Patent ID: 8399094

Claim:
A laminated article comprising: (a) at least one pre-formed layer of at least one cured polyurethane comprising a reaction product of components comprising: (i) about 1 equivalent of at least one polyisocyanate; (ii) about 0.05 to about 0.9 equivalents of at least one branched polyol having 3 to 18 carbon atoms and at least 3 hydroxyl groups; (iii) about 0.1 to about 0.95 equivalents of at least one diol having 2 to 18 carbon atoms, and (iv) less than about 2 weight percent of amine curing agent and less than about 5 weight percent of polyester polyol, polycarbonate polyol or polyether polyol on a basis of total weight of the components; wherein upon mixing, the reaction components are maintained at a reaction temperature of at least about 110° C. for at least about 10 minutes, degassed, and reacted at a temperature of at least about 110° C. for at least about 6 hours, (b) at least one layer of a substrate selected from the group consisting of paper, glass, ceramic, wood, masonry, textile, metal or organic polymeric material and combinations thereof, at least one of the pre-formed polyurethane layers being directly laminated to at least one of the substrate layers to form the laminated article, wherein the laminated article is selected from the group consisting of optical articles, optical lenses, photochromic articles, photochromic lenses, windows, transparencies, windshields, sidelights, backlights, aircraft transparencies, ballistic resistant articles, windmill components, glazings, exterior viewing surfaces of liquid crystal displays, cathode ray tubes, films, sheeting, conductive films, microwave absorbing films, low resistance films, blast resistant panels, bullet resistant panels, and radomes.