Additive for hydraulically setting compounds

US9777133B2 · kind B2 · utility

Assignee

• CONSTRUCTION RESEARCH & TECHNOLOGY GMBH · DE

Inventors

• Torben Gädt · Traunstein, DE
• Harald Grassl · Feichten, DE
• Alexander Kraus · Evenhausen, DE
• Luc Nicoleau · Fleury-les-Aubrais, FR
• Martin Winklbauer · Burgkirchen an der Alz, DE

Key dates

• Filing date: Feb 26, 2014
• Grant date: Oct 3, 2017
• Expiry date: Mar 11, 2034

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K2003/329
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to an additive for hydraulically setting compositions, comprising a colloidally disperse preparation of at least one water-soluble salt of a polyvalent metal cation, at least one compound capable of releasing an anion which forms a sparingly soluble salt with the polyvalent metal cation, and at least one polymeric dispersant which comprises anionic and/or anionogenic groups and polyether side chains.