Ocular lens material

Details Ocular lens material Ocular lens material

1992-06-09

1993-10-05

Michl, Paul R.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

523106, 523108, 526242, 526279, 526323, 351160H, C08F 1220, C08F23008

Patent

active

052505839

ABSTRACT:
An ocular lens material comprising a copolymer prepared by polymerizing a monomer mixture comprising, as main components, (A) 15 to 40% by mole of a fluoroalkyl (silicon-containing alkyl) fumarate, (B) 35 to 55% by mole of an N-vinyl lactam, (C) 3 to 30% by mole of at least one of acrylic acid and methacrylic acid, and (D) 0.1 to 20% by mole of a crosslinkable monomer. The ocular lens material is excellent in all of transparency, oxygen permeability, mechanical strength and hardness. Further, the material is excellent in hydrophilic property in spite of its low water absorption.

REFERENCES:
patent: 4540761 (1985-09-01), Kawamura et al.
patent: 4868260 (1989-09-01), Kawaguchi
patent: 5023305 (1991-06-01), Onozuka et al.

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