PHOTOGRAPHIC ELEMENT CONTAINING SUBSTITUTED 1-PHENYL-3-PYRAZOLIDINONE ELECTRON TRANSFER AGENT

A photographic element is provided which contains a substituted 1-phenyl-3-pyrazolidinone electron transfer agent. Such electron transfer agent has the following formula: wherein: R is hydrogen or a hydrolyzable moiety; R1 is hydrogen or a hydroxy group; R2, R3 and R4 each represent hydrogen, hydrox...

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Bibliographische Detailangaben
Hauptverfasser:	FARLEY, WILLIAM CHARLES, ERICKSON, WAYNE FRANCIS, MCCREARY, MICHAEL DALE
Format:	Patent
Sprache:	eng
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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Beschreibung
Zusammenfassung:	A photographic element is provided which contains a substituted 1-phenyl-3-pyrazolidinone electron transfer agent. Such electron transfer agent has the following formula: wherein: R is hydrogen or a hydrolyzable moiety; R1 is hydrogen or a hydroxy group; R2, R3 and R4 each represent hydrogen, hydroxy, an alkyl group of 1 to 3 carbon atoms, an alkoxy group of 1 to 3 carbon atoms, a phenyl group, -NHSO2R5 -O(CH2)nOR6, -(CH2)nOR6, -O(CH2)nC6H5, -(CH2)nR7, or O(CH2)nR7; R5 is hydrogen or an alkyl group of 1 to 3 carbon atoms; R6 is hydrogen or a methyl group; R7 is NHSO2R5 or SO2NHR3; and n is a positive integer of 1 to 2; with the proviso that at least one of R2 R3 and R4 is a substituent other than hydrogen.