Patent EP0329491A2 successfully refreshed from Google Patents.
EP0329491A2
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Photographic elements incorporating antihalation and/or acutance dyes
Assignee: 3M Co
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Filing: 1989-02-20
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Granted: —
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Expires: 2009-02-20
Abstract
Abstract Bleachable dyes for use in photographic and photothermographic silver halide emulsions of the general formula: in which: m+p=2, n is 0 or 1, s is 0 or 1, Z¹ and Z² independently represent the non-metallic atoms necessary to complete a heterocyclic nucleus of the type present in cyanine dyes and in addition contain a water solubilizing group such as sulphonate, carboxylate, etc., R¹ and R² independently represent alkyl or substituted alkyl, alkenyl, substituted alkenyl or aralkyl, each group containing not more than 20 carbon atoms. R³ and R⁴ independently represent a hydrogen atom or an alkyl, substituted alkyl, alkenyl or substituted alkenyl each of which groups contain not more than 10 carbon atoms. R⁵, R⁶, R⁷ and R⁸, which together may not contain more than 12 carbon atoms, independently represent a hydrogen atom, an alkyl, substituted alkyl, alkenyl, substituted alkenyl, aryl or alkaryl group, or one of R⁵ and R⁶ together with one of R⁷ and R⁸ represent the necessary atoms to complete a carbocyclic ring in which case the others of R⁵ to R⁸ are absent, Q¹ and Q² together represent the non-metallic atoms necessary to complete an acidic nucleus of the type present in oxonol or merocyanine dyes.
Inventors
- 👤 Richard J. C/O Minnesota Mining And Loer
- 👤 James B.Jr. C/O Minnesota Mining And Philip
- 👤 John R. C/O Minnesota Mining And Boon
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 12:46
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/825; G03C1/83; G03C1/832; G03C1/494; G03C1/498; G03C1/49836; G03C1/49845; G03C1/49854
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
265 words
A photographic element comprising one or more silver halide photosensitive layers on a substrate, characterized in that the element includes in at least one layer free of silver halide as an antihalation dye, an antihalation effective amount of at least one compound that will provide a transmissive optical density of greater than 0.1 at the λmax of the compound, said compound having the formula: in which: m+p=2, n is 0 or 1, s is 0 or 1, Z¹ and Z² independently represent the non-metallic atoms necessary to complete a heterocyclic nucleus of the type present in cyanine dyes and in addition contain a water solubilizing group such as sulphonate, carboxylate, etc., R¹ and R² independently selected from the group consisting of alkyl or substituted alkyl, alkenyl, substituted alkenyl or aralkyl, each group containing not more than 20 carbon atoms, R³ and R⁴ independently selected from the group consisting of a hydrogen atom or an alkyl, substituted alkyl, alkenyl or substituted alkenyl each of which groups contain not more than 10 carbon atoms, R⁵, R⁶, R⁷ and R⁸, which together may not contain more than 12 carbon atoms, are independently selected from the group consisting of a hydrogen atom, an alkyl, substituted alkyl, alkenyl, substituted alkenyl, aryl or alkaryl group, or one of R⁵ and R⁶ together with one of R⁷ and R⁸ represent the necessary atoms to complete a carbocyclic ring in which case the others of R⁵ to R⁸ are absent, Q¹ and Q² together represent the non-metallic atoms necessary to complete an acidic nucleus of the type present in oxonol or merocyanine dyes.
Claim 2
Dependent Claim
265 words
A photographic element comprising one or more silver halide photosensitive layers on a substrate, characterized in that the element includes in at least one layer free of silver halide as an antihalation dye, an antihalation effective amount of at least one compound that will provide a transmissive optical density of greater than 0.1 at the λmax of the compound, said compound having the formula: in which: m+p=2, n is 0 or 1, s is 0 or 1, Z¹ and Z² independently represent the non-metallic atoms necessary to complete a heterocyclic nucleus of the type present in cyanine dyes and in addition contain a water solubilizing group such as sulphonate, carboxylate, etc., R¹ and R² independently selected from the group consisting of alkyl or substituted alkyl, alkenyl, substituted alkenyl or aralkyl, each group containing not more than 20 carbon atoms, R³ and R⁴ independently selected from the group consisting of a hydrogen atom or an alkyl, substituted alkyl, alkenyl or substituted alkenyl each of which groups contain not more than 10 carbon atoms, R⁵, R⁶, R⁷ and R⁸, which together may not contain more than 12 carbon atoms, are independently selected from the group consisting of a hydrogen atom, an alkyl, substituted alkyl, alkenyl, substituted alkenyl, aryl or alkaryl group, or one of R⁵ and R⁶ together with one of R⁷ and R⁸ represent the necessary atoms to complete a carbocyclic ring in which case the others of R⁵ to R⁸ are absent, Q¹ and Q² together represent the non-metallic atoms necessary to complete an acidic nucleus of the type present in oxonol or merocyanine dyes.
Claim 3
Dependent Claim
26 words
A photographic element as claimed in claim 1, characterized in that Z¹ and Z² complete a 5 or 6 membered heterocyclic nucleus which may possess substituents.
Claim 4
Dependent Claim
51 words
A photographic element as claimed in claim 2, characterized in that Z¹ and/or Z² complete a heterocyclic nucleus selected from the group consisting of thiazole, benzothiazole, naphthothiazole, thianaphtheno-7′6′4,5-thiazole, oxazole, benzoxazole, naphthoxazole, selenazole, benzoselenazole, naphthoselenazole, thiazoline, 2-quinoline, 4-quinoline, 1-isoquinoline, 3-isoquinoline, benzimidazole, 3,3-dialkylindolenine, 2-pyridine, and 4-pyridine, each of which nuclei may be substituted.
Claim 5
Dependent Claim
27 words
A photographic element as claimed in claim 1, characterized in that Z¹ and/or Z² complete a benzothiazole or a 3,3-dialkylindolenine nucleus containing 3,3-dialkylindolenine a water solubilizing group.
Claim 6
Dependent Claim
60 words
A photographic element as claimed in claim 1, characterized in that Q¹ and Q² complete a moiety which is a derivative of one of the nuclei which may optionally possess substituents selected from the group consisting of indandione, pyrazolone, isoxazolone, oxindole, 2,4,6-trioxohexahydropyrimidine, 2-thio-4,6-dioxohexahydropyrimidine, 3,5-pyrazolidinedione, 2(3H)-imidazo[1,2-a]pyridone, 5,7-dioxo-6,7-dihydro-5-thiazolo[3,2-a]pyrimidine, 2-thio-2,4-oxazolidinedione, thianaphthenone dioxide, 2-thio-2,4-thiazolidindione, 4-thiazolinone, 2-imino-2,4-oxazolinone, 2,4-imidazolinedione, 2-thio-2,4-imindazolinedione cyclic groups, 5,5-dialkyl-1,3-cyclohexanedione or isopropylidine malonate.
Claim 7
Dependent Claim
27 words
A photographic element as claimed in claim 5, characterized in that the moiety completed by Q¹ and Q² contains at least one aliphatic or predominantly aliphatic group.
Claim 8
Dependent Claim
69 words
A photographic element as claimed in claim 6, characterized in that Q¹ and Q² complete a moiety of the general formula: in which R⁹ and R¹⁰ are independently selected from the group consisting of a hydrogen atom, an alkyl group which may be substituted, alkenyl, substituted alkenyl, an aryl group which may be substituted or an aralkyl group, each of which groups contain not more than 25 carbon atoms.
Claim 9
Dependent Claim
21 words
A photographic element as claimed in claim 5, characterized in that the photographic element is a conventional wet processed photographic element.
Claim 10
Dependent Claim
24 words
A photographic element as claimed in claim 5, characterized in that the photographic element is a photothermographic element comprising a silver halide photothermographic element.
Claim 11
Dependent Claim
50 words
A photographic element as claimed in claim 5, characterized in that the dye of formula (I) is present in an antihalation backing on said substrate, as an underlayer between said substrate and said one or more photosensitive layers, in an overcoat above the photosensitive layer, or in the photosensitive layer.
References Cited (Backward Citations)
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