Patent ID: 9440419
Filing Date: 2016-09-13
CPC Classification: B32B,C08G,G03C,Y10T

Claim Text:
1. A method of making a photochromic polyurethane laminate comprising: (a) forming a photochromic polyurethane composition from the steps comprising: (b) forming a photochromic polyurethane film from said photochromic polyurethane composition; (c) forming a polyurethane primer by reacting an isocyanate-terminated prepolymer that is distinct from the isocyanate-terminated prepolymer employed to form the photochromic polyurethane composition with at least one component selected from a group consisting of a hydroxyl-terminated chain extender and a hydroxyl-terminated crosslinking agent; (d) coating a first side of a first transparent resin sheet and a first side of a second transparent resin sheet with the polyurethane primer; and (e) laminating said photochromic polyurethane film between the first sides of said first and said second transparent resin sheets.