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US 4,818,801 AGranted
Ophthalmic device comprising a polymer of a telechelic perfluoropolyether
AssigneeMinnesota Mining and Manufacturing Company
InventorsDavid E. Rice, Jay V. Ihlenfeld
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Abstract
Ophthalmic devices, such as contact lenses, of polymers of telechelic perfluorinated polyether monomers, and compositions for making such devices are disclosed. The devices possess improved oxygen permeability.
Claims29
A contact lens comprising a polymer of a telechelic perfluoropolyether monomer having a number average molecular weight between about 500 and 15,000 which has the formula
- Q--W--C.sub.k F.sub.2k O--.sub.p --C.sub.q F.sub.2q --Z
- wherein Q is a functional group which will undergo electrophilic, nucleophilic, or free radical reaction;
- W is a divalent connecting moiety;
- Z is --WQ or fluorine;
- p represents the nunber of --C.sub.k F.sub.2k O-- subunits in said monomer and is an integer of from 3 to 200;
- q is an integer of from 1 to 4;
- and k is the same within a given --C.sub.k F.sub.2k O-- subunit but may vary from --C.sub.k F.sub.2k O-- subunit to --C.sub.k F.sub.2k O-- subunit and is an integer of from 1 to 4.
4 more elements
A contact lens comprising an oxygen permeable copolymer of (a) a telechelic perfluoropolyether monomer having a number average molecular weight between about 500 and 15,000 which has the formula
- Q--W--C.sub.k F.sub.2k O--.sub.p --C.sub.q F.sub.2q --Z
- wherein Q is a functional group which will undergo electrophilic, nucleophilic, or free radical reaction;
- W is a divalent connecting moiety;
- Z is --WQ or fluorine;
- p represents the number of --C.sub.k F.sub.2k O-- subunits in said monomer and is an integer of from 3 to 200;
- q is an integer of from 1 to 4;
- and k is the same within a given --C.sub.k F.sub.2k O-- subunit but may vary from --C.sub.k F.sub.2k O-- subunit to --C.sub.k F.sub.2k O-- subunit and is an integer of from 1 to 4, and (b) a compatible, first comonomer copolymerizable with said telechelic perfluoropolyether monomer.
4 more elements
Dependencies are inferred from the claim text.