US4663273A
Expired / Lapsed
US
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Non-diffusing compounds capable of releasing a diffusible dye or dye precursor compound with multiple dye units
Assignee: Agfa Gevaert NV
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Filing: 1986-06-16
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Granted: 1987-05-05
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Expires: 2006-06-16
Abstract
Abstract 1. A photographic silver halide emulsion material which contains in operative contact with at least one alkali-permeable silver halide hydrophilic colloid emulsion layer a ballasted non-diffusing compound capable of releasing a diffusible dye or dye precursor corresponding to the following general formula: CAR--L--D wherein: CAR represents a carrier moiety, L represents a chemical group cleavable or releasable from the carrier moiety by a redox-reaction in alkaline aqueous medium, and D represents a dye or dye precursor part containing: (i) several dye units or dye precursor units that are linked chemically to each other by: a non-metal atom bearing only single bonds, a polyvalent atom group wherein one atom links the dye units together by single bonds only, or a polyvalent atom group forming between the dye units a chain of atoms wherein at least one atom of the interlinking atoms of the backbone part of said chain has two consecutive single bonds in said backbone part, and (ii) incorporating one or more groups that improve the diffusibility of the released dye part or dye precursor part in a hydrophilic colloid medium when permeated by an aqueous alkaline liquid.
Inventors
- 👤 Christian C. Van de Sande
- 👤 Armand M. Van den Bergh
- 👤 Andre Verhecken
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:51
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/02; G03C8/08; G03C8/10
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
188 words
A photographic silver halide emulsion material which contains in operative contact with at least one alkali-permeable silver halide hydrophilic colloid emulsion layer a ballasted non-diffusing compound capable of releasing a diffusible dye or dye precursor corresponding to the following general formula: CAR--L--D wherein: CAR represents a carrier moiety, L represents a chemical group cleavable or releasable from the carrier moiety by a redox-reaction in alkaline aqueous medium, and D represents a dye or dye precursor part containing: (i) several dye units or dye precursor units that are linked chemically to each other by: a non-metal atom bearing only single bonds, or a polyvalent atom group wherein one atom links the dye units together by single bonds only, or a polyvalent atom group forming between the dye units a chain of atoms wherein at least one atom of the interlinking atoms of the backbone part of said chain has two consecutive single bonds in said backbone part, and (ii) incorporating one or more groups that improve the diffusibility of the released dye part or dye precursor part in a hydrophilic colloid medium when permeated by an aqueous alkaline liquid.
Claim 2
Dependent Claim
188 words
A photographic silver halide emulsion material which contains in operative contact with at least one alkali-permeable silver halide hydrophilic colloid emulsion layer a ballasted non-diffusing compound capable of releasing a diffusible dye or dye precursor corresponding to the following general formula: CAR--L--D wherein: CAR represents a carrier moiety, L represents a chemical group cleavable or releasable from the carrier moiety by a redox-reaction in alkaline aqueous medium, and D represents a dye or dye precursor part containing: (i) several dye units or dye precursor units that are linked chemically to each other by: a non-metal atom bearing only single bonds, or a polyvalent atom group wherein one atom links the dye units together by single bonds only, or a polyvalent atom group forming between the dye units a chain of atoms wherein at least one atom of the interlinking atoms of the backbone part of said chain has two consecutive single bonds in said backbone part, and (ii) incorporating one or more groups that improve the diffusibility of the released dye part or dye precursor part in a hydrophilic colloid medium when permeated by an aqueous alkaline liquid.
Claim 3
Dependent Claim
224 words
Photographic material according to claim 1, wherein the group D corresponds to the following general formula: --(A).sub.x [--B(--C).sub.y ].sub.z wherein: A is L 1 , L 1 D 1 or D 1 , B is L 2 , L 2 D 2 or D 2 , C is L 3 , L 3 D 3 or D 3 , x is 0 or 1, y is 0, 1, 2 or 3, and z is 1, 2 or 3, so that the above formula comprises at least 2 members selected from D 1 , D 2 and D 3 and that when y and/or z are 2 or 3, both the several B-groups and the several C-groups have the same or different meaning, and wherein: each of L 1 , L 2 and L 3 (the same or different) represents: a non-metal atom bearing only single bonds or a polyvalent atom group wherein one atom links the dye units together by single bonds only, or a polyvalent atom group forming between the dye units a chain of atoms wherein at least one atom of the interlinking atoms of the backbone part of said chain has two consecutive single bonds in said backbone part, and each of D 1 , D 2 and D 3 (the same or different) represents a dye or dye precursor unit.
Claim 4
Dependent Claim
27 words
Photographic material according to claim 2, wherein said general formula comprises from 2 to 5 members selected from D 1 , D 2 and D 3 .
Claim 5
Dependent Claim
79 words
Photographic material according to claim 1, wherein the group D incorporates one or more groups that improve the diffusibility of the released dye part or dye precursor part in a hydrophilic colloid medium when permeated by an aqueous alkaline liquid, said groups being selected from the group consisting of hydroxyl, ether, thio-ether, carbonamido, sulphonamido, carbamoyl, sulphamoyl, onium, amino, sulphonyl, ureido, cyano, carboxylic acid, sulphinic acid, sulphonic acid, phosphonic acid and salts and ester groups derived from these acidic groups.
Claim 6
Dependent Claim
19 words
Photographic material according to claim 1, wherein the group D corresponds to one of the following structural formulae: ##STR34##
Claim 7
Dependent Claim
12 words
Photographic material according to claim 1, wherein CAR comprises a quinonoid nucleus.
Claim 8
Dependent Claim
18 words
Photographic material according to claim 1, wherein CAR--L-- is a member selected from the group consisting of: ##STR35##
Claim 9
Dependent Claim
28 words
Photographic material according to claim 1, wherein the compound is a reducible quinonoid IHR-compound which after reduction can undergo a dye release with an intermolecular nucleophilic displacement reaction.
Claim 10
Dependent Claim
24 words
Photographic material according to claim 1, wherein the compound is a reducible quinonoid IHR-compound which can undergo a dye release by an elimination reaction.
Claim 11
Dependent Claim
119 words
Photographic material according to claim 1, wherein said material comprises a support carrying (1) a red-sensitive silver halide emulsion layer 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 dye is split off in diffusible state, (2) a green-sensitive silver halide emulsion layer having operatively associated therewith a said compound of (1) with the difference that a magenta dye is split off in diffusible state, and (3) a blue-sensitive silver halide emulsion layer having operatively associated therewith a said compound of (1) with the difference that a yellow dye is split off in diffusible state.
Claim 12
Dependent Claim
26 words
Photographic material according to claim 1, wherein said material contains in each silver halide emulsion layer a non-diffusible electron donor compound or electron donor precursor compound.
Claim 13
Dependent Claim
20 words
Photographic material according to claim 1, wherein said material contains (a) silver halide emulsion layer(s) of the negative working type.
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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) | 1990-05-04 | 1990-11-03 | 1991-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-04 | 1994-11-03 | 1995-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-04 | 1998-11-03 | 1999-05-05 | $7700.00 | Window Closed / Lapsed |