High refractive index aromatic-based siloxane difunctional macromonomers
AssigneeBausch & Lomb Incorporated
InventorsJoseph C. Salamone, Jay F. Kunzler, Richard M. Ozark, David E. Seelye
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Abstract
Optically transparent, relatively high refractive index polymeric compositions and ophthalmic devices such as intraocular lenses, corneal inlays and contact lenses made therefrom are described herein. The preferred polymeric compositions are produced through the polymerization of one or more aromatic-based siloxane macromonomers or the copolymerization of one or more aromatic-based siloxane macromonomers with one or more non-siloxy aromatic-based monomers, non-aromatic-based hydrophobic monomers or non-aromatic-based hydrophilic monomers.
Claims6
An aromatic-based siloxane macromonomer having a formula of
- wherein the R groups are the same or different;
- each R group comprises an aromatic group having a linking group that covalently attaches the aromatic group to a silicon atom;
- R1 is an aromatic-based substituent or an alkyl;
- x is a non-negative integer, and y and z are natural numbers;
- and wherein an attachment of the aromatic group to the silicon atom results from a hydrosilylation of an allylic functional group on the aromatic group.
An aromatic-based siloxane macromonomer having a formula of
- wherein R1 is an aromatic-based substituent or an alkyl;
- x is a non-negative integer y and z are natural numbers;
- and the R groups are the same or different aromatic-based substituents selected from the group consisting of
Dependencies are inferred from the claim text.