Patent ID: 6291024
Filing Date: 2001-09-18
Classification: B05D,D07B,E01D,Y10T

Abstract:
A process for producing a coating on a metal surface, which coating comprises at least one layer of polyurethane formed on the metal surface, at least one layer of thermoplastic polymer, and a binder between the polyurethane layer and the thermoplastic polymer layer, the process comprising:a) forming a polyurethane layer on the metal surface during a polymerization of at least one polyol with at least one polyisocyanate, and optionally a chain lengthener;b) optionally continuing the polymerization by heating;c) heating the external surface of the layer of the polyurethane;d) covering the layer of polyurethane with the binder;e) forming the layer of thermoplastic polymer; and(f) subsequently cooling the coating.