AZO DYESTUFFS, METHODS FOR THEIR PREPARATION AND THEIR USE AS COLOURING AGENTS IN PHOTOGRAPHIC MATERIALS IN THE SILVER DYESTUFF BLEACHING PROCESS, AND THE SAID PHOTOGRAPHIC MATERIALS CONTAINING THESE AZO DYESTUFFS

Photographic materials which comprise, on a base, at least one layer containing an azo dyestuff of the formula in which R1 is hydrogen, an alkylsulfone, halogen, cyano or nitro, R2 is hydrogen, halogen, cyano or nitro, R3 is hydrogen, alkyl, halogen, cyano or nitro, B1 is an aromatic ring system, K1...

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Bibliographische Detailangaben
1. Verfasser:	LENOIR, JOHN
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	ADHESIVES AUXILIARY PROCESSES IN PHOTOGRAPHY CHEMISTRY CINEMATOGRAPHY DYES ELECTROGRAPHY HOLOGRAPHY LAKES METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS MORDANTS NATURAL RESINS ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES PAINTS PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR,STEREO-PHOTOGRAPHIC PROCESSES PHOTOGRAPHY PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES PHYSICS POLISHES
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Beschreibung
Zusammenfassung:	Photographic materials which comprise, on a base, at least one layer containing an azo dyestuff of the formula in which R1 is hydrogen, an alkylsulfone, halogen, cyano or nitro, R2 is hydrogen, halogen, cyano or nitro, R3 is hydrogen, alkyl, halogen, cyano or nitro, B1 is an aromatic ring system, K1 is an aromatic amine and m1 is 1 or 2.