Patent EP0187137A2 successfully refreshed from Google Patents.
EP0187137A2
Expired / Lapsed
EP
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Colored contact lenses and method for making same
Assignee: Novartis AG
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Filing: 1986-01-03
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Granted: —
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Expires: 2006-01-03
Abstract
Abstract Colored contact lenses are produced by providing a contact lens constructed of polymer and coating at least a portion of the lens with coloring substance and binding polymer. The lens and binding polymers are bonded to each other by the reaction of functional groups selected from at least one of - COOH, - OH, and - NH - R, wherein R is hydrogen or alkyl, with functional groups selected from at least one of -NCO and epoxy.
Inventors
- 👤 Samuel Loshaek
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 11:00
CPC Classifications
G; G02; G02C; G02C7/00; G02C7/02; G02C7/04; B; B29; B29D; B29D11/00; B29D11/00865; B29D11/00894; B29D11/00903; C; C08; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/043
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
247 words
A method for making a colored contact lens comprising the steps of: a) providing a contact lens constructed of polymer, b) coating at least a portion of a surface of the lens with a color coat comprising coloring substance and binding polymer, and c) binding the lens polymer to the binding polymer by the reaction of functional groups selected from at least one of -COOH, -OH, and -NH-R, wherein R is hydrogen or alkyl with functional groups selected from at least one of -NCO and epoxy, wherein either (A) the lens polymer and binding polymer have functional groups selected from at least one of -COOH, -OH, and -NH-R, and the color coat also comprises an additional compound having at least two groups per molecule selected from at least one of -NCO and epoxy; or (B) the lens polymer has functional groups selected from at least one of -COOH, -OH, and -NH-R, and the binding polymer has functional groups selected from at least one of -NCO and epoxy; or (C) the lens polymer has functional groups selected from at least one of -NCO and epoxy, and the binding polymer has functional groups selected from at least one of -COOH, -OH, and -NH-R; or (D) the lens polymer and binding polymer have functional groups selected from at least one of -NCO and epoxy and the color coat also comprises an additional compound having at least two groups per molecule selected from at least one of -COOH, -OH, and -NH-R.
Claim 2
Independent Claim
247 words
A method for making a colored contact lens comprising the steps of: a) providing a contact lens constructed of polymer, b) coating at least a portion of a surface of the lens with a color coat comprising coloring substance and binding polymer, and c) binding the lens polymer to the binding polymer by the reaction of functional groups selected from at least one of -COOH, -OH, and -NH-R, wherein R is hydrogen or alkyl with functional groups selected from at least one of -NCO and epoxy, wherein either (A) the lens polymer and binding polymer have functional groups selected from at least one of -COOH, -OH, and -NH-R, and the color coat also comprises an additional compound having at least two groups per molecule selected from at least one of -NCO and epoxy; or (B) the lens polymer has functional groups selected from at least one of -COOH, -OH, and -NH-R, and the binding polymer has functional groups selected from at least one of -NCO and epoxy; or (C) the lens polymer has functional groups selected from at least one of -NCO and epoxy, and the binding polymer has functional groups selected from at least one of -COOH, -OH, and -NH-R; or (D) the lens polymer and binding polymer have functional groups selected from at least one of -NCO and epoxy and the color coat also comprises an additional compound having at least two groups per molecule selected from at least one of -COOH, -OH, and -NH-R.
Claim 3
Independent Claim
13 words
The method of claim l(A) wherein the additional compound contains two isocyanate groups.
Claim 4
Dependent Claim
19 words
The method of claim 2 wherein the additional compound is selected from hexamethylene diisocyanate, 2,4-toluene diisocyanate, and bis(isocyanatophenyl) methane.
Claim 5
Independent Claim
63 words
The method of any one of claims 1(A), 2, or 3 wherein the lens polymer and binding polymer are formed from monomers comprising at least one monomer selected from acrylic acid, methacrylic acid, hydroxy C l to C 6 alkyl ester of acrylic and methacrylic acid, aminoalkyl ester of acrylic and methacrylic acid, glycerol esters of acrylic and methacrylic acid, and mixtures thereof.
Claim 6
Independent Claim
54 words
The method of any one of claims 1(A), 2, 3, or 4 wherein the lens polymer and binding polymer further comprises at least one monomer selected from N-vinyl heterocylic monomers, alkyl vinyl ethers, alkyl esters of acrylic or methacrylic acid, alkyl styrene, vinyl monomers, diene monomers, and alkoxyalkyl ester of acrylic or methacrylic acid.
Claim 7
Independent Claim
41 words
The method of any one of claims 1(A), 2, 3, or 5 wherein the lens polymer and binding polymer are formed from a mixture of monomers comprising hydroxyethyl methacrylate, ethoxyethyl methacrylate and methacrylic acid and the additional compound is hexamethylene diisocyanate.
Claim 8
Independent Claim
32 words
The method of any one of claims l(A), 2, 3, 4, 5, or 6, further comprising the step of applying a transparent, substantially pigment-free, coat comprising binding polymer over the color coat.
Claim 9
Dependent Claim
14 words
A lens made by the method of any one of claims 1 to 7.
Claim 10
Dependent Claim
76 words
A colored contact lens comprising: (a) a lens body constructed of polymer (b) coloring substance mixed with binding polymer on at least a portion of a surface of the lens, wherein the binding polymer and lens polymer are bonded to each other by the reaction of functional groups selected from at least one of -COOH, -OH, and -NH-R, wherein R is hydrogen or alkyl with functional groups selected from at least one of -NCO and epoxy.
Claim 11
Dependent Claim
76 words
A colored contact lens comprising: (a) a lens body constructed of polymer (b) coloring substance mixed with binding polymer on at least a portion of a surface of the lens, wherein the binding polymer and lens polymer are bonded to each other by the reaction of functional groups selected from at least one of -COOH, -OH, and -NH-R, wherein R is hydrogen or alkyl with functional groups selected from at least one of -NCO and epoxy.
Claim 12
Dependent Claim
56 words
The lens of claim 9 wherein the lens polymer and binding polymer are formed from at least one monomer selected from acrylic acid, methacrylic acid, hydroxy C l to C 6 alkyl ester of acrylic or methacrylic acid, amino alkyl ester of acrylic or methacrylic acid, glycerol esters of acrylic or methacrylic acid and mixtures thereof.
References Cited (Backward Citations)
No citation records indexed.
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