Claims
- 1. An ink comprising
a. water; b. at least one colorant; c. a radiation-curable (meth)acrylamidoalkyl derivative of an oligomer or polymer containing a plurality of H-active groups.
- 2. An ink as claimed in claim 1, wherein said H-active groups are selected from the group consisting of —NH2 groups and —OH groups.
- 3. An ink as claimed in claim 1, wherein said (meth)acrylamidoalkyl derivative is obtained by substituting at least one hydrogen atom in H-active groups of the oligomer or polymer with radicals of a N-hydroxyalkyl (meth)acrylamide of the structure
- 4. An ink as claimed in claim 3, wherein the N-hydroxyalkyl (meth)acrylamide is selected from the group consisting of N-2-hydroxylethyl acrylamide, N-2-hydroxyethyl methacrylamide, N-methylol acrylamide, and N-methylol methacrylamide.
- 5. An ink as claimed in claim 2, wherein said polymer is selected from the group consisting of polysaccharides, polysaccharide derivatives, poly(vinyl alcohol), poly(ethylene glycol), poly(propylene oxide), PEG-block-PPO, poly(acrylamide) poly(acrylamide), and copolymers thereof.
- 6. An ink as claimed in claim 5, wherein said polymer is selected from the group consisting of dextran, hydroxypropylcellulose, hydroxyethylcellulose, and polysaccharides comprising glucose monosaccharide units.
- 7. An ink as claimed in claim 1, wherein said polymer is dextran and said N-hydroxyalkyl (meth)acrylamide is N-methylol acrylamide.
- 8. An ink as claimed in claim 1, further comprising a crosslinkable, water-soluble poly(vinyl alcohol).
- 9. A method for printing on a biomedical device, comprising the steps of:
(a) providing a medical device constructed of a polymer; (b) applying a color coat to at least a portion of a surface of the biomedical device, wherein said color coat comprises comprising water, at least one colorant, and a (meth)acrylamidoalkyl derivative of a oligomer or polymer containing a plurality of H-active groups; and (c) exposing the color coat to actinic radiation sufficient to crosslink said (meth)acrylamidoalkyl derivative.
- 10. A method as claimed in claim 9, wherein said H-active groups are selected from the group consisting of —NH2 groups and —OH groups.
- 11. A method as claimed in claim 9, wherein the (meth)acrylamidoalkyl derivative is obtained by substituting at least one hydrogen atom in H-active groups of the oligomer or polymer with radicals of a compound selected from the group consisting of N-2-hydroxylethyl acrylamide, N-2-hydroxyethyl methacrylamide, N-methylol acrylamide, and N-methylol methacrylamide.
- 12. A method as claimed in claim 9, wherein said polymer is the (meth)acrylamidoalkyl derivative of a polymer selected from the group consisting of polysaccharides, polysaccharide derivatives, poly(vinyl alcohol), poly(ethylene glycol), poly(propylene oxide), PEG-block-PPO, poly(acrylamide) poly(acrylamide), and copolymers thereof.
- 13. A method as claimed in claim 12, wherein said polymer is the (meth)acrylamidoalkyl derivative of a polymer selected from the group consisting of dextran, hydroxypropylcellulose, hydroxyethylcellulose, and polysaccharides comprising glucose monosaccharide units.
- 14. A method as claimed in claim 9, wherein said polymer is a N-methylol acrylamido derivative of dextran.
- 15. A method as claimed in claim 9, wherein said color coat further comprises a crosslinkable, water-soluble poly(vinyl alcohol).
- 16. A method for making a colored contact lens comprising the steps:
(a) coating at least a portion of at least one lens-forming surface of a lens mold with an ink comprising water, at least one colorant, and a (meth)acrylamidoalkyl derivative of a oligomer or polymer containing a plurality of H-active groups; and (b) adding a lens forming composition to the lens mold while maintaining the ink in position; and (c) curing the lens-forming composition to form a colored lens.
- 17. A method as claimed in claim 16, wherein said H-active groups are selected from the group consisting of —NH2 groups and —OH groups.
- 18. A method as claimed in claim 16, wherein the (meth)acrylamidoalkyl derivative is obtained by substituting at least one hydrogen atom in H-active groups of the oligomer or polymer with radicals of a compound selected from the group consisting of N-2-hydroxylethyl acrylamide, N-2-hydroxyethyl methacrylamide, N-methylol acrylamide, and N-methylol methacrylamide.
- 19. A method as claimed in claim 16, wherein said polymer is the (meth)acrylamidoalkyl derivative of a polymer selected from the group consisting of polysaccharides, polysaccharide derivatives, poly(vinyl alcohol), poly(ethylene glycol), poly(propylene oxide), PEG-block-PPO, poly(acrylamide) poly(acrylamide), and copolymers thereof.
- 20. A method as claimed in claim 19, wherein said polymer is the (meth)acrylamidoalkyl derivative of a polymer selected from the group consisting of dextran, hydroxypropylcellulose, hydroxyethylcellulose, and polysaccharides comprising glucose monosaccharide units.
- 21. A method as claimed in claim 16, wherein said polymer is a N-methylol acrylamido derivative of dextran.
- 22. A method as claimed in claim 16, wherein said color coat further comprises a crosslinkable, water-soluble poly(vinyl alcohol).
- 23. A contact lens having a front surface and a back surface, wherein said lens comprises the ink as claimed in claim 1 on at least one surface of said lens.
- 24. A contact lens made by the method of claim 9.
- 25. A contact lens made by the method of claim 16.
Parent Case Info
[0001] This application claims the benefit under 35 U.S.C. §119 (e) of U.S. provisional application No. 60/423,230 filed Nov. 1, 2002, and is incorporated by reference in it's entirety.
Provisional Applications (1)
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Number |
Date |
Country |
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60423230 |
Nov 2002 |
US |