Adhesive in preparation of laminates

USRE34523E · kind E · reissue

Assignee

• Saint-Gobain Vitrage · FR

Inventors

• Gerard Daude · Villenave-d'Ornon, FR
• Philippe Girard · Margny-lès-Compiègne, FR

Key dates

• Filing date: Feb 1, 1990
• Grant date: Jan 25, 1994
• Expiry date: Feb 1, 2010

Classification

• Technology area (CPC —): General

Abstract

In the manufacture of a 2-ply sheet of the type which includes on one surface thereof a self-healing polymeric material and on the other surface an adhesive polymeric material capable of adhering at elevated temperatures to a glass or plastic surface, the improvement comprising forming said adhesive polymeric material from a blocked polyurethane or a water soluble or water dispersible polyurethane, and preferably from a polyurethane that has blocked NCO groups and is water soluble or water dispersible.