ACRYLAMID-COPOLYMERS SUITABLE AS THICKENING AGENT FOR AQUEOUS SYSTEMS AND AQUEOUS COMPOSITIONS CONTAINING THEM

摘要

Thickening agents for aqueous systems are disclosed comprising water-soluble addition polymers of acrylamide and an N-substituted acrylamide in which the substituent is a hydrocarbyl group of at least 6 carbon atoms, or such a group attached to the nitrogen atom via a polyoxyalkylene chain. Preferred substituents are alkyl groups containing 6-36 carbon atoms. The polymers are useful thickening agents for aqueous systems, particularly multiphase systems such as aqueous emulsion polymers and aqueous pigment dispersions, and especially aqueous emulsion paints and aqueous printing inks.