PROCESS FOR THE MANUFACTURE OF BENZIDINE PIGMENTS AND HYDRAZOBENZENE DERIVATIVES IN CANADA

摘要

PROCESS FOR MANUFACTURE OF BENZIDINE PIGMENTSAbstract of the DisclosureBenzidine pigments are very off?stir?ly made byreducing certain azoxybenzenes with technical ??? toform in good yield a corresponding hydrazch?????? whichcan be further reacted in crude condition to make thepigment.