EP0098072A2
Expired / Lapsed
EP
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Color photographic elements containing scavengers for oxidized developing agents
Assignee: Eastman Kodak Co
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Filing: 1983-06-14
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Granted: —
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Expires: 2003-06-14
Abstract
Abstract Scavengers for oxidized developing agents in color photographic elements are 2,4-disulfonamidophenols, or alkali labile precursors of such phenols, for example compounds of the formula: <CHEM> wherein: G is hydroxy or an alkali labile precursor thereof; each R<1> is individually alkyl, aryl or heterocyclyl containing one or more ring hetero atoms; and R<2>, R<3> and R<4> are each individually hydrogen, halogen alkyl, alkoxy, aryl or aryloxy, the scavenger being of sufficient bulk so as to be non-diffusible in the layers of the element
Inventors
- 👤 Robert Edward Ross
- 👤 Wilbur Seth Gaugh
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 16:27
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/392; G03C7/39208; G03C7/39212; G03C7/39216
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
37 words
A color photographic element comprising a support, at least one silver halide emulsion layer, and a scavenger for oxidized developing agent, characterized in that the scavenger is a 2,4-disulfonamidophenol or an alkali labile precursor of such phenol.
Claim 2
Dependent Claim
37 words
A color photographic element comprising a support, at least one silver halide emulsion layer, and a scavenger for oxidized developing agent, characterized in that the scavenger is a 2,4-disulfonamidophenol or an alkali labile precursor of such phenol.
Claim 3
Dependent Claim
137 words
A photographic element of Claim 1, characterized in that the scavenger has the structural formula: wherein: G is hydroxy or an alkali labile precursor thereof; each R 1 is individually alkyl of 1 to 30 carbon atoms, or aryl of 6 to 30 carbon atoms or heterocyclyl of 5 to 30 atoms containing one or more ring hetero atoms selected from nitrogen, oxygen, sulfur and selenium; and R 2 , R 3 and R 4 are each individually hydrogen, halogen, alkyl of 1 to 30 carbon atoms, alkoxy of 1 to 30 carbon atoms, aryl of 6 to 30 carbon atoms or aryloxy of 6 to 30 carbon atoms, the alkyl, alkoxy, aryl and aryloxy groups being optionally substituted and the scavenger being of sufficient bulk so as to be non-diffusible in the layers of the element.
Claim 4
Dependent Claim
23 words
A photographic element of Claims 1 or 2, characterized in that the scavenger is in an interlayer between two silver halide emulsion layers.
Claim 5
Dependent Claim
20 words
A photographic element of Claims 1 or 2, characterized in that the scavenger is in a silver halide emulsion layer.
Claim 6
Dependent Claim
25 words
A photographic element of any of Claims 1 to 4, characterized in that the silver halide emulsion layer has associated therewith an image dye-providing material.
Claim 7
Dependent Claim
17 words
A photographic element of Claim 5, characterized in that the image dye-providing material is a dye-forming coupler.
Claim 8
Dependent Claim
18 words
A photographic element of any of Claims 1 to 6, characterized in that the scavenger has the formula:
Claim 9
Dependent Claim
18 words
A photographic element of any of Claims 1 to 6, characterized in that the scavenger has the formula:
Claim 10
Dependent Claim
18 words
A photographic element of any of Claims 1 to 6, characterized in that the scavenger has the formula:
References Cited (Backward Citations)
No citation records indexed.
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