Hydrophilic silicone monomers, process for their preparation and thin films containing the same
First Claim
Patent Images
1. A hydrogel composition comprising a silicone-containing monomer having the general formula:
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R3Si—
O[—
Si(R)(Z)O]a—
[SiR2O]b—
SiR3
(I)or
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Abstract
There is provided new mono-(meth)acrylate functionalized hydrophilic silicone monomers containing a polyether with branched linking group, useful in making water absorbing silicone-hydrogel films for contact lens applications. This invention also provides homo-polymers and copolymers made from the mono-(meth)acrylate functionalized hydrophilic silicone monomers described herein. Also provided is a process for producing the monomers and polymers described herein and contact lenses produced from the same.
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Citations
22 Claims
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1. A hydrogel composition comprising a silicone-containing monomer having the general formula:
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R3Si—
O[—
Si(R)(Z)O]a—
[SiR2O]b—
SiR3
(I)or - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 22)
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18. A hydrogel composition comprising (a) a silicone-containing monomer, and (b) at least one hydrophilic co-monomer, wherein the difference in solubility parameter between the silicone-containing monomer and the at least one hydrophilic co-monomer is less than about 7.7 (J/mol)1/2, and the silicone-containing monomer is of the formula:
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R3Si—
O[—
Si(R)(Z)O]a—
[SiR2O]b—
SiR3
(I)or - View Dependent Claims (19, 20, 21)
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Specification