Polyurethane urea solutions

US7425516B2 · kind B2 · utility

Assignee

• Bayer MaterialScience AG · DE

Inventors

• Jürgen Köcher · Cologne, DE
• Gerald Kurek · Leverkusen, DE
• Holger Casselmann · Odenthal, DE
• Jürgen Urban · Recklinghausen, DE
• Thomas Feller · Solingen, DE

Key dates

• Filing date: Feb 17, 2006
• Grant date: Sep 16, 2008
• Expiry date: Apr 29, 2026

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T442/2221
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

This invention relates to solutions of polyurethaneureas in γ-butyrolactone or mixtures of γ-butyrolactone with toxicologically acceptable organic solvents. A process for coating substrates using these polyurethaneurea solutions, and substrates coated by said process are also provided. The substrates coated according to the invention are preferably textile products or leather, but materials such as wood or concrete can also be coated according to the invention.