US4346155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic products and processes employing novel nondiffusible 6-arylazo-3-pyridinol magenta dye-releasing compounds and percursors thereof
Assignee: Eastman Kodak Co
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Filing: 1981-08-24
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Granted: 1982-08-24
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Expires: 2001-08-24
Abstract
Abstract Photographic elements, diffusion transfer assemblages and processes are described which employ a novel nondiffusible compound having a releasable 6-arylazo-3-pyridinol magenta dye moiety or precursor thereof having the formula: ##STR1## wherein: (a) R represents hydroxy or amino; (b) R 1 represents hydrogen, a hydrolyzable moiety or CAR; (c) G represents carboxy; a hydrolyzable ester or a sulfamoyl group; (d) CAR represents a ballasted carrier moiety capable of releasing the diffusible 6-arylazo-3-pyridinol dye moiety or precursor thereof under alkaline conditions; and (e) n is 0, 1 or 2, with the proviso that when n is 0, then R 1 is CAR.
Inventors
- 👤 Derek D. Chapman
- 👤 James A. Reczek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:40
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/02; G03C8/08; G03C8/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
132 words
A photographic element comprising a support having thereon a layer comprising a photographic mordant having bound thereto a coordination complex of a polyvalent metal ion and a compound having the formula: ##STR33## wherein: R represents hydroxy or amino; and G represents carboxy; a hydrolyzable ester group having the formula COOR 2 , wherein R 2 is an alkyl or substituted alkyl group having 1 to about 8 carbon atoms or an aryl or substituted aryl group having 6 to about 10 carbon atoms; or a sulfamoyl group having the formula SO 2 NHR 3 wherein R 3 represents hydrogen, alkyl or substituted alkyl having 1 to about 8 carbon atoms, aryl or substituted aryl having 6 to about 10 carbon atoms, or an acyl group having 1 to about 8 carbon atoms.
Claim 2
Dependent Claim
132 words
A photographic element comprising a support having thereon a layer comprising a photographic mordant having bound thereto a coordination complex of a polyvalent metal ion and a compound having the formula: ##STR33## wherein: R represents hydroxy or amino; and G represents carboxy; a hydrolyzable ester group having the formula COOR 2 , wherein R 2 is an alkyl or substituted alkyl group having 1 to about 8 carbon atoms or an aryl or substituted aryl group having 6 to about 10 carbon atoms; or a sulfamoyl group having the formula SO 2 NHR 3 wherein R 3 represents hydrogen, alkyl or substituted alkyl having 1 to about 8 carbon atoms, aryl or substituted aryl having 6 to about 10 carbon atoms, or an acyl group having 1 to about 8 carbon atoms.
Claim 3
Dependent Claim
14 words
The photographic element of claim 1 wherein R represents hydroxy and G represents carboxy.
Claim 4
Dependent Claim
24 words
The photographic element of claim 1 wherein the metal ion is nickel (II), copper (II), zinc (II), platinum (II), palladium (II) or cobalt (II).
References Cited (Backward Citations)
US4193916A
Cited
US4195994A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-08-23 | 1986-02-22 | 1986-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-23 | 1990-02-22 | 1990-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-23 | 1994-02-22 | 1994-08-24 | $7700.00 | Window Closed / Lapsed |