222/20 (2006.01) C08G 18/81 (2006.01) C09D 7/00 (2006.01) C09K 3/00 (2006.01) C09K 8/24 (2006.01) C11D 3/37 (2006.01) C11D 17/00 (2006.01) D06P 1/52 (2006.01) D21H 19/58 (2006.01)

Patent

CA 1270347

Abstract Acrylic emulsion copolymers are prepared by emulsion polymerization of (A) a surfactant monomer, (B) an ?,.beta. -ethylenically unsatruated carboxylic acid monomer, (C) a nonionic ? ,.beta. -ethyenically unsaturated monomer and (D) optionallly a polyethylenically unsaturated cross-linking monomer. The surfactant monomer is prepared by condensing an alcohol or primary amine-containing nonionic surfactant with a monoethylenically unsaturated monoisocyanate. At a low pH the copolymer may be in the form of an aqueous dispersion or latex, but thickens upon neutralization of at least some of the carboxyl groups.

502071

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