US4579816A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Yellow DIR coupler with 5-furyl(1,2,4-triazole) coupling off group
Assignee: Agfa Gevaert AG
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Filing: 1985-07-15
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Granted: 1986-04-01
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Expires: 2005-07-15
Abstract
Abstract Yellow DIR couplers corresponding to formula I below are capable of producing remarkably powerful inhibitory effects on remote layers while their action on the layer containing them is comparatively slight: ##STR1## In the above formula, R 1 represents straight-chained or branched alkyl, optionally substituted aryl or --NR 5 R 6 , R 2 , R 5 represent H or alkyl with 1 or 2 carbon atoms, R 3 , R 6 represent alkyl with 1 to 18 carbon atoms or optionally substituted aryl, R 4 represents alkyl with 5 to 12 carbon atoms, and Fu represents a substituted or unsubstituted furyl group.
Inventors
- 👤 Hans Ohlschlager
- 👤 Ulrich Griesel
- 👤 Heinrich Odenwalder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:53
CPC Classifications
C; C07; C07D; C07D407/00; C07D407/02; C07D407/04; G; G03; G03C; G03C7/00; G03C7/30; G03C7/305; G03C7/30511; G03C7/30517; G03C7/30535; Y; Y10; Y10S; Y10S430/00; Y10S430/156; Y10S430/158
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
119 words
A colour photographic recording material having at least one light-sensitive silver halide emulsion layer and, associated with this layer, a DIR coupler which carries, in the coupling position, a yellow coupler attached to a 1,2,4-triazolyl group which can be split off, characterised in that the DIR coupler corresponds to the following formula: ##STR40## wherein R 1 represents straight-chained or branched alkyl, optionally subtituted aryl or --NR 5 R 6 R 2 , R 5 represent H or alkyl with 1 to 3 carbon atoms. R 3 , R 6 represent alkyl with 1 to 18 carbon atoms or optionally substituted aryl. R 4 represents alkyl with 5 to 12 carbon atoms, and Fu represents an optionally substituted furyl group.
Claim 2
Dependent Claim
119 words
A colour photographic recording material having at least one light-sensitive silver halide emulsion layer and, associated with this layer, a DIR coupler which carries, in the coupling position, a yellow coupler attached to a 1,2,4-triazolyl group which can be split off, characterised in that the DIR coupler corresponds to the following formula: ##STR40## wherein R 1 represents straight-chained or branched alkyl, optionally subtituted aryl or --NR 5 R 6 R 2 , R 5 represent H or alkyl with 1 to 3 carbon atoms. R 3 , R 6 represent alkyl with 1 to 18 carbon atoms or optionally substituted aryl. R 4 represents alkyl with 5 to 12 carbon atoms, and Fu represents an optionally substituted furyl group.
Claim 3
Dependent Claim
45 words
A recording material according to claim 1, characterised in that the DIR coupler is contained in a predominantly blue-sensitive silver halide emulsion layer and in that the recording material contains at least one other silver halide emulsion layer, which is predominantly green-sensitive or predominantly red-sensitive.
Claim 4
Dependent Claim
153 words
A colour photographic recording material having at least one predominantly blue-sensitive silver halide emulsion layer unit with which at least one yellow coupler is associated, a predominantly green-sensitive silver halide emulsion layer unit with which at least one magenta coupler is associated, and a predominantly red-sensitive silver halide emulsion layer unit with which at least one cyan coupler is associated, characterised in that at least one partial layer of the predominantly blue-sensitive silver halide emulsion layer unit contains a compound corresponding to the following formula: ##STR41## wherein R 1 represents straight-chained or branched alkyl, optionally substituted aryl, or --NR 5 R 6 , R 2 , R 5 represent H or alkyl with 1 to 3 carbon atoms, R 3 , R 6 represent alkyl with 1 to 18 carbon atoms, or optionally substituted aryl, R 4 represents alkyl with 5 to 12 carbon atoms, and Fu represents an optionally substituted furyl group.
Claim 5
Dependent Claim
153 words
A colour photographic recording material having at least one predominantly blue-sensitive silver halide emulsion layer unit with which at least one yellow coupler is associated, a predominantly green-sensitive silver halide emulsion layer unit with which at least one magenta coupler is associated, and a predominantly red-sensitive silver halide emulsion layer unit with which at least one cyan coupler is associated, characterised in that at least one partial layer of the predominantly blue-sensitive silver halide emulsion layer unit contains a compound corresponding to the following formula: ##STR41## wherein R 1 represents straight-chained or branched alkyl, optionally substituted aryl, or --NR 5 R 6 , R 2 , R 5 represent H or alkyl with 1 to 3 carbon atoms, R 3 , R 6 represent alkyl with 1 to 18 carbon atoms, or optionally substituted aryl, R 4 represents alkyl with 5 to 12 carbon atoms, and Fu represents an optionally substituted furyl group.
References Cited (Backward Citations)
US4182630A
Cited
US4359521A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-03-31 | 1989-09-30 | 1990-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-31 | 1993-09-30 | 1994-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-31 | 1997-09-30 | 1998-04-01 | $7700.00 | Window Closed / Lapsed |