Spreading pastes containing polyurethane plastics and a process for the production of polyurethane coatings permeable to water vapor

US4743470A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Klaus Nachtkamp · Cologne, DE
• Wilhelm Thoma · Leverkusen, DE
• Josef Pedain · Cologne, DE
• Walter Schroer · Leverkusen, DE
• Rolf Langel · Leverkusen, DE

Key dates

• Filing date: Feb 18, 1986
• Grant date: May 10, 1988
• Expiry date: Feb 18, 2006

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T442/2893
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

This invention relates to spreading pastes containing polyurethanes which are prepared from special synthesis components selected from the group of silicone resins, polyethers or polyesters containing aromatic segments or perfluorocarbon resins. The spreading pastes also contain organic solvents and optionally non-solvents for the polyurethanes so that when the coatings are used to coat textile substrates according to the direct or transfer process, the coatings may be cured based on the principle of evaporation coagulation.