Surface active prepolymers with both fluorine-containing groups and hydrophilic groups
View Patent ↗Provided are surface modified contact lenses formed from one or more fumaric-or itaconic-containing prepolymers having polymerizable functionality that is complimentary to polymerizable hydrophilic polymers.
1. A prepolymer of the following structure:
YCO—CH═CHCOXOCCH═CH—COY (I)
and
CH 2 ═C(CH 2 COY)—COXOC(CH 2 COY)C═CH 2 (II)
wherein Y is a group derived from a reactive oligomer of hydrophilic monomers and X is derived from a reactive fluoroether.
2. The prepolymer of claim 1 wherein Y is a group derived from a reactive oligomer of hydrophilic monomers having the following structure:
HZ—CH 2 CH 2 —S-M m
wherein m is a hydrophilic monomer or comonomer, m is an integer between 2 and 50 and Z is O or NR′, and R′ is an alkyl group of C1 to C10.
3. The prepolymer of claim 2 wherein the Mn of Y is 500 to 15,000.
4. The prepolymer of claim 2 wherein the Mn of Y is 500 to 1,500.
5. The prepolymer of claim 2 wherein the Mn of Y is 1,000 to 1,500.
6. The prepolymer of claim 2 wherein M is N-vinylpyrrolidone.
7. The prepolymer of claim 2 wherein M is N,N-dimethylacrylamide.
8. The prepolymer of claim 2 wherein X is derived from polytetrafluoroethylene glycol.
9. The prepolymer of claim 2 wherein X is derived from polytetrafluoroethylene glycol and Y is derived from N-vinylpyrrolidone-based hydrophilic oligomer.
10. A polymerizable monomer mixture comprising at least one prepolymer of claim 1 .
11. The polymerizable monomer mixture of claim 10 wherein the relative weight % of the prepolymer of claim 1 as compared to the total monomer mix weight % is from about 0.25% to about 10%.
12. The polymerizable monomer mixture of claim 10 wherein the relative weight % of the prepolymer of claim 1 as compared to the total monomer mix weight % is about 0.5% to about 5%.
13. The polymerizable monomer mixture of claim 10 wherein the relative weight % of the prepolymer of claim 1 as compared to the total monomer mix weight % is about 1% to about 2%.
14. The monomer mixture of claim 10 further comprising at least one additional hydrophilic monomer.
15. The monomer mixture of claim 14 wherein the hydrophilic monomer is selected from the group consisting of ethylenically unsaturated lactam-containing monomers, methacrylic acids, acrylic acids, (meth)acrylic substituted alcohols, (meth)acrylamides, vinyl carbonate, vinyl carbamate monomers, oxazolinone monomers, glycerol methacrylate, polyethyleneglycol monomethacrylate and mixtures thereof.
16. The monomer mixture of claim 10 further comprising at least one silicone monomer.
17. The monomer mixture of claim 16 wherein the at least one silicone monomer is a bulky polysiloxanylalkyl (meth)acrylic monomer.
18. The monomer mixture of claim 16 further wherein the at least one silicone monomer is selected from the group consisting of methacryloxypropyl tris(trimethylsiloxy)silane (TRIS), pentamethyldisiloxanylmethylmethacrylate, tris(trimethylsiloxy)methacryloxy propylsilane, phenyltetramethyldisiloxanylethyl acrylate, methylbis(trimethylsiloxy)methacryloxymethyl silane and mixtures thereof.
19. The monomer mixture of claim 10 further comprising a crosslinking agent.