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US 4,396,707 AGranted
Photographic material, process for the production thereof, process for the production of photographic images and new triazoles
AssigneeAgfa-Gevaert
InventorsAnita von Konig, Werner Liebe, Wilhelm Saleck
Life of this patent
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Abstract
New triazoles of the formula ##STR1## are suitable stabilizing agents in photographic materials.
Claims8
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.sup.1 denotes an optionally substituted alkyl, cycloalkyl, aryl or aralkyl group or a substituted triazole group linked via an --S-- atom
- R.sup.2 denotes H, acyl, alkyl or --COOR.sup.5
- R.sup.3 denotes H, acyl or --COOR.sup.5
- R.sup.4 denotes H or alkyl
- R.sup.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
3 more elements
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##
Dependencies are inferred from the claim text.