Patent US3966475A successfully refreshed from Google Patents.
US3966475A
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Photographic silver halide emulsions containing acylacetanilide color couplers
Assignee: Agfa Gevaert NV
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Filing: 1974-03-18
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Granted: 1976-06-29
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Expires: 1994-03-18
Abstract
Abstract Novel yellow forming color couplers for use in silver halide color photography are described which correspond to the formula:
Inventors
- 👤 Raphael Karel Van Poucke
- 👤 Freddy Carolus Baeyens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:18
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/32; G03C7/36; G03C7/362
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
101 words
Method of producing a yellow colored photographic image in a photographic light-sensitive silver halide material comprising exposing a photographic light-sensitive silver halide material and developing it with an aromatic primary amino color developing agent in the presence of a benzoylacetanilide color coupler having the formula: ##SPC3## wherein R 1 represents an alkoxy group, R 2 represents alkoxy, X represents hydrogen, halogen, a --S--R' group wherein R' is an alkyl group, an aryl group or a heterocyclic group, a --O--R" group wherein R" represents an alkyl group or an aryl group, or an acyl group, and Y represents a carbocyclic aryl group.
Claim 2
Dependent Claim
101 words
Method of producing a yellow colored photographic image in a photographic light-sensitive silver halide material comprising exposing a photographic light-sensitive silver halide material and developing it with an aromatic primary amino color developing agent in the presence of a benzoylacetanilide color coupler having the formula: ##SPC3## wherein R 1 represents an alkoxy group, R 2 represents alkoxy, X represents hydrogen, halogen, a --S--R' group wherein R' is an alkyl group, an aryl group or a heterocyclic group, a --O--R" group wherein R" represents an alkyl group or an aryl group, or an acyl group, and Y represents a carbocyclic aryl group.
Claim 3
Dependent Claim
21 words
The method of claim 1 wherein R 1 and R 2 are in the ortho-position with respect to the acetanilide moiety.
Claim 4
Dependent Claim
36 words
Method according to claim 2 wherein in the formula of the acylacetanilide compound Y represents a phenyl group or a phenyl group substituted with one or more alkyl, cycloalkyl, hydroxy, halogen, alkoxy, alkylthio or alkylsulphonyl groups.
Claim 5
Dependent Claim
75 words
A photographic element comprising at least one silver halide emulsion layer and a benzoylacetanilide color coupler corresponding to the formula: ##SPC4## wherein R 1 represents an alkoxy group, R 2 represents alkoxy, X represents hydrogen, halogen, a --S--R' group wherein R'is an alkyl group, an aryl group or a heterocyclic group, a --O--R" group wherein R" represents an alkyl group or an aryl group, or an acyl group, and Y represents a carbocyclic aryl group.
Claim 6
Dependent Claim
75 words
A photographic element comprising at least one silver halide emulsion layer and a benzoylacetanilide color coupler corresponding to the formula: ##SPC4## wherein R 1 represents an alkoxy group, R 2 represents alkoxy, X represents hydrogen, halogen, a --S--R' group wherein R'is an alkyl group, an aryl group or a heterocyclic group, a --O--R" group wherein R" represents an alkyl group or an aryl group, or an acyl group, and Y represents a carbocyclic aryl group.
Claim 7
Dependent Claim
22 words
The photographic element of claim 4 wherein R 1 and R 2 are in the ortho-position with respect to the acetanilide moiety.
Claim 8
Dependent Claim
39 words
A photographic element according to claim 5 wherein, in the formula of the colour coupler Y represents a phenyl group or a phenyl group substituted with one or more alkyl, cycloalkyl, hydroxy, halogen, alkoxy, alkylthio or alkyl sulphonyl groups.
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) | 1979-06-29 | 1979-12-29 | 1980-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-29 | 1983-12-29 | 1984-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-29 | 1987-12-29 | 1988-06-29 | $7700.00 | Window Closed / Lapsed |