Thickener

Abstract

Abstract Liquid thickeners based on diurethanes are prepared by alkoxylation of monohydric alcohols having 8 to 30 carbon atoms using a mixture of ethylene oxide and propylene oxide with a molar ethylene oxide:propylene oxide ratio in the mixture of from about 30:70 to 90:10 and using from 20 to 200 mol of alkylene oxides per mol of alcohol, and reacting the resultant polyether in a molar ratio of from 1:0.7 to 1:0.25 with a diisocyanate. A particularly suitable diisocyanate is hexamethylene diisocyanate. The thickeners can be used, in particular, for thickening aqueous systems. By mixing two or more such diurethanes, thickeners having a very wide variety of property profiles can be prepared. <IMAGE>

Inventors

• 👤 Albert Dr. Van De Berg
• 👤 Elke Dr. Philippsen
• 👤 Henk Dr. Bruil

Bibliographic Details