Vinyl carbonate and vinyl carbamate contact lens material monomers
First Claim
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1. A contact lens formed of a copolymer prepared by polymerizing a prepolymer mixture comprising:
- (a) a monomer of the general formula (I);
##STR62## wherein;
a is 1, 2, 3 or 4;
b is 0 or 1;
X is --O--, --S--, or --NR3 --;
R is an organic radical;
R2 is H or CH3;
andR3 is H or a monovalent alkyl radical; and
(b) a crosslinking agent.
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Abstract
Novel monomers of the general formula ##STR1## where b is 0 or 1, a is 1, 2, 3 or 4, R2 is a monovalent alkyl radical and R is an organic radical. The novel monomers may be employed to produce novel copolymers useful as hydrogel, soft non-hydrogel and/or rigid gas permeable contact lens materials.
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Citations
26 Claims
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1. A contact lens formed of a copolymer prepared by polymerizing a prepolymer mixture comprising:
- (a) a monomer of the general formula (I);
##STR62## wherein;
a is 1, 2, 3 or 4;b is 0 or 1; X is --O--, --S--, or --NR3 --; R is an organic radical; R2 is H or CH3;
andR3 is H or a monovalent alkyl radical; and (b) a crosslinking agent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
- (a) a monomer of the general formula (I);
Specification