Water-absorptive soft contact lens

Details Water-absorptive soft contact lens Water-absorptive soft contact lens

1996-02-13

1998-04-21

Merriam, Andrew E.C.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

351160H, 523108, 524578, 524545, 526247, G02C 704

Patent

active

057418306

ABSTRACT:
A water-absorptive soft contact lens comprising a polymer prepared by polymerizing a monomer mixture comprising (A) a fluorine-containing styrene derivative represented by the general formula (I): ##STR1## wherein R.sup.1 is hydrogen atom or methyl group, m is an integer of 1 to 3 and n is 0 or an integer of 1 to 7, and (B) N, N-dimethyl(meth)acrylamide. The water-absorptive soft contact lens has excellent oxygen permeability, high mechanical strength and excellent flexibility independent of water content.

REFERENCES:
patent: 4640965 (1987-02-01), Falcetta et al.
patent: 5091588 (1992-02-01), Yamamoto
patent: 5264465 (1993-11-01), Futamura et al.
patent: 5424468 (1995-06-01), Kim et al.
Patent Abstracts of Japan, vol.014, No.475, Oct. 17, 1990; JP 01 -016,621.
Patent Abstracts of Japan, vol.013, No.391, Aug. 30, 1989; JP 62-299,070.
Chemical Abstracts, vol. 107:200569g, Nov. 30, 1987; "Fluoroalkyl-substituted Styrene Polymers", p. 117.

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