Transparent cover layer for transparent glass or plastic substrate

US5030686A · kind A · utility

Assignee

• Isover Saint-Gobain · FR

Inventors

• Gerhard Holzer · Aachen, DE
• Udo Gelderie · Stolberg, DE
• Cornelia Breuer · Aldenhoven, DE

Key dates

• Filing date: May 30, 1989
• Grant date: Jul 9, 1991
• Expiry date: May 30, 2009

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2375/08
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A condensation-inhibiting transparent cover layer of soft elastic polyurethane for viewing windows or other transparent glass or plastic substrates. The reaction mixture for production of the cover layer contains, in addition to a trifunctional polyisocyanate and a trifunctional polyol, a difunctional sulfonated polyether polyol, i.e. one containing sulfonate groups, and a non-ionic tenside in the form of an ethoxylated fatty alcohol and/or an ethoxylated fatty amine.