US4307175A
Expired / Lapsed
US
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Photographic silver halide emulsion material containing an antifoggant precursor
Assignee: Agfa Gevaert NV
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Filing: 1980-09-10
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Granted: 1981-12-22
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Expires: 2000-09-10
Abstract
Abstract A photographic material comprising in at least one light-sensitive silver halide emulsion layer and/or in a hydrophilic colloid layer in water-permeable relationship with such an emulsion layer an antifoggant precursor corresponding to one of the following general formulae: ##STR1## wherein: each of Y 1 and Y 2 (same or different) is an acyl group each of Y 10 and Y 20 (same or different) is an aromatic acyl group, R is an alkyl group, an aryl group or a heterocyclic nitrogen-containing 5-, 6- or 7-membered ring, R 1 is hydrogen, an alkyl group, an aryl group, a carboxyl group in free acid, salt or esterified form, a carbamoyl group or a N-substitued carbamoyl group, R 2 is hydrogen, an alkyl group or an aryl group, R 3 has the same meaning as Y 10 , or is hydrogen, or is an alkyl group or an aryl group, or is a R 7 -S- group wherein R 7 is an alkyl group, an aryl group, or a heterocyclic group, R 4 is hydrogen, an aryl group or a heterocyclic group, R 5 is hydrogen, an alkyl group, an aryl group or a heterocyclic group, and Z represents the necessary atoms to close a heterocyclic nitrogen-containing 5-, 6- or 7-membered ring.
Inventors
- 👤 Robert J. Pollet
- 👤 Hendrik E. Kokelenberg
- 👤 Antoon L. Vandenberghe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:26
CPC Classifications
C; C07; C07D; C07D257/00; C07D257/02; C07D257/04; C07C; C07C323/00; C07D307/00; C07D307/02; C07D307/34; C07D307/38; C07D307/40; C07D307/46; G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/34; G03C1/346; G03C8/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
242 words
A photographic material which comprises a support and at least one light-sensitive silver halide emulsion layer and wherein there is at least one antifoggant precursor in the said emulsion layer and/or a hydrophilic colloid layer in water-permeable relationship with such an emulsion layer, characterized in that there is at least one said precursor which corresponds to one of the following general formulae (I A), (I B), (II A), (II B), (III A) or (III B): ##STR26## wherein: each of Y 1 and Y 2 (same or different) is an acyl group, each of Y 10 and Y 20 (same or different) is an aromatic acyl group, R is an alkyl group, an aryl group, a heterocyclic nitrogen-containing 5-, 6- or 7-membered ring, R 1 is hydrogen, an alkyl group, an aryl group, a carboxyl group in free acid, salt or esterified form, or a carbamoyl group, R 2 is hydrogen, an alkyl group or an aryl group, R 3 has the same meaning as Y 10 but need not be identical thereto, or is hydrogen, an alkyl group, an aryl group, or a R 7 -S- group wherein R 7 is an alkyl group, an aryl group, or a heterocyclic group, R 4 is hydrogen, an aryl group or a heterocyclic group, R 5 is hydrogen, an alkyl group, an aryl group or a heterocyclic group, and Z represents the necessary atoms to close a nitrogen-containing 5-, 6- or 7-membered heterocyclic ring.
Claim 2
Dependent Claim
242 words
A photographic material which comprises a support and at least one light-sensitive silver halide emulsion layer and wherein there is at least one antifoggant precursor in the said emulsion layer and/or a hydrophilic colloid layer in water-permeable relationship with such an emulsion layer, characterized in that there is at least one said precursor which corresponds to one of the following general formulae (I A), (I B), (II A), (II B), (III A) or (III B): ##STR26## wherein: each of Y 1 and Y 2 (same or different) is an acyl group, each of Y 10 and Y 20 (same or different) is an aromatic acyl group, R is an alkyl group, an aryl group, a heterocyclic nitrogen-containing 5-, 6- or 7-membered ring, R 1 is hydrogen, an alkyl group, an aryl group, a carboxyl group in free acid, salt or esterified form, or a carbamoyl group, R 2 is hydrogen, an alkyl group or an aryl group, R 3 has the same meaning as Y 10 but need not be identical thereto, or is hydrogen, an alkyl group, an aryl group, or a R 7 -S- group wherein R 7 is an alkyl group, an aryl group, or a heterocyclic group, R 4 is hydrogen, an aryl group or a heterocyclic group, R 5 is hydrogen, an alkyl group, an aryl group or a heterocyclic group, and Z represents the necessary atoms to close a nitrogen-containing 5-, 6- or 7-membered heterocyclic ring.
Claim 3
Dependent Claim
15 words
A photographic material according to claim 1, characterized in that R is a 5-(1-phenyl-tetrazolyl) group.
Claim 4
Dependent Claim
20 words
A photographic material according to claim 1, characterized in that Z represents the necessary atoms to close a 4-(1-phenyl-tetrazolyl-5-thione) group.
Claim 5
Dependent Claim
37 words
A photographic material according to claim 1, wherein an antifoggant precursor is used which corresponds with the formulae (II A) and (II B) characterized in that each of Y 10 and Y 20 represent a benzoyl group.
Claim 6
Dependent Claim
48 words
A photographic material according to claim 1, characterized in that the photographic material is for the production of dye images by image-wise transfer of a dye or dye precursor into a separate receiving material or into a receiving element forming together with the photographic material a mono-pack material.
Claim 7
Dependent Claim
30 words
A photographic material according to claim 5, characterized in that the mono-pack material includes a means for setting free an alkaline processing liquid the pH of which is above 11.5.
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) | 1984-12-21 | 1985-06-22 | 1985-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-12-21 | 1989-06-22 | 1989-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-12-21 | 1993-06-22 | 1993-12-22 | $7700.00 | Window Closed / Lapsed |