Patent US4605613A successfully refreshed from Google Patents.
US4605613A
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Ballasted dye compounds with linkages containing three aromatic nuclei for use in a dye diffusion transfer process and element
Assignee: Agfa Gevaert NV
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Filing: 1985-07-26
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Granted: 1986-08-12
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Expires: 2005-07-26
Abstract
Abstract Photographic silver halide emulsion material for use in a dye diffusion transfer process incorporating a non-diffusing compound capable of releasing a diffusible mono-azo dye or dye precursor thereof from a carrier moiety, said compound corresponding to the following general formula (I): (I) CAR--L--G--D wherein: CAR represents a ballasted carrier moiety, L represents a chemical group cleavable or releasable from the carrier moiety as a function of a redox-reaction or argentolytic reaction taking place in the development of a silver halide emulsion layer under alkaline conditions, G represents a bivalent organic group incorporating at least three aromatic nuclei, selected from the group consisting of homocyclic or heterocyclic aromatic nuclei, with the provisions that L is linked to one end nucleus and that D is linked to the other end nucleus of said bivalent organic group; said linking being by means of a direct bond or by means of a bivalent mono- or polyatomic group, and D is an azo dye part linked to said other end aromatic nucleus of G.
Inventors
- 👤 Christian C. Van de Sande
- 👤 Armand M. Van den Bergh
- 👤 Wilhelmus Janssens
- 👤 Hans Vetter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:52
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/02; G03C8/08; G03C8/10
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
262 words
A photographic silver halide emulsion material containing a ballasted non-diffusing compound capable of releasing a diffusible mono-azo dye or dye precursor thereof from a carrier moiety, characterized in that said compound corresponds to the following general formula: ##STR32## wherein: CAR represents a ballasted carrier moiety making said compound non-diffusing in a hydrophilic colloid medium after wet alkaline conditions, L represents a chemical group cleavable or releasable from the carrier moiety as a function of a redox-reaction or argentolytic reaction taking place in the development of a silver halide emulsion layer under alkaline conditions, G 1 and G 3 (same or different) is a --SO 2 NR 3 -- or --NR 3 --SO 2 -- group wherein R 3 is hydrogen, an alkyl group or an aryl group, G 2 is a chemical bond or a bivalent linking atom or group selected from the group consisting of --O--, --S--, --SO 2 --, --CH 2 --, --CH 2 CH 2 --, --NH 3 --, --OCH 2 CH 2 O--, --OCH 2 CH 2 --, --CONR 3 --, --SO 2 NR 3 --, --NR 3 CO-- or --NR 3 SO 2 --, wherein R 3 is hydrogen, an alkyl group or an aryl group, R i , R j and R k (same or different) is hydrogen or one or more substituents selected from the group consisting of halogen, an alkyl group, alkoxy, alkylthio, a R 4 CONH-- group or a R 4 SO 2 NH-- group, wherein R 4 is an alkyl group or an aryl group, and D is an azo dye part.
Claim 2
Dependent Claim
262 words
A photographic silver halide emulsion material containing a ballasted non-diffusing compound capable of releasing a diffusible mono-azo dye or dye precursor thereof from a carrier moiety, characterized in that said compound corresponds to the following general formula: ##STR32## wherein: CAR represents a ballasted carrier moiety making said compound non-diffusing in a hydrophilic colloid medium after wet alkaline conditions, L represents a chemical group cleavable or releasable from the carrier moiety as a function of a redox-reaction or argentolytic reaction taking place in the development of a silver halide emulsion layer under alkaline conditions, G 1 and G 3 (same or different) is a --SO 2 NR 3 -- or --NR 3 --SO 2 -- group wherein R 3 is hydrogen, an alkyl group or an aryl group, G 2 is a chemical bond or a bivalent linking atom or group selected from the group consisting of --O--, --S--, --SO 2 --, --CH 2 --, --CH 2 CH 2 --, --NH 3 --, --OCH 2 CH 2 O--, --OCH 2 CH 2 --, --CONR 3 --, --SO 2 NR 3 --, --NR 3 CO-- or --NR 3 SO 2 --, wherein R 3 is hydrogen, an alkyl group or an aryl group, R i , R j and R k (same or different) is hydrogen or one or more substituents selected from the group consisting of halogen, an alkyl group, alkoxy, alkylthio, a R 4 CONH-- group or a R 4 SO 2 NH-- group, wherein R 4 is an alkyl group or an aryl group, and D is an azo dye part.
Claim 3
Dependent Claim
42 words
Material according to claim 1, wherein L is --S--, --SO 2 --, --NHSO 2 -- or --N + R 1 R 2 --, wherein each of R 1 and R 2 (same or different) is an alkyl group or an aryl group.
Claim 4
Dependent Claim
14 words
Material according to claim 1, wherein CAR is a hydroquinone or quinone type residue.
Claim 5
Dependent Claim
62 words
Material according to claim 1, comprising a support carrying red-, green- and blue-sensitive silver halide emulsion layers each having operatively associated therewith a said dye-releasing compound that is initially immobile in an alkali-permeable colloid medium and wherefrom through the reducing action of a silver halide developing agent and alkalinity a cyan, magenta or yellow dye respectively is splittable off in diffusible state.
Claim 6
Dependent Claim
26 words
Material according to claim 4, wherein said photographic material contains in each silver halide emulsion layer a non-diffusible electron donor compound or electron donor precursor compound.
Claim 7
Dependent Claim
19 words
Material according to claim 1, wherein said photographic material contains (a) silver halide emulsion layer(s) of the negative-working type.
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) | 1989-08-11 | 1990-02-10 | 1990-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-11 | 1994-02-10 | 1994-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-11 | 1998-02-10 | 1998-08-12 | $7700.00 | Window Closed / Lapsed |