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US 5,358,995 AGranted
Surface wettable silicone hydrogels
AssigneeBausch & Lomb Incorporated
InventorsYu-Chin Lai, Dominic V. Ruscio, Paul L. Valint, Jr.
Life of this patent
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Abstract
A novel silicone-containing, hydrogel material is disclosed comprising an acrylic-capped polysiloxane prepolymer, polymerized with a bulky polysiloxanylalkyl (meth)acrylate monomer and at least one hydrophilic monomer.
Claims21
A silicone-containing, hydrogel material formed from the polymerization product of a monomer mix comprising:
- a) an acrylic-capped polysiloxane prepolymer represented by the formula:
- ##STR4## wherein;
- A and A' are independently an ester or amide of an acrylic or a methacrylic acid;
- R.sub.1 -R.sub.10 are independently an alkyl, fluoroalkyl, alcohol, ether, or fluoroether group having 1-10 carbons, or an aromatic group having 6-18 carbons;
- m, n, and p are independently 0 to 200 m+n+p being from about 23 to 200;
- and
- a and b are independently 1 to 10;
- b) a bulky polysiloxanylalkyl (meth)acrylate monomer represented by the formula:
- ##STR5## wherein:
- X is O or N--R;
- R is H or CH.sub.3 ;
- R.sub.11 -R.sub.19 are independently an alkyl, fluoroalkyl, alcohol, ether or fluoroether group having 1-10 carbons, or an aromatic group having 6-18 carbons;
- and
- a is 1, or 3 to 10;
- and
- c) at least one hydrophilic monomer.
13 more elements
A silicone-containing, hydrogel material formed from the polymerization product of a monomer mix comprising:
- a) an acrylic-capped polysiloxane prepolymer represented by the formula:
- ##STR6## wherein;
- A and A' are independently an ester or amide of an acrylic or a methacrylic acid;
- R.sub.1 -R.sub.10 are independently an alkyl, fluoroalkyl, alcohol, ether, or fluoroether group having 1-10 carbons, or an aromatic group having 6-18 carbons;
- m, n, and p are independently 0 to 200 m+n+p being from about 23 to 200;
- and
- a and b are independently 1 to 10;
- b) a bulky polysiloxanylalkyl (meth)acrylate monomer represented by the formula:
- ##STR7## wherein:
- X is O or N--R;
- R is H or CH.sub.3 ;
- R.sub.11 -R.sub.19 are independently an alkyl, fluoroalkyl, alcohol, ether or fluoroether group having 1-10 carbons, or an aromatic group having 6-18 carbons;
- and
- a is 1, or 3 to 10;
- and
- c) at least one hydrophilic monomer representing at least 30 to 60 weight percent of the monomer mix.
13 more elements
Dependencies are inferred from the claim text.