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US 7,732,546 B2Granted
Use of silylated sulfonate monomers to improve contact lens wettability
AssigneeBausch & Lomb Incorporated
InventorsJoseph C. Salamone, Jay F. Kunzler
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Abstract
The present invention relates to polymeric compositions useful in the manufacture of biocompatible medical devices. More particularly, the present invention relates to certain hydrophilic monomers capable of polymerization to form polymeric compositions having desirable physical characteristics useful in the manufacture of ophthalmic devices. The polymeric compositions comprise polymerizable hydrophilic siloxanyl monomers.
Claims10
A monomer mix comprising a monomer of Formula (I):
- V-L-A-Si(R)3 Formula (I)
- and a second monomer Formula (II):
- V-L-N(R)2 Formula (II)
- wherein V is a polymerizable ethylenically unsaturated organic radical, L is divalent linking group;
- A is a residue capable of forming organic acids, salts or esters selected from the group consisting of sulfonates, sulfates, sulfites, phosphates, phosphites, pyrophosphates and phosphonates;
- and R is independently a monovalent radical.
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A method of making a biomedical device comprising:
- providing a monomer mixture comprising a monomer of Formula (I):
- V-L-A-Si(R)3 Formula (I)
- and a second monomer of Formula (II):
- V-L-N(R)2 Formula (II)
- wherein V is a polymerizable ethylenically unsaturated organic radical, L is divalent linking group;
- A is a residue capable of forming organic acids, salts or esters selected from the group consisting of sulfonates, sulfates, sulfites, phosphates, phosphites, pyrophosphates and phosphonates;
- and R is independently a monovalent radical;
- subjecting the monomer mixture to polymerizing conditions to provide a polymerized device;
- extracting the unpolymerized monomers from the polymerized device;
- and
- packaging and sterilizing the polymerized device.
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Dependencies are inferred from the claim text.