Coated optical articles
AssigneePPG Industries Ohio, Inc.
InventorsMatthew S. Faber, Amelia Elizabeth Horner, Matthew S. Luchansky, Wei Wang
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Abstract
A coated optical article includes: an optical substrate; a first coating layer applied directly over at least a portion of an optical substrate, the first coating layer formed from a first coating composition including an aqueous medium and keto and/or aldo functional polymeric materials that are dispersed in the aqueous medium; and a second coating layer applied directly over at least a portion of the first coating layer, the second coating layer including a sol-gel and which is formed from a second coating composition. The first coating composition and second coating composition are each independently substantially free of hydrazine and hydrazide functional components.
Claims20
A coated optical article comprising:
- an optical substrate;
- a first coating layer applied directly over at least a portion of the optical substrate, the first coating layer formed from a first coating composition comprising an aqueous medium and keto and/or aldo functional polymeric materials dispersed in the aqueous medium;
- and
- a second coating layer applied directly over at least a portion of the first coating layer, the second coating layer comprising a sol-gel and which is formed from a second coating composition comprising a sol,
- wherein the first coating composition and second coating composition are each independently substantially free of hydrazine and hydrazide functional components;
- and wherein the keto and/or aldo functional polymeric materials are present in the first coating composition in an amount of at least 50 weight %, based on the total solids weight of the first coating composition.
Dependencies are inferred from the claim text.