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US4923788A
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Filter dyes for photographic elements
Assignee: Eastman Kodak Co
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Filing: 1989-02-09
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Granted: 1990-05-08
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Expires: 2009-02-09
Abstract
Abstract Photographic elements comprising filter dyes of the formula: ##STR1## R, R', L, L', L", X, and n are as defined herein are disclosed.
Inventors
- 👤 Leslie Shuttleworth
- 👤 Paul B. Merkel
- 👤 Glenn M. Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:38
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/825; G03C1/83; G03C1/832
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
97 words
A photographic element comprising a support having thereon a radiation sensitive silver halide emulsion layer and a layer, which is the same as or different from said silver halide layer, comprising a hydrophilic vehicle and a filter dye of the formula: ##STR13## wherein R is substituted or unsubstituted alkyl or aryl, X is an electron withdrawing group, R' is substituted or unsubstituted aryl or a substituted or unsubstituted aromatic heterocyclic nucleus, L, L', and L" are each independently a substituted or unsubstituted methine group, and n is 0 or a positive integer of from 1 to 6.
Claim 2
Dependent Claim
97 words
A photographic element comprising a support having thereon a radiation sensitive silver halide emulsion layer and a layer, which is the same as or different from said silver halide layer, comprising a hydrophilic vehicle and a filter dye of the formula: ##STR13## wherein R is substituted or unsubstituted alkyl or aryl, X is an electron withdrawing group, R' is substituted or unsubstituted aryl or a substituted or unsubstituted aromatic heterocyclic nucleus, L, L', and L" are each independently a substituted or unsubstituted methine group, and n is 0 or a positive integer of from 1 to 6.
Claim 3
Dependent Claim
34 words
A photographic element according to claim 1 wherein X is selected from the group consisting of cyano, substituted or unsubstituted carboxylate, substituted or unsubstituted aryl, and --CO--R" wherein R" is substituted or unsubstituted amino.
Claim 4
Dependent Claim
23 words
A photographic element according to claim 1 wherein R' is selected from the group consisting of phenyl, furan, thiophene, pyridine, pyrrole, and imidazole.
Claim 5
Dependent Claim
19 words
A photographic element according to claim 1 wherein R or R' comprises a substituent that is a solubilizing group.
Claim 6
Dependent Claim
15 words
A Photographic element according to claim 4 wherein said solubilizing group comprises an ionizable proton.
Claim 7
Dependent Claim
19 words
A photographic element according to claim 5 wherein the dye is in the form of a solid particle dispersion.
Claim 8
Dependent Claim
11 words
A photographic element according to claim 1 wherein n is 0.
Claim 9
Dependent Claim
30 words
A photographic element according to claim 7 wherein R' is or is substituted with an electron donor selected from the group consisting of substituted or unsubstituted: furan, thiophene, and pyrrole.
Claim 10
Dependent Claim
20 words
A photographic element according to claim 8 wherein R' is or is substituted with a substituted or unsubstituted furan nucleus.
Claim 11
Dependent Claim
11 words
A photographic element according to claim 7 wherein X is cyano.
Claim 12
Dependent Claim
11 words
A photographic element according to claim 8 wherein X is cyano.
Claim 13
Dependent Claim
11 words
A photographic element according to claim 9 wherein X is cyano.
Claim 14
Dependent Claim
21 words
A photographic element according to any of claims 7-12 wherein R or R' comprises a substituent that is a solubilizing group.
Claim 15
Dependent Claim
15 words
A photographic element according to claim 13 wherein said solubilizing group comprises an ionizable proton.
Claim 16
Dependent Claim
19 words
A photographic element according to claim 14 wherein the dye is in the form of a solid particle dispersion.
Claim 17
Dependent Claim
14 words
A photographic element according to claim 1 wherein the dye has the formula: ##STR14##
Claim 18
Dependent Claim
19 words
A photographic element according to claim 16 wherein the dye is in the form of a solid particle dispersion.
Claim 19
Dependent Claim
47 words
A photographic element according to any of claims 7-12 or 16-17 wherein the element comprises a support having thereon, in order, at least one red-sensitive silver halide layer, at least one green-sensitive silver halide layer, said filter dye layer, and at least one blue-sensitive silver halide layer.
References Cited (Backward Citations)
US3661899A
Cited
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1993-05-07 | 1993-11-06 | 1994-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-05-07 | 1997-11-06 | 1998-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-05-07 | 2001-11-06 | 2002-05-08 | $7700.00 | Window Closed / Lapsed |