Ionically modified pur spreading pastes and their use

US4728542A · 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
• Klaus Noll · Cologne, DE

Key dates

• Filing date: Jun 13, 1986
• Grant date: Mar 1, 1988
• Expiry date: Jun 13, 2006

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C14C11/006
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention is directed to the preparation of optionally pigmented spreading paste based on multiphase mixtures of ionically-modified polyurethanes and/or polyurethane ureas which are prepared from special synthesis components based on silicone resins, aromatic hydroxypolyethers, aromatichydroxy polyesters, and perfluorocarbon resins, the multiphase mixtures additionally containing water and organic solvents for the polyurethanes and/or polyurethane ureas. The present invention is also directed to the preparation of these optionally pigmented spreading pastes and to their use for the production of coatings permeable to water vapor on fabric or leather substrates by the direct or transfer method using the technique of evaporation.