US3647464A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sulfonated poly(vinyl alcohol) derivatives as absorbent layers in photographic processing webs
Assignee: Eastman Kodak Co
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Filing: 1970-04-22
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Granted: 1972-03-07
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Expires: 1990-04-22
Abstract
Abstract A photographic processing web comprising a support having an absorbent layer for alkaline photographic processing solutions, said layer comprising a cross-linked polymer product of a polymer composed of recurring segments having the structure: WHEREIN K INDICATES ABOUT 64 TO 95 MOLE PERCENT, L INDICATES ABOUT 0 TO 15 MOLE PERCENT, M INDICATES ABOUT 5 TO 20 MOLE PERCENT, N INDICATES ABOUT 0 TO 10 MOLE PERCENT; X is SO3- or SO3Z wherein Z is an alkali metal or hydrogen; R'' is an alkylamino group; Y is a radical containing an active methylene group and R is a phenylene group or the positively charged portion of an inner salt having the structure: WHEREIN A and B are alkylene groups and R'''' is hydrogen or an alkyl group, with the proviso that when R is the positively charged portion of an inner salt, X is SO3-, said layer having incorporated therein a silver precipitating agent.
Inventors
- 👤 Donald A Smith
- 👤 Joseph A Verdone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:47
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/24; G03C8/26; G03C8/28; C; C07; C07D; C07D319/00; C07D319/04; C07D319/06; C08; C08F; C08F8/00; C08F8/48; C08J; C08J5/00; C08J5/18; G03C1/00; G03C1/005; G03C1/04; G03C1/053; G03C5/00; G03C5/26; G03C5/261; C08F2810/00; C08F2810/20
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
13 words
A photographic element of claim 1 wherein said layer is on a support.
Claim 2
Dependent Claim
19 words
A photographic processing web comprising the element of claim 2 wherein said absorbent layer contains a photographic processing solution.
Claim 3
Dependent Claim
14 words
A photographic element of claim 1 wherein said layer comprises a silver precipitating agent.
Claim 4
Dependent Claim
17 words
A photographic element of claim 1 wherein said cross-linked polymer product is a dialdehyde cross-linked polymer product.
Claim 5
Dependent Claim
12 words
The photographic element of claim 1 wherein - R'' - Y is
Claim 6
Dependent Claim
22 words
A photographic element of claim 1 wherein the cross-linked polymer product is of a polymer composed of recurring segments having the structure:
Claim 7
Dependent Claim
18 words
A photographic element of claim 7 wherein said layer comprises an absorbent layer containing a photographic processing solution.
Claim 8
Dependent Claim
22 words
A photographic element of claim 1 wherein the cross-linked polymer product is of a polymer composed of recurring segments having the structure:
Claim 9
Dependent Claim
18 words
A photographic element of claim 9 wherein said layer comprises an absorbent layer containing a photographic processing solution.
Claim 10
Dependent Claim
16 words
A photographic element of claim 9 wherein the cross-linked product is a dialdehyde cross-linked polymer product.
Claim 11
Dependent Claim
12 words
A photographic element of claim 2 wherein said support is a polyester.
Claim 12
Dependent Claim
22 words
A photographic element of claim 2 wherein said element is provided with a sub layer for adhering said support to said layer.
Claim 13
Dependent Claim
22 words
A photographic element of claim 1 wherein said cross-linked polymer product is of a polymer having recurring segments having the following structure.
Claim 14
Dependent Claim
21 words
A photographic element of claim 1 wherein said cross-linked polymer product is of a polymer having recurring segments havIng the structure:
Claim 15
Dependent Claim
21 words
A photographic element of claim 7 wherein said cross-linked polymer product is of a polymer having recurring segments having the structure:
Claim 16
Dependent Claim
21 words
The photographic element of claim 7 wherein the cross-linked polymer product is of a polymer having recurring segments having the structure:
Claim 17
Dependent Claim
14 words
A composition of matter comprising a polymer composed of recurring segments having the structure:
Claim 18
Dependent Claim
14 words
A composition of matter comprising a polymer composed of recurring segments having the structure:
Claim 19
Dependent Claim
14 words
A composition of matter comprising a polymer composed of recurring segments having the structure:
Claim 20
Dependent Claim
14 words
A composition of matter comprising a polymer composed of recurring segments having the structure:
Claim 21
Independent Claim
33 words
A method of preparing a photographic processing web which comprises coating a support with a coating composition consisting essentially of an aqueous solution of a polymer composed of recurring segments having the structure:
Claim 22
Dependent Claim
14 words
A method of claim 22 comprising incorporating in said composition a silver precipitating agent.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-03-07 | 1975-09-06 | 1976-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-07 | 1979-09-06 | 1980-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-07 | 1983-09-06 | 1984-03-07 | $7700.00 | Window Closed / Lapsed |