Material and process for controlled thin polymeric coatings on plastic surface
First Claim
1. A chemically coated surface comprising:
- a) a plastics surface;
b) a coupling agent;
c) a chemical surface coating comprising at least one addition polymer;
wherein the chemical surface coating and the coupling agent are covalently bonded, and the coupling agent is a polymer or an oligomer comprising of;
(a) at least two functional groups capable of binding onto the plastics surface(b) at least two functional groups capable of generating a living radical for initiating polymerization of addition monomers;
and wherein the coupling agent has a hydrocarbon backbone.
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Abstract
This invention provides a chemically coated surface for the plastics surface such as contact lens. The chemical surface coating comprises of at least one addition polymer prepared from addition monomers selected from a group consisting of acrylates and its derivatives, metharylates and its derivatives, styrene and its derivatives, acrylamide, methacrylamide, dimethacrylamide, N-monosubstituted acrylamide, N-monosubstituted methacrylamide, N,N-bissubstituted acrylamide, N,N-bissubstituted methacrylamide, vinyl acetate, vinyl pyrolidone, vinyl ether, acrylic acid and methacrylic acid. This invention also provides a chemical process for making the chemically coated surface on the plastics surface. The process comprises:
- (a) contacting the plastics surface with a coupling agent solution, then
- (b) contacting the plastics surface with a first living radical polymerizing solution, and optionally
- (c) contacting the plastics surface with a second living radical polymerizing solution.
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Citations
25 Claims
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1. A chemically coated surface comprising:
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a) a plastics surface; b) a coupling agent; c) a chemical surface coating comprising at least one addition polymer; wherein the chemical surface coating and the coupling agent are covalently bonded, and the coupling agent is a polymer or an oligomer comprising of; (a) at least two functional groups capable of binding onto the plastics surface (b) at least two functional groups capable of generating a living radical for initiating polymerization of addition monomers; and wherein the coupling agent has a hydrocarbon backbone. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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3. A chemically coated surface of claim 2, wherein Y is:
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4. A chemically coated surface of claim 3, wherein R1═
- R2═
CH3, X is Cl or Br.
- R2═
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5. A chemically coated surface of claim 2, wherein Y is:
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6. A chemically coated surface of claim 5, wherein R3═
- R4═
CH3, X is Cl or Br.
- R4═
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7. A chemically coated surface of claim 1, wherein the polymer or oligomer is prepared from acrylic acid and the following molecule:
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8. A chemically coated surface of claim 1, wherein the polymer or oligomer is prepared from
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9. A chemically coated surface of claim 1, wherein the at least one addition polymer is prepared from addition monomers selected from a group consisting of acrylates and its derivatives, methacrylates and its derivatives, styrene and its derivatives, acrylamide, methacrylamide, N-monosubstituted acrylamide, N-monosubstituted methacrylamide, N,N-bissubstituted acrylamide, N,N-bissubstituted methacrylamide, vinyl acetate, vinyl pyrolidone, vinyl ether, acrylic acid, methacrylic acid.
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10. A chemically coated surface of claim 9, wherein the addition monomers are selected from a group consisting of polyethylene glycol methacrylate with (CH2CH2O)n, n=1-20, polyethylene glycol acrylate with (CH2CH2O)n, n=1-20, glycidyl methacrylate, glycidyl acrylate, acrylamide, methacrylamide and vinyl pyrolidone.
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11. A chemically coated surface of claim 10, wherein the addition monomers are selected from a group consisting of polyethylene glycol methacrylate with (CH2CH2O)n, n=1-20, polyethylene glycol acrylate with (CH2CH2O)n, n=1-20, acrylamide, methacrylamide.
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12. A chemically coated surface of claim 1, wherein at least two addition polymers are crosslinked.
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13. Contact lens made with the chemically coated surface of claim 1.
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14. A method for making a chemically coated surface, comprising:
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(a) contacting a plastics surface with a coupling agent solution, then (b) contacting the plastics surface with a first living radical polymerization solution, and optionally (c) contacting the plastics surface with a second living radical polymerization solution wherein the coupling agent is a polymer or an oligomer comprising of; (i) at least two functional groups capable of binding onto the plastics surface (ii) at least two functional groups capable of generating a living radical for initiating polymerization of addition monomers; and wherein the coupling agent has a hydrocarbon backbone. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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16. A method for making a chemically coated surface of claim 14, wherein the polymer or oligomer is prepared from
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17. A method for making a chemically coated surface of claim 14, wherein the first and second living radical polymerizing solution independently comprises of at least one solvent, at least one catalyst and at least one addition monomer.
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18. A method for making a chemically coated surface of claim 17, wherein the solvent is a mixture of water and water miscible organic solvent.
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19. A method for making a chemically coated surface of claim 17, wherein the solvent is water.
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20. A method for making a chemically coated surface of claim 17, wherein the at least one catalyst is selected from the group consisting of MXnEm, wherein M is Cu;
- E is selected from bipyridine and its derivatives, n=1 or 2;
m=2;
X═
Cl or Br.
- E is selected from bipyridine and its derivatives, n=1 or 2;
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21. A method for making a chemically coated surface of claim 20, wherein the catalysts are CuCl(bipyridine)2 and CuCl2(bipyridine)2.
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22. A method for making a chemically coated surface of claim 17, wherein the at least one addition monomer is selected from the group consisting of acrylates and its derivatives, methacrylates and its derivatives, styrene and its derivatives, acrylamide, methacrylamide, N-monosubstituted acrylamide, N-monosubstituted methacrylamide, N,N-bissubstituted acrylamide, N,N-bissubstituted methacrylamide, vinyl acetate, vinyl pyrolidone, vinyl ether, acrylic acid, methacrylic acid, diolefins, triolefins and tetraolefins.
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23. A method for making a chemically coated surface of claim 22, wherein the at least one addition monomer is selected from the group consisting of polyethylene glycol methacrylate with (CH2CH2O)n, n=1-20, polyethylene glycol acrylate with (CH2CH2O)n, n=1-20, glycidyl methacrylate, glycidyl acrylate, acrylamide, methacrylamide and vinyl pyrolidone.
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24. A method for making a chemically coated surface of claim 23, wherein the at least one addition monomer is selected from the group consisting of polyethylene glycol methacrylate with (CH2CH2O)n, n=1-20, polyethylene glycol acrylate with (CH2CH2O)n, n=1-20, acrylamide, methacrylamide.
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25. Contact lens made with the chemically coated surface prepared by the process of claim 14.
Specification