Ultraviolet light absorbing ocular lens

Details Ultraviolet light absorbing ocular lens Ultraviolet light absorbing ocular lens

1991-11-26

1992-09-15

Michl, Paul R.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

514972, 524 94, 526259, 548259, C07D24920

Patent

active

051479028

ABSTRACT:
An ultraviolet light absorbing occular lens comprising a vinyl type copolymer containing from 0.01 to 0.5% by weight of a benzotriazole type ultraviolet light absorbing monomer as chemically bonded therewith, the ultravioleet light absorbing monomer having the formula: ##STR1## (wherein R.sub.1 is H or CH.sub.3 and n is 2 or 3).

REFERENCES:
patent: 4528311 (1985-07-01), Beard et al.
patent: 4611061 (1986-09-01), Beard et al.
patent: 4716234 (1987-12-01), Dunks et al.
patent: 4863802 (1989-09-01), Moore et al.
patent: 5084537 (1992-01-01), Stoyan

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