Contact lens

Details Contact lens Contact lens

1989-04-26

1991-04-16

Schofer, Joseph L.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

351160H, C08F 1820, G02C 704

Patent

active

050083546

ABSTRACT:
The contact lens of the present invention consisting of a polymer comprising, as an essential component, at least one fluorine-containing monomer represented by the general formula ##STR1## (R.sub.1 and R.sub.2 are independently H or CH.sub.3 and may be the same or different, l is an integer of 1-5, m is an integer of 1-2, n is an integer of 4-10, p is an integer of 8 or more, q is an integer of 0 or more, and p+q=2n+1), has high transparency, improved oxygen permeability, flexibility, hydrophilicity and no water absorbability.

REFERENCES:
patent: 3625929 (1971-12-01), Stump Jr. et al.
patent: 3660360 (1972-05-01), Chaudhuri et al.
patent: 4147851 (1979-04-01), Raynolds
patent: 4433125 (1984-02-01), Ichinohe et al.
patent: 4550001 (1985-10-01), Suminoe et al.
patent: 4737556 (1988-04-01), Itoh et al.

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