Patent ID: 6692824
Filing Date: 2004-02-17
Classification: B29C,C09D,G02B,Y10S,Y10T

Abstract:
A durable, light-permeable infrared-reflecting body comprising an amorphous base material of light-permeable plastic and a coating layer of 5-40 &mgr;m thickness thereon which permanently adheres to the base material, said light-permeable infrared-reflecting body being transmissive to visible light and reflecting infrared light, and said coating layer comprising a transparent water-insoluble binder and infrared-reflecting particles in an amount of 20-40 wt. % based on said coating layer, said particles being oriented parallel to the surface of the base material, and wherein said infrared-reflecting particles comprise platelet-shaped carriers each having a 60-120 nm thick titanium dioxide layer thereon, said carriers each having a thickness of 200-2000 nm, and a diameter of 5-100 &mgr;m, and wherein the mean diameter of all the carriers is 20-70 &mgr;m, wherein the binder is comprised of a hydrophobic plastic material, and wherein the light-permeable plastic is a polymethyl methacrylate plastic, a polycarbonate plastic, a polystyrene, or a styrene-acrylonitrile copolymer.