UV absorbers and PMMA material containing such absorbers

Details UV absorbers and PMMA material containing such absorbers UV absorbers and PMMA material containing such absorbers

1990-05-22

1993-03-16

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, 524194, 548257, 548261, C08F23208, C08F12036, C07D24920

Patent

active

051944561

ABSTRACT:
The novel compound of the formula ##STR1## has been found to be useful as a UV absorber. A novel PMMA material has incorporated therein a UV absorbing amount of the novel UV absorber. Intraocular lenses and contact lenses are produced from PMMA having incorporated therein a UV absorbing amount of the novel UV absorber.
Eyeglasses are produced having lenses of a polycarbonate material which has incorporated therein a UV absorbing amount of the novel UV absorbed.

REFERENCES:
patent: 4260768 (1981-04-01), Lorenz et al.
patent: 4716234 (1987-12-01), Dunks et al.
patent: 4745194 (1988-05-01), Vogl et al.

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