Urethanes containing fluorine and polysiloxane, process for their preparation and their use

US4873306A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Frank Wehowsky · Niedernhausen, DE
• Martin Liebiger · Hofheim, DE

Key dates

• Filing date: Jul 5, 1988
• Grant date: Oct 10, 1989
• Expiry date: Jul 5, 2008

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D06M15/657
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The novel urethanes are composed essentially of fluoroalcohol-isocyanate adducts as the fluoro component and a polysiloxane component, the two components being combined in a structurally specific manner. The novel urethanes are prepared by reacting the fluoroalcohol-isocyanate adducts with the polysiloxane in a molar ratio of 1 to 2:1 at a temperature of 30.degree. to 130.degree. C. The novel urethanes are preferably used for finishing textiles, to which they also impart the property of a soft handle in addition to good hydrophobicity and oleophobicity. They are also suitable for finishing leather, skins and wood.