Functional epoxy composition that protects photodegradation dyes and cured coatings prepared from it

摘要

The present invention relates to an optical filtration coating composition comprising at least one dye which at least partially inhibits light transmission in the wavelength range of 400-500 nm and has a conjugated chromophore, one or more. further epoxy compounds comprising at least one cycloaliphatic or aryl group, the ratio of number of carbon atoms to number of oxygen atoms in said epoxy compound being greater than or equal to 3, and representing the dry extract weight of such epoxy compounds present in the composition more than 33% of the dry extract weight of the composition. The coating composition may be applied to the main substrate surface of an optical article.