Soft contact lenses
AssigneeJohnson & Johnson Vision Care, Inc.
InventorsDouglas G. Vanderlaan, David C. Turner, Marcie V. Hargiss, Annie C. Maiden, Robert N. Love, James D. Ford, Frank F. Molock, Robert B. Steffen, Gregory A. Hill, Azaam Alli, John B. Enns, Kevin P. McCabe
Life of this patent
Estimating the term…
Abstract
A soft contact lens containing a silicone-hydrogel made by curing a reaction mixture containing a silicone-containing monomer.
Claims24
A contact lens comprising a silicone hydrogel comprising a mono-alkyl terminated polydiorganosiloxane having the structure:
- where b=0 to 100;
- R58 is a monovalent group comprising at least one ethylenically unsaturated moiety;
- each R59 is independently a monovalent alkyl, or aryl group, which may be further substituted with alcohol, amine, ketone, carboxylic acid or ether groups;
- R60 is a monovalent alkyl, or aryl group, which may be further substituted with alcohol, amine, ketone, carboxylic acid or ether groups, and R61 is independently alkyl or aromatic, or a monovalent siloxane chain comprising from 1 to 100 repeating Si—O units;
- wherein said silicone hydrogel comprises a Young's modulus less than about 180 psi and a tan δ of equal to or less than about 0.25 at a frequency of 1 Hz at 25° C., provided that said mono-alkyl terminated polydiorganosiloxane is not a hydroxyalkylamine-functional silicone-containing monomer.
A silicone hydrogel contact lens comprising a (CT) of about 50 to about 160 μm and a Young's modulus (B) of about 40 to about 300 psi, wherein (E)(CT)2 is less than about 1 psi·mm2 wherein said silicone hydrogel comprises a mono-alkyl terminated polydiorganosiloxane having the structure:
- where b=0 to 100;
- R58 is a monovalent group comprising at least one ethylenically unsaturated moiety;
- each R59 is independently a monovalent alkyl, or aryl group, which may be further substituted with alcohol, amine, ketone, carboxylic acid or ether groups;
- R60 is a monovalent alkyl, or aryl group, which may be further substituted with alcohol, amine, ketone, carboxylic acid or ether groups, and R61 is independently alkyl or aromatic, or a monovalent siloxane chain comprising from 1 to 100 repeating Si—O units, provided that said mono-alkyl terminated polydiorganosiloxane is not a hydroxyalkylamine-functional silicone-containing monomer.
Dependencies are inferred from the claim text.