Cross-linkable polyurethane block copolymers and their use in dispersion binding agent systems

US7074850B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Ulrike Hees · Mannheim, DE
• Sophia Ebert · Mannheim, DE
• Ruediger Sens · Mannheim, DE
• Friedrich-Wilhelm Raulfs · Ludwigshafen, DE
• Hans Bohrmann · Lauffen am Neckar, DE
• Lothar Schulz · Eppstein, DE
• Heinz Heissler · Dillingen/Saar, DE
• Johann Mueller · Affoltern am Albis, CH
• Karl Siemensmeyer · Bischofswerda, DE
• Guenter Renz · Freinsheim, DE

Key dates

• Filing date: Sep 14, 2002
• Grant date: Jul 11, 2006
• Expiry date: Sep 24, 2022

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31551
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to polyurethane block copolymers of general formula (I) to (IV), in which the variables are defined as follows: A represents a polyurethane block, which contains at least one hydrophilic group, B is a hydrophobic polyurethane block, X1, X2 are hydrophilic end groups and n is a whole number from 1 to 20. The invention also relates to the production of cross-linkable dispersion additives from the inventive polyurethane block copolymers and to the use of said cross-linkable dispersion additives for colorant preparations, in particular inks for ink-jet printing.