PHOTOGRAPHIC DYE DIFFUSION TRANSFER PROCESS AND A CORRESPONDING PHOTOGRAPHIC MATERIAL

摘要

1321046 Photographic dyestuffs AGFAGEVAERT AG 10 June 1970 [13 June 1969] 28041/70 Heading C4P [Also in Division G2] Compounds of the mono- and dis-azo, phthalocyanine, and anthraquinone-benzothiazole series containing the groupings (a) -SO 2 -NH-N =, (b) -SO 2 -NH-N= CH- or (c) -NH-N = CH- are prepared by reacting the corresponding (a) sulphofluoride and hydrazine, (b) sulphohydrazine and aldehyde or (c) hydrazine and aldehyde compounds.