US4891046A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tinted contact lens and method for preparation with dichlorotriazine reactive dye
Assignee: Cooper Companies Inc
•
Filing: 1984-03-15
•
Granted: 1990-01-02
•
Expires: 2004-03-15
Abstract
Abstract Hydrophilic contact lenses comprised of a copolymer of an hydroxyl group-containing monomer and N-vinylpyrrolidone are tinted by impregnating the lens with an aqueous solution of a dichlorotriazine reactive dye and fixing the dye in the lens by contacting the lens with an aqueous alkaline solution.
Inventors
- 👤 Joseph W. Wittmann
- 👤 John M. Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:26
CPC Classifications
B; B29; B29D; B29D11/00; B29D11/00009; B29D11/00038; B29D11/00317; B29D11/00865; B29D11/00894; B29D11/00903; D; D06; D06P; D06P1/00; D06P1/90; D06P1/92; D06P1/928; D06P3/00; D06P3/82; D06P3/8204; D06P3/828; D06P5/00
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
59 words
A process for coloring hydrophilic soft contact lenses comprised of a synthetic resin containing substantial proportions of an hydroxyl group-containing acrylic ester and N-vinylpyrrolidone comprising impregnating the lens with an aqueous solution of a dichlorotriazine dye, and contacting the impregnated lens with an aqueous alkaline solution for a period of time sufficient to fix the dye within the lens.
Claim 2
Dependent Claim
59 words
A process for coloring hydrophilic soft contact lenses comprised of a synthetic resin containing substantial proportions of an hydroxyl group-containing acrylic ester and N-vinylpyrrolidone comprising impregnating the lens with an aqueous solution of a dichlorotriazine dye, and contacting the impregnated lens with an aqueous alkaline solution for a period of time sufficient to fix the dye within the lens.
Claim 3
Dependent Claim
16 words
The process of claim 1 wherein the concentration of the dye solution is 0.1-5% by weight.
Claim 4
Dependent Claim
17 words
The process of claim 1 wherein the concentration of the dye solution is about 1% by weight.
Claim 5
Dependent Claim
17 words
The process of claim 1 wherein said aqueous alkaline solution has a pH no greater than 11.
Claim 6
Dependent Claim
17 words
The process of claim 1 wherein said aqueous alkaline solution has a pH no greater than 10.
Claim 7
Dependent Claim
16 words
The process of claim 1 wherein said aqueous alkaline solution is a solution of sodium carbonate.
Claim 8
Dependent Claim
22 words
The process of claim 1 wherein the impregnated lens from step 1 is washed before being contacted with the aqueous alkaline solution.
Claim 9
Dependent Claim
40 words
The process of claim 1 wherein said dichlorotriazine dye is selected from the group consisting of CI Reactive Blue 163, CI Reactive Red 2, CI Reactive Red 11, CI Reactive Blue 140, CI Reactive Yellow 86 and Procion Black MX-CWA.
Claim 10
Dependent Claim
63 words
A hydrophilic soft contact lens comprised of a synthetic resin containing substantial proportions of an hydroxyl group-containing acrylic ester and N-vinylpyrrol-idone which has been tinted by a process comprising impregnating said lens with an aqueous solution of a dichlorotriazine dye, and contacting the impregnated lens with an aqueous alkaline solution for a period of time sufficient to fix the dye within the lens.
Claim 11
Dependent Claim
63 words
A hydrophilic soft contact lens comprised of a synthetic resin containing substantial proportions of an hydroxyl group-containing acrylic ester and N-vinylpyrrol-idone which has been tinted by a process comprising impregnating said lens with an aqueous solution of a dichlorotriazine dye, and contacting the impregnated lens with an aqueous alkaline solution for a period of time sufficient to fix the dye within the lens.
Claim 12
Dependent Claim
16 words
The lens of claim 9 wherein the concentration of the dye solution is 0.1-5% by weight.
Claim 13
Dependent Claim
17 words
The lens of claim 9 wherein the concentration of the dye solution is about 1% by weight.
Claim 14
Dependent Claim
17 words
The lens of claim 9 wherein said aqueous alkaline solution has a pH no greater than 11.
Claim 15
Dependent Claim
17 words
The lens of claim 9 wherein said aqueous alkaline solution has a pH no greater than 10.
Claim 16
Dependent Claim
16 words
The lens of claim 9 wherein said aqueous alkaline solution is a solution of sodium carbonate.
Claim 17
Dependent Claim
22 words
The lens of claim 9 wherein the impregnated lens from step 1 is washed before being contacted with the aqueous alkaline solution.
Claim 18
Dependent Claim
40 words
The lens of claim 9 wherein said dichlorotriazine dye is selected from the group consisting of CI Reactive Blue 163, CI Reactive Red 2, CI Reactive Red 11, CI Reactive Blue 140, CI Reactive Yellow 86 and Procion Black MX-CWA.
Claim 19
Dependent Claim
35 words
A tinted hydrophilic contact lens comprising an interpolymer hydrogel containing substantial proportions of residues of an hydroxyl group-containing monomer and vinylpyrrolidone residues and having a dichlorotriazine reactive dye bonded to the polymer through ether groups.
Claim 20
Dependent Claim
35 words
A tinted hydrophilic contact lens comprising an interpolymer hydrogel containing substantial proportions of residues of an hydroxyl group-containing monomer and vinylpyrrolidone residues and having a dichlorotriazine reactive dye bonded to the polymer through ether groups.
Claim 21
Dependent Claim
39 words
The contact lens of claim 17 wherein the proportion of hydroxyl group-containing monomer residues is from about 93.8 to about 50% by weight and the proportion of N-vinylpyrrolidone monomer residues is from about 5 to about 50% by weight.
Claim 22
Dependent Claim
22 words
The contact lens of claim 18 wherein the proportion of vinylpyrrolidone monomer residues is from about 12 to about 18% by weight.
Claim 23
Dependent Claim
42 words
The contact lens of claim 17 wherein said reactive dichlorotriazine dye is selected from the group consisting of CI Reactive Blue 163, CI Reactive Red 2, CI Reactive Red 11, CI Reactive Blue 140, CI Reactive Yellow 86 and Procion Black MX-CWA.
References Cited (Backward Citations)
GB1004424A
Cited
US3476499A
Cited
GB1163617A
Cited
GB1237629A
Cited
US3679504A
Cited
US4093361A
Cited
GB1400892A
Cited
JPS4980190A
Cited
US4157892A
Cited
JPS49113846A
Cited
US3937680A
Cited
GB1583492A
Cited
GB1547525A
Cited
US4123407A
Cited
US4252421A
Cited
GB2105061A
Cited
US4468229A
Cited
EP0082026A2
Cited
WO1983003480A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-01-01 | 1993-07-03 | 1994-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-01-01 | 1997-07-03 | 1998-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-01-01 | 2001-07-03 | 2002-01-02 | $7700.00 | Window Closed / Lapsed |