Patent ID: 7968204
Filing Date: 2011-06-28
Classification: C07F,C09D,G02B,Y10T

Abstract:
1. An optical article comprising a transparent substrate, and a high refractive and abrasion-resistant layer coated onto at least one surface of said substrate, wherein said layer results from reacting and curing a mixture containing the following compounds: a first organo-silane compound chosen from thiocarbamate-silane compounds containing at least one terminal alkoxysilane group, or hydrolysates thereof, said thiocarbamate-silane compound resulting from the reaction of a polythiol comprising at least two —SH thiol substituent, with an isocyanato-silane compound represented by the general formula: wherein R an inorganic oxide selected from the group consisting of iron, titanium, cerium, zirconium, antimony, zinc, tin oxides, silica, and composite oxides thereof, a curing catalyst for said organo-silane, and a solvent for said organo-silane.