Process for the production of an abrasion resistant optical elem

Details Process for the production of an abrasion resistant optical elem Process for the production of an abrasion resistant optical elem

1974-09-30

1976-07-27

Weiffenbach, Cameron K.

Stock material or miscellaneous articles

Composite

Of polycarbonate

427164, 427240, 427322, 427387, 427399, 427430, B05D 506

Patent

active

039718727

ABSTRACT:
A process for preparing an abrasion resistant allyl diglycol carbonate lens is provided. The allyl diglycol carbonate lens prepared by the process of the invention has an abrasion resistant coating thereon comprised of a transparent base of a hydrolyzed polysilicic acid ester and polyvinyl alcohol comprising 90 to 100% hydrolyzed polyvinyl acetate.

REFERENCES:
patent: 2923640 (1960-02-01), Buckingham
patent: 3429845 (1969-02-01), Bechtold et al.
patent: 3429846 (1969-02-01), Bechtold et al.
patent: 3652379 (1972-03-01), White et al.
patent: 3713869 (1973-01-01), Geffcken et al.

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