Copolymers as thickeners and modifiers for latex systems

Details Copolymers as thickeners and modifiers for latex systems Copolymers as thickeners and modifiers for latex systems

C - Chemistry, Metallurgy

07

C

402/372, 260/468

C07C 271/10 (2006.01) C08F 226/02 (2006.01) C08L 39/00 (2006.01)

Patent

CA 1297124

Abstract A thickened aqueous copolymer solution useful for thickening and improving the properties of latex systems comprising a copolymer having as monomeric units: about 79-99 percent of a (meth)acrylic acid salt of sodium, potassium, or ammonium; about 0-20 percent of (meth)acrylic acid; about 0-20 percent of a lower alkyl ester of (meth)acrylic acid; about 1-21 percent of surfactant units selected from the reaction product of a monoethylenically unsaturated monoisocyanate with a nonionic surfactant having hydroxyl or amine functionality; or an ester of a monoethylenically unsaturated dicarboxylic acid, with a polyoxalkylene alkyl ether or a polyoxyalkylene sorbitan ester, and about 0-1 percent of a copolymerizable polyethylenically unsaturated monomer, said percentages being by weight based on the total weight of monomeric units in said copolymer.

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