Water-absorptive soft contact lens

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

1995-12-29

1997-08-26

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...

523106, 526242, 526279, 5263232, 351160H, C08F23008

Patent

active

056611943

ABSTRACT:
A water-absorptive soft contact lens comprising a polymer prepared by polymerizing a monomer mixture comprising, as main components, (A) 25 to 75% by weight of a (meth)acrylamide monomer, (B) 20 to 70% by weight of a fluoroalkyl (silicon-containing alkyl) fumarate, and (C) 0.01 to 10% by weight of a crosslinkable monomer. The water-absorptive soft contact lens has excellent oxygen permeability and high mechanical strength independent of water content, and is excellent in transparency and shape stability.

REFERENCES:
patent: 4868260 (1989-09-01), Kawaguchi
patent: 5023305 (1991-06-01), Onozuka et al.
patent: 5250583 (1993-10-01), Kawaguchi et al.
patent: 5374662 (1994-12-01), Lai et al.
patent: 5539016 (1996-07-01), Kunzler et al.

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