Material for contact lenses

Details Material for contact lenses Material for contact lenses

1985-12-12

1987-05-12

Michl, Paul R.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526246, 523106, 351160R, C08F 2024

Patent

active

046651446

ABSTRACT:
This invention provides a material for contact lenses comprising a polymer having 10 to 100 5 by weight of a structural unit represented by the formula ##STR1## wherein R is (CH.sub.2).sub.l R.sup.1 or --CH.sub.2).sub.m (CF.sub.2).sub.n CFZ.sup.1 Z.sup.2 in which R.sup.1 is oxygen-containing fluoroalkyl, Z.sup.1 and Z.sup.2 are the same or different and each hydrogen, fluorine or fluoroalkyl, l is an integer of 1 to 5, m is an integer of 1 to 4 and n is 0 or an integer of 1 to 10, 0 to 60% by weight of a structural unit represented by the formula ##STR2## wherein R.sup.2 is lower alkyl, and 0 to 80% by weight of a structural unit represented by the formula ##STR3## wherein X is hydroxyl or carboxyl and p is an integer of 1 to 5.

REFERENCES:
patent: 3457247 (1969-07-01), Katsushima et al.
patent: 3542461 (1970-11-01), Girard et al.
patent: 3950315 (1976-04-01), Cleaver
patent: 4259407 (1981-03-01), Tada et al.
patent: 4433111 (1984-02-01), Tighe et al.
patent: 4440918 (1984-04-01), Rice et al.
patent: 4493910 (1985-01-01), Tighe et al.

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