Patent ID: 6479573
Filing Date: 2002-11-12
Classification: C08J,C08L,C09D,C09J,C09K

Abstract:
A process for thickening an aqueous system comprising adding to the aqueous system an aqueous fluid suspension comprising a water-soluble synthetic associative thickener polymer, a water-soluble carbon containing salt selected from the group consisting of sodium and potassium salts of aliphatic and aromatic carboxylic acid and sodium and potassium carbonate and water, whereinthe polymer is selected from the group consisting of hydrophobically modified polyether-polyurethanes, hydrophobically modified polyether-polyurethanes bearing terminal hydrophilic groups, hydrophobically modified polyacrylates, hydrophobically modified polyether-polyols, hydrophobically modified aminoplast-polyethers and hydrophobically modified poly(acetal- or ketal-polyethers) comprising a backbone of poly(acetal- or ketal-polyether) which has ends that are capped with hydrophobic groups independently selected from the group consisting of alkyl, aryl, arylalkyl, alkenyl, arylalkenyl, cycloaliphatic, perfluoroalkyl, carbosilyl, polycyclyl, and complex dendritic groups wherein the alkyl, alkenyl, perfluoroalkyl, and carbosilyl hydrophobic groups comprise 1 to 40 carbons, and the aryl, arylalkyl, arylalkenyl, cycloaliphatic and polycyclyl hydrophobic groups comprise 3 to 40 carbons.