US4161407A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crosslinkable polymers having vinylsulfonyl groups or styrylsulfonyl groups and their use as hardeners for gelatin
Assignee: Eastman Kodak Co
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Filing: 1977-10-06
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Granted: 1979-07-17
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Expires: 1997-10-06
Abstract
Abstract Polymers containing pendent substituted ethylsulfonyl, vinylsulfonyl or styrylsulfonyl groups are useful as gelatin hardeners or can be crosslinked by bis-nucleophiles or by exposure to ultraviolet light.
Inventors
- 👤 Gerald A. Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:57
CPC Classifications
C; C08; C08F; C08F228/00; C08F228/02; C08F212/00; C08F212/02; C08F212/04; C08F212/14; C08F212/16; C08F212/18; G; G03; G03C; G03C1/00; G03C1/005; G03C1/04; G03C1/053; G03C1/76; G03C1/825; G03C1/835; G03C8/00; G03C8/42; G03C8/52; G03C8/56; G03F; G03F7/00; G03F7/004; G03F7/038; G03F7/0388
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
138 words
A polymer having repeating units having the formula: ##STR7## where A is a polymerized α,β-ethylenically unsaturated addition polymerizable monomer or a mixture of such polymerizable monomers, x is a molar unit of from 10 to 95, and y is a molar unit of from 5 to 90, L is a linking group selected from the group consisting of alkylene, arylene, COZ and COZR 3 , R 3 is selected from the group consisting of alkylene and arylene, Z is O or NH, R is hydrogen or alkyl having 1 to 6 carbon atoms, and R' is --CH═CHR 2 or --CH 2 CH 2 X where X is a leaving group which can be displaced by a nucleophile or can be eliminated in the form of HX upon treatment with base and R 2 is hydrogen, alkyl or aryl.
Claim 2
Dependent Claim
138 words
A polymer having repeating units having the formula: ##STR7## where A is a polymerized α,β-ethylenically unsaturated addition polymerizable monomer or a mixture of such polymerizable monomers, x is a molar unit of from 10 to 95, and y is a molar unit of from 5 to 90, L is a linking group selected from the group consisting of alkylene, arylene, COZ and COZR 3 , R 3 is selected from the group consisting of alkylene and arylene, Z is O or NH, R is hydrogen or alkyl having 1 to 6 carbon atoms, and R' is --CH═CHR 2 or --CH 2 CH 2 X where X is a leaving group which can be displaced by a nucleophile or can be eliminated in the form of HX upon treatment with base and R 2 is hydrogen, alkyl or aryl.
Claim 3
Dependent Claim
24 words
The polymer of claim 1 wherein X is selected from the group consisting of chloro, bromo, iodo, acetoxy, methylsulfonyloxy, trimethylammonio salt, and pyridinio salt.
Claim 4
Dependent Claim
31 words
The polymer of claim 1 wherein A is 2-acrylamido-2-methylpropanesulfonic acid, acrylamide, vinylbenzyl chloride, styrene, or maleic anhydride, x is an integer of 1 to 9, and y is 9 to 1.
Claim 5
Dependent Claim
9 words
The polymer of claim 1 wherein L is phenylene.
Claim 6
Dependent Claim
9 words
The polymer of claim 1 having the structure: ##STR8##
Claim 7
Dependent Claim
9 words
The polymer of claim 1 having the structure: ##STR9##
Claim 8
Dependent Claim
9 words
The polymer of claim 1 having the structure: ##STR10##
Claim 9
Dependent Claim
10 words
A composition comprising the polymer of claim 1 and gelatin.
Claim 10
Dependent Claim
14 words
A photographic element comprising a silver halide emulsion and the polymer of claim 1.
Claim 11
Dependent Claim
9 words
The photographic element of claim 9 also comprising gelatin.
References Cited (Backward Citations)
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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) | 1982-07-16 | 1983-01-15 | 1983-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-07-16 | 1987-01-15 | 1987-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-07-16 | 1991-01-15 | 1991-07-17 | $7700.00 | Window Closed / Lapsed |