Patent ID: 6379808
Filing Date: 2002-04-30
Classification: B32B,G03C,Y10S,Y10T

Abstract:
A durable photochromic film comprising:a coloring material layer and a phototransmissive deposition film laminated to the coloring material layer; the coloring material layer comprising a base polymer and a photochromic material, wherein said coloring material layer has a thickness from 5 to 100 microns, and wherein said base polymer is selected from the group consisting of styrene-ethylene-butylene-styrene and styrene-ethylene-propylene-styrene; the phototransmissive deposition film comprising a base and a deposition layer adhered to the base, the base comprising a phototransmissive plastic film, wherein the phototransmissive plastic film comprises a material selected from the group consisting of polyester, polyethylene, polypropylene and nylon and the deposition layer is selected from the group consisting of indium tin oxide and titanium oxide.