| abstract |
ABSTRACT OF THE DISCLOSURE 1:1- and 2:1-metal complexes of bishydrazides of the formula I (I) wherein both A's represent identical or different isocyclic or heterocyclic aromatic radicals, B represents an isocyclic or heterocyclic aromatic radical, and R represents hydrogen, an alkyl group containing 1-6 carbon atoms, or an alkyl radical, and the completing metal ions are bivalent cations of the transition metals, zinc ions or cadmium ions which are useful for pigmenting high molecular organic material. |