Comb polymers and their use as additives for preparations of mineral binders

US8022120B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Stefan Becker · Mannheim, DE
• Markus Klumpe · Mannheim, DE
• Joachim Pakusch · Ludwigshafen, DE
• Thomas Goetz · Leimersheim, DE
• Christian Knoll · Schifferstadt, DE
• Rolf Gulden · Bischofswerda, DE

Key dates

• Filing date: Nov 6, 2006
• Grant date: Sep 20, 2011
• Expiry date: Nov 8, 2027

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B2103/32
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The present invention relates to novel comb polymers which bear poly-C2-C4-alkylene ether side chains A and functional groups B which at a pH of >12 are present in the form of anionic groups on a carbon backbone and also the salts of such comb polymers. The invention also relates to the use of these comb polymers as additives in preparations comprising a mineral binder. The polyalkylene ether side chains A have the following formula:*—U—(C(O))k—X-(Alk-O)n—Y—Z  A.