Fisher, Christen & Sabol
Process for producing dianthraquinone-N,N'-dihydrazine and its chlorination product
 A process for producing dianthraquinone-N,N'-dihydrazine or its chlorination product, which comprises condensing 1-aminoanthraquinone at an elevated temperature in the presence of 1,3-dimethyl-2-imidazolidinone using an oxidizing agent and an alkaline condensing agent, and subjecting the resulting condensation product to a treatment known per se. 
Mitsui Toatsu Chemicals, Inc.
C
C09B
inventional
Tamio Kimitoshi Tunehiro Hiroshi
Mikoda Kato Sakai Aiga