Contact lens material

Details Contact lens material Contact lens material

1984-12-18

1986-07-22

Wong, Jr., Harry

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

351160R, 351160H, 526264, 526279, C08F22026, G02C 704

Patent

active

046020748

ABSTRACT:
A contact lens material made of an organosiloxane ester copolymer. The organosiloxane is represented by the general formula: ##STR1## and the ester is composed of C.sub.1 -C.sub.10 mono- or multi-valent alcohol and methacrylic acid, acrylic acid or itaconic acid. The contact lens is oxygen permeable and substantially free of water-absorption, so that it is easy to handle. It may be worn comfortably for extended period.

REFERENCES:
patent: 4139692 (1979-02-01), Tanaka et al.
patent: 4153641 (1979-05-01), Deichert et al.
patent: 4216303 (1980-08-01), Novicky
patent: 4246389 (1981-01-01), LeBoeuf
patent: 4248989 (1981-02-01), Novicky
patent: 4254248 (1981-03-01), Friends et al.
patent: 4433125 (1984-02-01), Ichinohe et al.
patent: 4507452 (1985-03-01), Foley
patent: 4525563 (1985-06-01), Shibata et al.
patent: 4535138 (1985-08-01), Ratkowski et al.

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