High contrast photographic element including an aryl sulfonamidophenyl hydrazide containing both thio and ethyleneoxy groups

High contrast photographic element including an aryl sulfonamidophenyl hydrazide containing both thio and ethyleneoxy groups

Silver halide photographic elements which are capable of high contrast development having incorporated therein, as a nucleating agent, an aryl sulfonamidophenyl hydrazide of the formula: where R is a monovalent group comprised of at least three repeating ethyleneoxy units, m is 1 to 6, Y is a divale...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: MACHONKIN, HAROLD IHOR, KERR, DONALD LAURENS
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
AUXILIARY PROCESSES IN PHOTOGRAPHY
CINEMATOGRAPHY
ELECTROGRAPHY
HOLOGRAPHY
PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR,STEREO-PHOTOGRAPHIC PROCESSES
PHOTOGRAPHY
PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES
PHYSICS
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Beschreibung
Zusammenfassung:Silver halide photographic elements which are capable of high contrast development having incorporated therein, as a nucleating agent, an aryl sulfonamidophenyl hydrazide of the formula: where R is a monovalent group comprised of at least three repeating ethyleneoxy units, m is 1 to 6, Y is a divalent aromatic radical, and R is hydrogen or a blocking group.