Aqueous polyurethane dispersions containing polybutadiene units

US6429254B2 · kind B2 · utility

Assignee

• Solutia Austria GmbH · AT

Inventors

• Markus Schafheutle · Hochheim, DE
• Anton Arzt · Tillmitsch Links der Laßnitz, AT
• Julius Burkl · Graz, AT
• Martina Glettler · Graz, AT
• Ursula Meisner · Graz, AT
• Gerlinde Petritsch · Graz, AT
• Joerg Wango · Wundschuh, AT

Key dates

• Filing date: Jun 15, 2001
• Grant date: Aug 6, 2002
• Expiry date: Jun 15, 2021

Classification

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

Abstract

Storage-stable polyurethane dispersions preparable by reacting polydienes A which carry at least two isocyanate-reactive groups, polyols B which carry at least one acid group, polyfunctional isocyanates C and chain extenders D, wherein the acid groups of the polyols B are neutralized to a fraction of from 60 to 95%, processes for preparing them, and their use for producing elastic coatings.