Dispersing agent containing copolymer mixture

US8461232B2 · kind B2 · utility

Assignee

• CONSTRUCTION RESEARCH & TECHNOLOGY GMBH · DE

Inventors

• Mario Vierle · Günzburg, DE
• Klaus Lorenz · Zangberg, DE
• Silke Flakus · Ebersberg, DE
• Petra Wagner · Trostberg, DE
• Christian Scholz · Neustadt an der Weinstraße, DE
• Barbara Wimmer · Tacherting, DE
• Manfred Bichler · Trostberg, DE
• Angelika Hartl · Emertsham, DE
• Martin Winklbauer · Burgkirchen an der Alz, DE

Key dates

• Filing date: Nov 25, 2009
• Grant date: Jun 11, 2013
• Expiry date: Nov 25, 2029

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L2205/02
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The invention relates to a polymer composition containing 3 to 90% by weight of a copolymer H and 3 to 90% by weight of a copolymer K, the copolymers H and K each having polyether macromonomer structural units and acid monomer structural units, which are present in the copolymers H and K in each case in a molar ratio of 1:20 to 1:1, and at least 20 mol % of all structural units of the copolymer H and at least 25 mol % of all structural units of the copolymer K being present in each case in the form of acid monomer structural units, at least 60 mol % of the polyether macromonomer structural units of the copolymer H being represented by the isoprenol polyether derivative structural units and at least 60 mol % of the polyether macromonomer structural units of the copolymer K being represented by the vinyloxy polyether derivative structural units.