US5422237A
Expired / Lapsed
US
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Methine compound and silver halide photographic material comprising the same
Assignee: Fujifilm Holdings Corp
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Filing: 1994-05-10
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Granted: 1995-06-06
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Expires: 2014-05-10
Abstract
Abstract A methine compound having a benzoxazole nucleus substituted by a meta-substituted aryl group and the methine compound represented by the following formula ##STR1## wherein R 1 and R 2 are the same or different and each represents a substituted or unsubstituted alkyl group; Z 1 represents an atomic group necessary for forming a five-membered or six-membered nitrogen-containing heterocyclic ring; R 3 represents a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted aryl group, a substituted or unsubstituted aryloxy group, a halogen atom, a substituted or unsubstituted alkylthio group, or a substituted or unsubstituted heterocyclic group; L 1 , L 2 and L 3 are the same or different and each represents a substituted or unsubstituted methine group; n represents 0, 1, 2 or 3; M 1 represents an ion for neutralizing charge; and m 1 represents a number of 0 or more necessary for neutralizing the molecular charge.
Inventors
- 👤 Takashi Kato
- 👤 Kiyohito Takada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:31
CPC Classifications
C; C09; C09B; C09B23/00; C09B23/02; G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/08; G03C1/10; G03C1/12; G03C1/14; G03C1/035; G03C1/16; G03C1/18; G03C1/22; G03C1/26; G03C2001/03517; G03C2001/03535; G03C2001/03564
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
141 words
A silver halide photographic material comprising a support having thereon at least one light-sensitive silver halide emulsion layer, which comprises a methine compound represented by the following formula (I): ##STR96## wherein R 1 and R 2 are the same or different and each represents an alkyl group; Z 1 represents an atomic group necessary for forming a five-membered or six-membered nitrogen-containing heterocyclic ring; R 3 represents a substituted or unsubstituted alkyl group, an alkoxy group, an aryl group, an aryloxy group, a halogen atom, an alkylthio group, or a heterocyclic group; L 1 , L 2 and L 3 are the same or different and each represents a methine group; n represents 0, 1, 2 or 3; M 1 represents an ion for neutralizing charge; and m 1 represents a number of 0 or more necessary for neutralizing the molecular charge.
Claim 2
Dependent Claim
141 words
A silver halide photographic material comprising a support having thereon at least one light-sensitive silver halide emulsion layer, which comprises a methine compound represented by the following formula (I): ##STR96## wherein R 1 and R 2 are the same or different and each represents an alkyl group; Z 1 represents an atomic group necessary for forming a five-membered or six-membered nitrogen-containing heterocyclic ring; R 3 represents a substituted or unsubstituted alkyl group, an alkoxy group, an aryl group, an aryloxy group, a halogen atom, an alkylthio group, or a heterocyclic group; L 1 , L 2 and L 3 are the same or different and each represents a methine group; n represents 0, 1, 2 or 3; M 1 represents an ion for neutralizing charge; and m 1 represents a number of 0 or more necessary for neutralizing the molecular charge.
Claim 3
Dependent Claim
77 words
A silver halide photographic material, wherein (a) the silver halide photographic material comprises a support having thereon at least one silver halide emulsion layer having a silver chloride content of 90 mol % or more, and (b) a silver halide emulsion contained in at least one layer of the silver halide emulsion layers having a silver chloride content of 90 mol % or more comprises at least one of the methine compounds as claimed in claim 1.
Claim 4
Dependent Claim
35 words
The silver halide photographic material as claimed in claim 1, wherein the compound represented by formula (I) is used in an amount of from 3×10 -6 to 2.5×10 -3 mol per mol of silver halide.
Claim 5
Dependent Claim
12 words
The photographic material as claimed in claim 1, wherein n is 1.
Claim 6
Dependent Claim
30 words
The photographic material as claimed in claim 1, wherein R 3 is selected from the group consisting of an unsubstituted alkyl group, an unsubstituted alkoxy group and a halogen atom.
Claim 7
Dependent Claim
30 words
The photographic material as claimed in claim 1, wherein R 1 and R 2 are each selected from the group consisting of an unsubstituted alkyl group and a sulfoalkyl group.
Claim 8
Dependent Claim
38 words
The photographic material as claimed in claim 1, wherein L 1 , L 2 and L 3 are each selected from the group consisting of an unsubstituted methine group and a methine group substituted by an alkyl group.
Claim 9
Dependent Claim
68 words
The photographic material as claimed in claim 1, wherein a nucleus formed by Z 1 is selected from the group consisting of a thiazole nucleus, a thiazoline nucleus, an oxazole nucleus, an oxazoline nucleus, a selenazole nucleus, a selenazoline nucleus, a quinoline nucleus, a tellurazole nucleus, an imidazole nucleus, a pyridine nucleus, an imidazoquinoxaline nucleus, an oxadiazole nucleus, a thiadiazole nucleus, a tetrazole nucleus and a pyrimidine nucleus.
Claim 10
Dependent Claim
19 words
The photographic material as claimed in claim 1, wherein R 1 and R 2 are each a sulfoalkyl group.
References Cited (Backward Citations)
GB675654A
Cited
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