Scratch-resistant coating and method of making coated lenses

Details Scratch-resistant coating and method of making coated lenses Scratch-resistant coating and method of making coated lenses

1991-01-29

1993-09-21

Bell, Janyce

Coating processes

Medical or dental purpose product; parts; subcombinations;...

Particulate or unit-dosage-article base

427164, 427240, 427493, 427498, 427508, 427521, 427595, B05D 506

Patent

active

052467287

ABSTRACT:
Plastic ophthalmic lenses are coated with a spin-coating process. A coating solution containing at least ninety percent tri- and tetra-acrylates in a butanol solvent is spin-coated onto the surface of a plastic lens. After drying, the coating is exposed to ultraviolet radiation to cure the coating. A photoinitiator is used which counteracts the tendency of oxygen to inhibit curing of the coating at its exterior surface.

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patent: 4582862 (1986-04-01), Berner et al.
patent: 4774035 (1988-09-01), Carmelite et al.

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