Patent ID: 7001642
Filing Date: 2006-02-21
Classification: C09D,C23C,G02B,Y10T

Abstract:
1. A process for providing an abrasion resistant coating on the substrate wherein the abrasion resistant coating has a controlled tintability and a refractive index substantially corresponding to the refractive index of the substrate, the process comprising: applying to at least one surface of a substrate an effective amount of a coating composition to provide a substantially uniform coating of the coating composition on the substrate, the coating composition comprising an aqueous-organic solvent mixture containing hydrolysis products and partial condensates of an epoxy functional silane, a metal oxide composite colloid, a disilane and a carboxylic acid functional compound wherein the disilane is represented by the formula (R curing the coating composition to provide the substrate with a cured coating having controlled tintability and a refractive index substantially corresponding the refractive index of the substrate.