US4833070A
Expired / Lapsed
US
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Color photographic recording material containing a yellow DIR coupler
Assignee: Agfa Gevaert AG
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Filing: 1987-08-28
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Granted: 1989-05-23
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Expires: 2007-08-28
Abstract
Abstract Remarkably high interimage and Eberhard effects are obtained when yellow DIR couplers corresponding to formuls I are added to multilayered color photographic recording materials, in particular to the green-sensitive or red-sensitive layers. These couplers can improve the sharpness and color reproduction. ##STR1## R 1 denoted alkyl or aryl, R 2 denotes alkyl with up to 18 carbon atoms, R 3 denotes halogen, SO 2 --R 6 , SO 2 --NR 7 --R 8 or NH--SO 2 --R 6 , R 4 denoted H, alkyl or aryl. R 5 denotes alkyl, cycloalkyl, alkinyl, aralkyl or aryl, R 6 denotes alkyl or aryl, R 7 denotes H or alkyl and R 8 denoted H, alkyl, aryl, CO--R 6 or ##STR2## and the total number of carbon atoms in R 4 and R 5 is not greater than 11.
Inventors
- 👤 Friedrich-Wilhelm Kunitz
- 👤 Hans hlschlager
- 👤 Heinrich Odenwalder
- 👤 Dirk Hubner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:07
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/305; G03C7/30511; G03C7/30517; G03C7/30535
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
142 words
Colour photographic recording material containing at least one light-sensitive silver halide emulsion layer and having associated with this layer a DIR coupler carrying a releasable 1,2,4-triazolyl group attached to the coupling position of a yellow coupler, characterised in that the DIR coupler corresponds to the following formula: wherein R 1 denotes alkyl or aryl, R 2 denotes alkyl with up to 18 carbon atoms, R 3 denotes halogen SO 2 --R 6 , SO 2 --NR 7 --R 8 or NH--SO 2 --R 6 , R 4 denotes H, alkyl or aryl, R 5 denotes alkyl, cycloalkyl, alkinyl, aralkyl or aryl, R 6 denotes alkyl or aryl, R 7 denotes H or alkyl and R 8 denotes H, alkyl, aryl, CO--R 6 or ##STR49## and the total number of carbon atoms in R 4 and R 5 is not greater than 11.
Claim 2
Dependent Claim
142 words
Colour photographic recording material containing at least one light-sensitive silver halide emulsion layer and having associated with this layer a DIR coupler carrying a releasable 1,2,4-triazolyl group attached to the coupling position of a yellow coupler, characterised in that the DIR coupler corresponds to the following formula: wherein R 1 denotes alkyl or aryl, R 2 denotes alkyl with up to 18 carbon atoms, R 3 denotes halogen SO 2 --R 6 , SO 2 --NR 7 --R 8 or NH--SO 2 --R 6 , R 4 denotes H, alkyl or aryl, R 5 denotes alkyl, cycloalkyl, alkinyl, aralkyl or aryl, R 6 denotes alkyl or aryl, R 7 denotes H or alkyl and R 8 denotes H, alkyl, aryl, CO--R 6 or ##STR49## and the total number of carbon atoms in R 4 and R 5 is not greater than 11.
Claim 3
Dependent Claim
44 words
Recording material according to claim 1 charcterised in that the DIR coupler is contained in a silver halide emulsion layer which is predominantly blue-sensitive and in that the recording material contains at least one other, predominantly green-sensitive or predominantly red-sensitive silver halide emulsion layer.
Claim 4
Dependent Claim
26 words
Colour photographic recording material according to claims 1 or 2, characterised in that the DIR coupler is contained in a predominantly red-sensitive silver halide emulsion layer.
Claim 5
Dependent Claim
182 words
Colour photographic recording material containing 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 greensensitive silver halide emulsion layer unit or of the predominantly red-sensitive corresponding to the following formula: ##STR50## wherein R 1 denotes alkyl or aryl, R 2 denotes alkyl with up to 18 carbon atoms, R 3 denotes halogen, SO-- 2 --R 6 , SO 2 --NR 7 --R 8 or NH--SO 2 --R 6 , R 4 denotes H, alkyl or aryl, R 5 denotes alkyl, cycloalkyl, alkinyl, aralkyl or aryl, R 6 denotes alkyl or aryl, R 7 denotes H or alkyl and R 8 denotes H, alkyl, aryl, CO--R 6 or ##STR51## and the total number of carbon atoms in R 4 and R 5 is not greater than 11.
Claim 6
Dependent Claim
182 words
Colour photographic recording material containing 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 greensensitive silver halide emulsion layer unit or of the predominantly red-sensitive corresponding to the following formula: ##STR50## wherein R 1 denotes alkyl or aryl, R 2 denotes alkyl with up to 18 carbon atoms, R 3 denotes halogen, SO-- 2 --R 6 , SO 2 --NR 7 --R 8 or NH--SO 2 --R 6 , R 4 denotes H, alkyl or aryl, R 5 denotes alkyl, cycloalkyl, alkinyl, aralkyl or aryl, R 6 denotes alkyl or aryl, R 7 denotes H or alkyl and R 8 denotes H, alkyl, aryl, CO--R 6 or ##STR51## and the total number of carbon atoms in R 4 and R 5 is not greater than 11.
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) | 1992-05-22 | 1992-11-21 | 1993-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-22 | 1996-11-21 | 1997-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-22 | 2000-11-21 | 2001-05-23 | $7700.00 | Window Closed / Lapsed |