Photographic material containing 3-anilino-5-pyrazolylalkylcarbonate or arylcarbonate couplers
AssigneeAgfa-Gevaert
InventorsMarcel Jacob Monbaliu, Raphael Karel Van Poucke, Roger Henri Vrydaghs, Hans-Heinrich Credner, Ernst Meier
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Abstract
3-Anilino-5-pyrazolyl alkylcarbonates and arylcarbonates are described for use in silver halide color photography as color coupler precursor compounds containing no active methylene group so that they do not take part in undesirable side-reactions before color development.
Claims5
Light-sensitive material comprising at least one silver halide emulsion layer and a 3-anilino-5-pyrazolyl carbonate according to the following general formula:
- ##STR2## in which:
- Z represents an alkyl or aryl group.
- Y represents an anilino group,
- R.sup.1 represents an alkyl group having 1-22 carbon atoms, or an aryl group,
- R.sup.2 represents hydrogen, an alkyl group, halogen, sulpho, alkoxy, aryloxy, acyloxy, alkylthio, arylthio, a heterocyclic thio group, an arylazo group, or a benzotriazolyl group.
Process for the production of photographic colour images, by colour development of a photographic material with an aromatic, primary amino developing agent in the presence of a 3-anilino-5-pyrazolyl alkyl carbonate or aryl carbonate.
Dependencies are inferred from the claim text.