Flexible plastic window shield and process for its production

US5614322A · kind A · utility

Assignee

• Saint-Gobain Vitrage International · FR

Inventors

• Ingrid Musil · Aachen, DE
• Karin Broring · Aachen, DE
• Udo Gelderie · Stolberg, DE
• Gerhard Holzer · Aachen, DE

Key dates

• Filing date: Jan 10, 1994
• Grant date: Mar 25, 1997
• Expiry date: Jan 10, 2014

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31551
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A foldable plastic tail or rear window shield for a car top or hood comprises a polyurethane monolayer. It is produced by pouring or casting a reaction mixture onto a planar casting or pouring substrate. The reaction mixture contains a bifunctional hydroxyl group-containing polyester, a trifunctional polyol, a polyisocyanate from a cycloaliphatic isocyanate urea adduct dissolved in a isophorone diisocyanate and optionally a bifunctional isophorone diisocyanate.