Composition for providing an abrasion resistant coating on a...

Stock material or miscellaneous articles – Composite – Of silicon containing

Reexamination Certificate

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C106S287130, C106S287160, C524S366000, C524S386000, C524S430000, C524S588000, C524S783000, C524S786000, C524S789000, C528S026000, C528S034000, C528S035000

Reexamination Certificate

active

07014918

ABSTRACT:
The present invention discloses articles containing a coating composition, as well as methods of making and using the compositions which, when applied to a substrate and cured, provide articles having transparent abrasion resistant coatings, wherein the coatings have a matched refractive index to that of the substrate and can be tailored to control the extent of tint absorption (vide infra). The coating compositions comprise an aqueous-organic solvent mixture containing a mixture of hydrolysis products and partial condensates of an epoxy-functional silane, a carboxylic acid functional compound selected from the group consisting of carboxylic acids, multifunctional carboxylic acids, anhydrides, and combinations thereof, a metal oxide composite colloid, and a disilane. The coating compositions may further include a mixture of hydrolysis products and partial condensates of one or more silane additives, a colloidal silica material, and a tetrafunctional silane.

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