HYDROPHILIC SILICONE MONOMERS, PROCESS FOR THEIR PREPARATION AND THIN FILMS CONTAINING THE SAME
First Claim
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1. A mono-functional silicone-containing monomer having the general formula:
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Abstract
There is provided a 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
30 Claims
- 1. A mono-functional silicone-containing monomer having the general formula:
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18. A process for producing a silicone-containing monomer comprising:
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a) reacting a silicone-containing compound having the general formula;
R3Si—
O—
[SiH(R)]a[OSiR2]b—
OSiR3wherein a is 1 to about 50; b is 0 to about 100; and each R is independently selected from the group consisting of monovalent aliphatic, cycloaliphatic or aromatic hydrocarbon groups of 1 to about 10 carbons and halogenated hydrocarbon groups of 1 to about 10 carbons; with at least one polyether having the general formula;
CH2═
CHRb—
(CH2)m—
(OC2H4)p—
(OC3H6)q—
(OC4H8)r—
Ywherein m is 1 to about 20, Rb is an alkyl having from 1 to about 4 carbons, p and q individually are 0 to about 100; r is 0 to about 50; and Y is OH, a halogen or an epoxy group, in the presence of a catalyst to produce a polyether siloxane; and b) reacting said polyether siloxane with an alkylacryloyl compound having the general formula; - View Dependent Claims (19, 20, 21, 22)
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Specification