Wettable hydrogels comprising reactive, hydrophilic, polymeric internal wetting agents
AssigneeJohnson & Johnson Vision Care, Inc.
InventorsWalter R. Laredo, Stephen C. Arnold, Kevin McCabe, Susan Orr, Azaam Alli
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Abstract
The present invention relates to wettable silicone hydrogels comprising the reaction product of at least one siloxane containing component and at least one reactive, hydrophilic polymeric internal wetting agent. The present invention further relates to silicone hydrogel contact lenses comprising at least one oxygen permeable component, and an amount of reactive, hydrophilic polymeric internal wetting agent sufficient to impart wettability to said device.
Claims30
A silicone hydrogel formed from a reaction mixture comprising at least one oxygen permeable component and at least one reactive, hydrophilic polymeric internal wetting agent derived from at least one polymer comprising repeating units of
- wherein Q is a direct bond,
- wherein Rc is a C1 to C3 alkylene group;
- Ra is selected from H, straight or branched, substituted or unsubstituted C1 to C4 alkyl groups,
- Rb is selected from H, straight or branched, substituted or unsubstituted C1 to C4 alkyl groups, amino groups having up to two carbons, amide groups having up to 4 carbon atoms and alkoxy groups having up to two carbons and wherein the number of carbon atoms in Ra and Rb taken together is 8 or less.
Dependencies are inferred from the claim text.