Optical lenses having a scratch-resistant coating

Details Optical lenses having a scratch-resistant coating Optical lenses having a scratch-resistant coating

1984-08-01

1986-06-10

Ives, P. C.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Physical dimension specified

428412, 428913, 525244, 522 44, 264 22, 351 45, B32B 2736, C08F 2606, G02C 716, B29D 1100

Patent

active

045942889

ABSTRACT:
Lenses of allyl-N-ethylene glycol carbonate having enhanced resistance to scratching or abrasion can be formed by preparing a substrate of a polymer or copolymer of allyl-N-ethylene glycol carbonate, the substrate being at least partially polymerized. A thin film of a copolymer of allyl-N-ethylene glycol carbonate and of an allyl monomer is formed by overmolding on the substrate and polymerized.

REFERENCES:
patent: 2675740 (1954-04-01), Barkley
patent: 4366207 (1982-12-01), Anthony
patent: 4373076 (1983-02-01), Tarumi et al.

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