Coating composition for an optical article, comprising a colloidal suspension of zirconia particles

摘要

The present invention pertains to a coating composition comprising a colloidal suspension of specific zirconia nano-particles, at least one epoxysilane and at least one catalyst. It also pertains to a method for preparing this composition, and to its use for coating a transparent optical substrate. This invention is also directed to an optical article, such as an ophthalmic lens, comprising a transparent polymer substrate, especially an acrylic substrate, and a coating prepared from the aforesaid composition, which is directly applied on said substrate.