US4396707A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic material, process for the production thereof, process for the production of photographic images and new triazoles
Assignee: Agfa Gevaert AG
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Filing: 1981-08-24
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Granted: 1983-08-02
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Expires: 2001-08-24
Abstract
Abstract New triazoles of the formula ##STR1## are suitable stabilizing agents in photographic materials.
Inventors
- 👤 Anita VON Konig
- 👤 Werner Liebe
- 👤 Wilhelm Saleck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:14
CPC Classifications
C; C07; C07D; C07D249/00; C07D249/02; C07D249/08; C07D249/10; C07D249/12; G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/34
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
108 words
Light-sensitive photographic material containing at least one light-sensitive silver halide emulsion layer and optionally other layers, wherein the improvement comprises at least one layer contains a stabilizer compound corresponding to general formula (I): ##STR25## in which R 1 denotes an optionally substituted alkyl, cycloalkyl, aryl or aralkyl group or a substituted triazole group linked via an --S-- atom R 2 denotes H, acyl, alkyl or --COOR 5 R 3 denotes H, acyl or --COOR 5 R 4 denotes H or alkyl R 5 denotes alkyl, cycloalkyl, aryl, aralkyl n and m, which are the same or different, denote 0 or 1 and B denotes a divalent linking member
Claim 2
Dependent Claim
108 words
Light-sensitive photographic material containing at least one light-sensitive silver halide emulsion layer and optionally other layers, wherein the improvement comprises at least one layer contains a stabilizer compound corresponding to general formula (I): ##STR25## in which R 1 denotes an optionally substituted alkyl, cycloalkyl, aryl or aralkyl group or a substituted triazole group linked via an --S-- atom R 2 denotes H, acyl, alkyl or --COOR 5 R 3 denotes H, acyl or --COOR 5 R 4 denotes H or alkyl R 5 denotes alkyl, cycloalkyl, aryl, aralkyl n and m, which are the same or different, denote 0 or 1 and B denotes a divalent linking member
Claim 3
Dependent Claim
129 words
Material according to claim 1, wherein R 1 is an alkyl group with 1-6 C atoms or a cycloalkyl group with 5 or 6 C atoms or a phenyl group or a benzyl group or a group of the formula ##STR26## in which R 2 -R 4 have the meaning indicated in claim 1 and wherein R 2 is H, acetyl, alkyl with 1-4 C atoms or COOR 5 R 3 is H or an acyl group R 4 denotes H or an alkyl group with 1-4 C atoms R 5 denotes alkyl with 1-6 C atoms or cycloalkyl with 5 or 6 C atoms, or phenyl or benzyl B is --O-- or an organic group which can carry an oxygen atom either at one or at two positions.
Claim 4
Dependent Claim
78 words
Material according to claim 1, wherein R 1 represents methyl, ethyl, isopropyl, butyl, phenyl, benzyl or a cycloalkyl group R 2 represents acetyl or COOR 5 R 3 represents H or acetyl R 4 represents H, methyl or ethyl R 5 represents ethyl, butyl or cyclohexyl B represents --O-- or an alkylene group, an arylene group, a cycloalkylene group or an aralkylene group which organic groups can carry an oxygen atom either at one or at two positions.
Claim 5
Dependent Claim
26 words
Material according to claim 1 wherein B denotes --O-- --O--[CH 2 ] p --O-- in which p=1-4 --[CH 2 ] p -- in which p=1-4 ##STR27##
Claim 6
Dependent Claim
29 words
Material according to claim 1, wherein a compound corresponding to general formula (I) is contained in a quantity of from 5 to 500 mg per mol of silver halide.
Claim 7
Dependent Claim
18 words
Material according to claim 1, characterised in that it contains at least one of the following compounds: ##STR28##
Claim 8
Dependent Claim
19 words
Process for the production of photographic images by imagewise exposure and development of the material according to claim 1.
Claim 9
Dependent Claim
80 words
In a process for stabilizing a light sensitive photographic material containing silver halide emulsion including the preparation of the material for casting a supported layer comprising the steps of precipitating the silver halide in the presence of a protective colloid and chemical ripening the emulsion to form a casting solution the improvement which comprises after precipitation of the silver halide and before chemical ripening, adding to the casting solution a stabilizing amount of a compound of the following formula: ##STR29##
Claim 10
Dependent Claim
80 words
In a process for stabilizing a light sensitive photographic material containing silver halide emulsion including the preparation of the material for casting a supported layer comprising the steps of precipitating the silver halide in the presence of a protective colloid and chemical ripening the emulsion to form a casting solution the improvement which comprises after precipitation of the silver halide and before chemical ripening, adding to the casting solution a stabilizing amount of a compound of the following formula: ##STR29##
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) | 1986-08-01 | 1987-01-31 | 1987-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-01 | 1991-01-31 | 1991-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-01 | 1995-01-31 | 1995-08-02 | $7700.00 | Window Closed / Lapsed |