Patent JPS6046019A successfully refreshed from Google Patents.
US4640965A
Expired / Lapsed
US
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Hydrogel compositions using p-(2-hydroxyhexafluoroisopropyl) styrene as a comonomer
Assignee: Alcon Vision LLC
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Filing: 1986-01-07
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Granted: 1987-02-03
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Expires: 2006-01-07
Abstract
Abstract Hydrogel compositions characterized by a copolymer composition which includes a hydroxyfluoroalkylstyrene as a comonomer. The preferred comonomer compound is p-(2-hydroxyhexafluoroisopropyl)-styrene [HFIS].
Inventors
- 👤 Joseph J. Falcetta
- 👤 Joonsup Park
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:56
CPC Classifications
C; C08; C08F; C08F212/00; C08F212/02; C08F212/04; C08F212/14; C08F212/22; C08F212/24; C08F212/16; C08F212/20; G; G02; G02B; G02B1/00; G02B1/04; G02B1/041; G02B1/043
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
86 words
A hydrogel polymeric material based on copolymers comprising from about 40% to about 95% of a comonomer or comonomers that will form a hydrogel and from about 5% to about 60% by weight of a hydroxyfluoroalkyl styrene monomer of the formula: ##STR3## wherein X and Y are individually the same or different monovalent fluoroalkyl, each selected from the group consisting of perfluoroalkyl, ω-hydrofluoroalkyl, and ω-chloroperfluoroalkyl radicals wherein the alkyl or X and Y is C 1 to C 8 , or jointly a divalent perfluoroalkylene radical.
Claim 2
Dependent Claim
86 words
A hydrogel polymeric material based on copolymers comprising from about 40% to about 95% of a comonomer or comonomers that will form a hydrogel and from about 5% to about 60% by weight of a hydroxyfluoroalkyl styrene monomer of the formula: ##STR3## wherein X and Y are individually the same or different monovalent fluoroalkyl, each selected from the group consisting of perfluoroalkyl, ω-hydrofluoroalkyl, and ω-chloroperfluoroalkyl radicals wherein the alkyl or X and Y is C 1 to C 8 , or jointly a divalent perfluoroalkylene radical.
Claim 3
Dependent Claim
25 words
The hydrogel of claim 1 wherein X and Y are hydroperfluoro wherein the alkyl of X and Y is C 1 to C 8 .
Claim 4
Dependent Claim
25 words
The hydrogel of claim 2 wherein X and Y are hydroperfluoro wherein the alkyl of X and Y is C 1 to C 3 .
Claim 5
Dependent Claim
13 words
The hydrogel of claim 1 wherein the hydroxyfluoroalkyl sytrene monomer is [p-(2-hydroxyfluoroisopropyl)styrene] p-(2-hydroxyhexafluoroisopropyl)styrene.
Claim 6
Dependent Claim
23 words
The hydrogel of claim 1 wherein the amount of hydroxyfluoroalkyl styrene is from about 10% to about 30% by weight of said hydrogel.
Claim 7
Dependent Claim
24 words
The hydrogel of claim 1 wherein the hydrogel forming monomer is hydroxyalkyl acrylate or methacrylate of a lower C 1 to C 8 alkyl.
Claim 8
Dependent Claim
13 words
The hydrogel of claim 6 wherein the hydroxy alkyl monomer is hydroxyethyl methacrylate.
Claim 9
Dependent Claim
22 words
The hydrogel of claim 1 wherein the hydroxyalkyl acrylate or methacrylate is from about 70% to 90% by weight of said hydrogel.
Claim 10
Dependent Claim
13 words
The hydrogel of claim 1 wherein the hydrogel forming monomer is N-vinyl pyrrolidone.
Claim 11
Dependent Claim
15 words
The hydrogel of claim 1 which includes from about 0.1% to about 5% cross-linking agent.
Claim 12
Dependent Claim
48 words
The hydrogel of claim 1 which includes from about 0% to about 40% of a properties modifying organic hydrophobic monomer selected from the group consisting of C 1 to C 8 alkyl methacrylates and acrylates, cycloalkyl methacrylates and acrylates, styrene, t-butyl styrene and other ring substituted alkyl styrenes.
Claim 13
Dependent Claim
12 words
The hydrogel of claim 1 wherein the hydrophobic monomer is methyl methacrylate.
Claim 14
Dependent Claim
21 words
The hydrogel of claim 12 wherein the methyl methacrylate is present in an amount from 15% to 30% of said material.
Claim 15
Dependent Claim
75 words
A contact lenses comprising from about 40% to about 95% of a comonomer of comonomers that will form a hydrogel and from about 5% to about 60% by weight of a hydrozyfluoroalkyl styrene monomer of the formula: ##STR4## wherein X and Y are each selected from the group consisting of perfluoroalkyl, ω-hydrofluoroalkyl, and ω-chloroperfluoroalkyl radicals wherein the alkyl of X and Y is C 1 to C 8 , or jointly a divalent perfluoroalkylene radical.
Claim 16
Dependent Claim
75 words
A contact lenses comprising from about 40% to about 95% of a comonomer of comonomers that will form a hydrogel and from about 5% to about 60% by weight of a hydrozyfluoroalkyl styrene monomer of the formula: ##STR4## wherein X and Y are each selected from the group consisting of perfluoroalkyl, ω-hydrofluoroalkyl, and ω-chloroperfluoroalkyl radicals wherein the alkyl of X and Y is C 1 to C 8 , or jointly a divalent perfluoroalkylene radical.
Claim 17
Dependent Claim
26 words
The contact lens of claim 14 wherein X and Y are hydroperfluoro wherein the alkyl of X and Y is C 1 to C 8 .
Claim 18
Dependent Claim
26 words
The contact lens of claim 15 wherein X and Y are hydroperfluoro wherein the alkyl of X and Y is C 1 to C 3 .
Claim 19
Dependent Claim
14 words
The contact lens of claim 14 wherein the hydroxyfluoroalkyl sytrene monmer is [p-(2-hydroxyfluoroisopropyl)styrene] p-(2-hydroxyhexafluoroisopropyl)styrene.
Claim 20
Independent Claim
103 words
A method of perparing a contact lens of the hydrogel type which has improved mechanical properties, said method comprising: copolymerizing with a monomer that is capable of forming a hydrogel, from about 40% to about 95% by weight of a comonomer or comonomers that will form a hydrogel and from about 5% to about 60% by weight of a hydroxyfluoroalkyl styrene monomer of the formula: ##STR5## wherein X and Y are each selected from the group consisting of perfluoroalkyl, ω-hydrofluoroalkyl, and ω-chloroperfluoroalkyl radicals wherein the alkyl of X and Y is C 1 to C 8 , or jointly a divalent perfluoroalkylene radical.
Claim 21
Independent Claim
103 words
A method of perparing a contact lens of the hydrogel type which has improved mechanical properties, said method comprising: copolymerizing with a monomer that is capable of forming a hydrogel, from about 40% to about 95% by weight of a comonomer or comonomers that will form a hydrogel and from about 5% to about 60% by weight of a hydroxyfluoroalkyl styrene monomer of the formula: ##STR5## wherein X and Y are each selected from the group consisting of perfluoroalkyl, ω-hydrofluoroalkyl, and ω-chloroperfluoroalkyl radicals wherein the alkyl of X and Y is C 1 to C 8 , or jointly a divalent perfluoroalkylene radical.
Claim 22
Dependent Claim
25 words
The method of claim 18 wherein X and Y are hydroperfluoro wherein the alkyl of X and Y is C 1 to C 8 .
Claim 23
Dependent Claim
25 words
The method of claim 19 wherein X and Y are hydroperfluoro wherein the alkyl of X and Y is C 1 to C 3 .
Claim 24
Dependent Claim
12 words
An intraocular lens comprised of the hydrogel polymeric material of claim 1.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-02-02 | 1990-08-04 | 1991-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-02 | 1994-08-04 | 1995-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-02 | 1998-08-04 | 1999-02-03 | $7700.00 | Window Closed / Lapsed |