Water-soluble or water-swellable, associatively thickening copolymers containing sulfo groups, method for producing the same and use thereof

US7238760B2 · kind B2 · utility

Assignee

• CONSTRUCTION RESEARCH & TECHNOLOGY GMBH · DE

Inventors

• Michael Schinabeck · Garching bei München, DE
• Gerhard Albrecht · Prien am Chiemsee, DE
• Alfred Kern · Schneeberg, DE
• Manfred Schuhbeck · Trostberg, DE
• Michaela Melzer · Feichten, DE

Key dates

• Filing date: Aug 2, 2001
• Grant date: Jul 3, 2007
• Expiry date: Aug 2, 2021

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F220/585
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to water-soluble or water-swellable copolymers which contain sulfo groups and which are based on (meth)acrylamide-alkylsulfonic acids and (meth)acrylamide or N-vinyl compounds, and to their use as additives for aqueous construction materials systems or for water-based paint and coating systems. The inventive copolymers also represent water retention agents which are highly effective, even when used in relatively small quantities, and which are highly compatible in construction material and paint systems of this type.