UV Curable Coating Compositions for Improved Abrasion Resistance
AssigneeEssilor International (Compagnie Generale d'Optique)
InventorRobert Valeri
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Abstract
An ophthalmic article and methods of manufacturing the ophthalmic article are described herein. The ophthalmic article can include a first coating and a second coating. The first coating can include an abrasion resistant coating that includes flexible materials. The abrasion resistant coating can be radiation cured. The second coating can include a sputter-applied anti-reflective (AR) coating. Such an ophthalmic article can have a Bayer value of at or between 1.25 and 2.6, between 1.25 and 2.0 or 1.25 and 1.75; and a hand steel wool value of 3 or less.
Claims15
An ophthalmic article comprising:
- a first coating comprising an abrasion resistant coating comprising flexible materials,
- wherein the abrasion resistant coating is radiation-cured;
- and
- a second coating comprising a sputter-applied anti-reflective (AR) coating,
- wherein the ophthalmic article has a Bayer value of at or between 1.25 and 2.6 and a hand steel wool value of 3 or less.
The ophthalmic article of 4, wherein an amount of the flexible materials is greater than the amount of rigid materials.
A method of manufacturing an ophthalmic article comprising:
- applying a first coating to an ophthalmic article, wherein the first coating comprises a radiation-curable abrasion resistant coating comprising at least one of flexible materials, rigid materials, and highly cross-linkable materials;
- radiation-curing the first coating;
- and
- sputter-applying a second coating onto the first coating, the second coating comprising an anti-reflective coating;
- wherein the article has a Bayer value of at or between 1.25 and 2.6 and a hand steel wool value of 3 or less.
Dependencies are inferred from the claim text.