LICHTEMPFINDLICHES PHOTOGRAPHISCHES MATERIAL

Development inhibitor releasing compounds are thioether compounds capable of releasing on reaction with color developer oxidation products, a diffusible mercaptan that inhibits further development of silver halide. Useful DIR compounds correspond to the formula R1 represents hydrocarbyl Y represents...

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Bibliographische Detailangaben
Hauptverfasser:	MEIER,ERNST, RANZ,ERWIN,.DR, SCHRANZ,KARL-WILHELM,DR, KUEFFNER,KARL, LAESSIG,WOLFGANG,.DR
Format:	Patent
Sprache:	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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Beschreibung
Zusammenfassung:	Development inhibitor releasing compounds are thioether compounds capable of releasing on reaction with color developer oxidation products, a diffusible mercaptan that inhibits further development of silver halide. Useful DIR compounds correspond to the formula R1 represents hydrocarbyl Y represents -S- or -NR2- R2 represents hydrogen, hydrocarbyl or an electron-attracting substituent. X in its preferred embodiment represents a heteroaromatic group that when split of together with the sulfur atoms forms a silver halide development inhibiting mercaptane.