Photographic material comprising a silver halide emulsion containing an anti-bronzing agent

N-Phenyl-N1-21-mercapto-ethylurea and N-(1-naphthyl) - N1 - 2 - mercapto - ethylurea are prepared by reacting b -mercaptoethylamine with phenyl or a -naphthyl isocyanate in anhydrous benzene. N - 2 - Naphthyl - 21 - mercapto ethyl carbamate is prepared by reacting b -naphthylisocyanate with b -merca...

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Bibliographische Detailangaben
Hauptverfasser:	WILLEMS JOZEF FRANS, SEVENS GERARD MICHIEL, PATTIJN HENDRIK ADOLF
Format:	Patent
Sprache:	eng
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS AUXILIARY PROCESSES IN PHOTOGRAPHY CHEMISTRY CINEMATOGRAPHY ELECTROGRAPHY 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:	N-Phenyl-N1-21-mercapto-ethylurea and N-(1-naphthyl) - N1 - 2 - mercapto - ethylurea are prepared by reacting b -mercaptoethylamine with phenyl or a -naphthyl isocyanate in anhydrous benzene. N - 2 - Naphthyl - 21 - mercapto ethyl carbamate is prepared by reacting b -naphthylisocyanate with b -mercaptoethanol in anhydrous benzene.