Photographic material and process comprising a pyrazolotriazole coupler

Pyrazolotriazole couplers having a ballast-containing group of the formula (I) attached to the pyrazolotriazole ring group wherein: R, R , R and R represent hydrogen or a substituent; L is a divalent linking group connecting the ballast containing group to the pyrazolotriazole ring; L' is a lin...

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Hauptverfasser:	TANG, PING WAH, KRISHNAMARTHY, SUNDARAM, COWAN, STANLEY W
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AUXILIARY PROCESSES IN PHOTOGRAPHY CHEMISTRY CINEMATOGRAPHY ELECTROGRAPHY HETEROCYCLIC COMPOUNDS HOLOGRAPHY METALLURGY ORGANIC CHEMISTRY PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR,STEREO-PHOTOGRAPHIC PROCESSES PHOTOGRAPHY PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES PHYSICS
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creator	TANG, PING WAH KRISHNAMARTHY, SUNDARAM COWAN, STANLEY W
description	Pyrazolotriazole couplers having a ballast-containing group of the formula (I) attached to the pyrazolotriazole ring group wherein: R, R , R and R represent hydrogen or a substituent; L is a divalent linking group connecting the ballast containing group to the pyrazolotriazole ring; L' is a linking group connecting the -BD group to the phenylene ring; n is 0 or 1; B represents -N(R)-SO2-, wherein R represents hydrogen or a substituent; and D represents substituted or unsubstituted alkyl are useful in silver halide photographic materials and processes. The couplers exhibit increased coupling efficiency, and provide formation of dyes having improved maximum magenta image dye density when employed in color photographic materials and processes.
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language	eng ; fre ; ger
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subjects	AUXILIARY PROCESSES IN PHOTOGRAPHY CHEMISTRY CINEMATOGRAPHY ELECTROGRAPHY HETEROCYCLIC COMPOUNDS HOLOGRAPHY METALLURGY ORGANIC CHEMISTRY PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR,STEREO-PHOTOGRAPHIC PROCESSES PHOTOGRAPHY PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES PHYSICS
title	Photographic material and process comprising a pyrazolotriazole coupler
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