PHOTOGRAPHIC ANTIFOGGANTS

PHOTOGRAPHIC ANTIFOGGANTS

1,207,855. Bis - tetrazoles. GEVAERT - AGFA N.V. 2 Oct., 1968 [9 Oct., 1967], No. 46105/67. Heading C2C. [Also in Divisions G2-G3] 1,2 - Bis - (5 - tetrazolyl) - ethene is prepared by heating 0À4 mole of NaN 3 , 0À4 mole of NH 4 Cl and 0À2 mole of fumaronitrile in dimethyl formamide. 1,3 - Bis - (5...

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Bibliographische Detailangaben
Hauptverfasser: FRANS CLEMENT HEUGEBAERT, JOSEF FRANS WILLEMS
Format: Patent
Sprache:eng
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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Zusammenfassung:1,207,855. Bis - tetrazoles. GEVAERT - AGFA N.V. 2 Oct., 1968 [9 Oct., 1967], No. 46105/67. Heading C2C. [Also in Divisions G2-G3] 1,2 - Bis - (5 - tetrazolyl) - ethene is prepared by heating 0À4 mole of NaN 3 , 0À4 mole of NH 4 Cl and 0À2 mole of fumaronitrile in dimethyl formamide. 1,3 - Bis - (5 - tetrazolyl) - propane is prepared similarly from gluctaronitrile.