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US3935263A
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Oxichromic compounds, stabilized oxichromic compounds and processes for preparing same
Assignee: Eastman Kodak Co
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Filing: 1973-12-19
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Granted: 1976-01-27
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Expires: 1993-12-19
Abstract
Abstract Oxichromic compounds which contain a reduced azomethine linkage are disclosed with processes for making same. In one aspect, the oxichromic compounds are N-stabilized compounds which have an acyl stabilizing group on the nitrogen atom of the reduced azomethine linkage. The compounds undergo chromogenic oxidation to produce dyes.
Inventors
- 👤 Gregory James Lestina
- 👤 Walter Monroe Bush
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:57
CPC Classifications
C; C07; C07D; C07D487/00; C07D487/02; C07D487/04; C09; C09B; C09B55/00; G; G03; G03C; G03C5/00; G03C5/26; G03C5/29; G03C5/30; G03C5/3021; G03C7/00; G03C7/30; G03C7/305; G03C7/30541; G03C7/32; G03C7/3212; G03C8/00; G03C8/02; G03C8/08; G03C8/10; G03C8/12; G03C8/14; G03C8/16; G03C8/18
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
111 words
A compound having the formula: ##EQU9## wherein (COUP) is a photographic color coupler connected to said nitrogen atom in said formula at the coupling position to provide a reduced azomethine linkage; Ar is an aromatic group containing a carbocyclic arylene nucleus and comprises from 6 to 20 carbon atoms; R 2 is a carbonyl-containing group of the formula: ##EQU10## wherein R 4 is a) an alkyl group or substituted alkyl group containing from 1 to 12 carbon atoms or b) an aryl group or substituted aryl group containing from 6 to 12 carbon atoms; and X is an hydroxy group, an amino group, an alkylamino group, or the group: ##EQU11## .
Claim 2
Dependent Claim
111 words
A compound having the formula: ##EQU9## wherein (COUP) is a photographic color coupler connected to said nitrogen atom in said formula at the coupling position to provide a reduced azomethine linkage; Ar is an aromatic group containing a carbocyclic arylene nucleus and comprises from 6 to 20 carbon atoms; R 2 is a carbonyl-containing group of the formula: ##EQU10## wherein R 4 is a) an alkyl group or substituted alkyl group containing from 1 to 12 carbon atoms or b) an aryl group or substituted aryl group containing from 6 to 12 carbon atoms; and X is an hydroxy group, an amino group, an alkylamino group, or the group: ##EQU11## .
Claim 3
Dependent Claim
22 words
A compound according to claim 1 wherein (COUP) is an open-chain ketomethylene color coupler, a phenolic coupler or a pyrazolone color coupler.
Claim 4
Dependent Claim
21 words
A compound according to claim 1 wherein R 4 is a polyhalogenated alkyl group containing from 1 to 12 carbon atoms.
Claim 5
Dependent Claim
13 words
A compound according to claim 1 wherein Ar is a halogen-substituted phenylene group.
Claim 6
Dependent Claim
12 words
A compound according to claim 1 wherein X is an hydroxy group.
Claim 7
Dependent Claim
88 words
A compound having the formula: ##EQU12## wherein (COUP) is a photographic color coupler which is an open-chain ketomethylene color coupler, a phenolic color coupler or a pyrazolone color coupler; Ar is a benzenoid group; R 2 is a carbonyl-containing group of the formula: ##EQU13## wherein R 4 is a) an alkyl group or substituted alkyl group containing from 1 to 12 carbon atoms or b) an aryl group or substituted aryl group containing from 6 to 12 carbon atoms; and X is an hydroxy group or the group.
Claim 8
Dependent Claim
88 words
A compound having the formula: ##EQU12## wherein (COUP) is a photographic color coupler which is an open-chain ketomethylene color coupler, a phenolic color coupler or a pyrazolone color coupler; Ar is a benzenoid group; R 2 is a carbonyl-containing group of the formula: ##EQU13## wherein R 4 is a) an alkyl group or substituted alkyl group containing from 1 to 12 carbon atoms or b) an aryl group or substituted aryl group containing from 6 to 12 carbon atoms; and X is an hydroxy group or the group.
Claim 9
Dependent Claim
13 words
A compound according to claim 6 wherein Ar is a halogenated phenylene group.
Claim 10
Dependent Claim
14 words
A compound according to claim 6 wherein (COUP) is an open-chain ketomethylene color coupler.
Claim 11
Dependent Claim
13 words
A compound according to claim 6 wherein (COUP) is a phenolic color coupler.
Claim 12
Dependent Claim
13 words
A compound according to claim 6 wherein (COUP) is a pyrazolone color coupler.
References Cited (Backward Citations)
US3751406A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-01-26 | 1979-07-28 | 1980-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-26 | 1983-07-28 | 1984-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-26 | 1987-07-28 | 1988-01-27 | $7700.00 | Window Closed / Lapsed |