Copolymer comprising polyether side chains and hydroxyalkyl and acid structural units

US8519030B2 · kind B2 · utility

Assignee

• CONSTRUCTION RESEARCH & TECHNOLOGY GMBH · DE

Inventors

• Klaus Lorenz · Zangberg, DE
• Gerhard Albrecht · Prien am Chiemsee, DE
• Silke Flakus · Ebersberg, DE
• Alexander Kraus · Evenhausen, DE
• Helmut Mack · Ludwigshafen, DE
• Petra Wagner · Trostberg, DE
• Christian Scholz · Neustadt an der Weinstraße, DE
• Barbara Wimmer · Tacherting, DE
• Angelika Hartl · Emertsham, DE
• Martin Winklbauer · Burgkirchen an der Alz, DE

Key dates

• Filing date: Jan 12, 2009
• Grant date: Aug 27, 2013
• Expiry date: Feb 4, 2029

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B2103/408
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The invention relates to a copolymer which is suitable as a superplasticizer for hydraulic binders and comprises 5 to 55 mol % of an isoprenol polyether derivative structural unit, 2 to 90 mol % of an acrylic acid derivative structural unit and 2 to 90 mol % of a hydroxyalkyl acrylate structural unit.