Contact lenses

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1989-07-21

1992-04-21

Schofer, Joseph L.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526279, 351160R, C08F 1220

Patent

active

051069300

ABSTRACT:
A contact lens material which is lipophobic, easily machined and is oxygen permeable which comprises a copolymer comprising from 25% to 50% by weight of a polysiloxanylalkyl ester of acrylic or methacrylic acid, from 40% to 69% by weight of a fluorinated styrene, from 4% to 7% of a hydrophilic monomer, from 2% to 5% of a suitable cross-linking agent and from 0% to 2% of a UV absorber.

REFERENCES:
patent: 2945003 (1960-07-01), Olson et al.
patent: 3467634 (1969-09-01), Jacknew et al.
patent: 3808178 (1974-04-01), Gaylord
patent: 4120570 (1978-10-01), Gaylord
patent: 4327202 (1982-04-01), Foley, Jr.
patent: 4420225 (1983-12-01), Baner et al.

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