초록

Copolymers of acrylic acid and nonionic surfactant acrylates have been found to be useful thickening agents for both aqueous solutions and water/liquid hydrocarbon emulsions.

대표청구항 ▼

A normally solid, base-neutralized copolymer having copolymerized therein about 90 to about 99 mole percent of a carboxyl-containing, ethylenically unsaturated hydrocarbon and about 1 to about 10 mole percent of a nonionic surfactant acrylate having the formula: [Figure] wherein R is hydrogen or met

A normally solid, base-neutralized copolymer having copolymerized therein about 90 to about 99 mole percent of a carboxyl-containing, ethylenically unsaturated hydrocarbon and about 1 to about 10 mole percent of a nonionic surfactant acrylate having the formula: [Figure] wherein R is hydrogen or methyl, R′is a hydrophobe selected from the group consisting of alkyl－O－, alkyl－NH－, and alkyl－CO－, where the alkyl contains 4 to about 30 carbon atoms, A is a divalent radical selected from the group consisting of oxyethylene units or mixed oxyalkylene units having the general formula: －OCnH2n－ wherein n is an integer having values from 2 to 4 and x is an integer having values of about 5 to about 40, said surfactant acrylate having an HLB value of about 10 to about 19.