Patent US4640965A successfully refreshed from Google Patents.
US4640965A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrogel compositions using p-(2-hydroxyhexafluoroisopropyl) styrene as a comonomer
Assignee: Alcon Vision LLC
•
Filing: 1986-01-07
•
Granted: 1987-02-03
•
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 08:56
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.
References Cited (Backward Citations)
US3220960A
Cited
US3179640A
Cited
US3499862A
Cited
US4095877A
Cited
US4433111A
Cited
US4436887A
Cited
US4440919A
Cited
US4451630A
Cited
US4492776A
Cited
US4528325A
Cited
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 |