Patent ID: 8945684
Filing Date: 2015-02-03
Classification: C09D,G02B

Abstract:
1. A process for depositing an anti-fouling top coat onto an outermost layer of an optical article, comprising the steps of: a) in an evacuatable vacuum chamber, providing both the optical article having two main faces, at least one of which being coated with the outermost layer, and a liquid antifouling coating material; then b) performing an activation treatment of said outermost layer with energetic species, which are chemical species or electrons, having an energy ranging from 1 to 150 eV resulting in surface physical attack and/or chemical modification of said outermost layer; and then c) evaporating under vacuum the liquid anti-fouling coating material with an evaporation device, resulting in deposition of the evaporated coating material onto the outermost layer of the optical article and in formation of the anti-fouling top coat, wherein prior to c), said liquid anti-fouling coating material and said outermost layer of the optical article are subjected in the same vacuum chamber to said activation treatment, which is selected from at least one of vacuum plasma treatment, atmospheric pressure plasma treatment, glow discharge plasma treatment, and corona discharge treatment.