PROCEDURE FOR PREPARING NEW SERIES monoazo dyestuffs pyrazolones

摘要

Process for preparing monoazo dyestuffs new series pyrazolones essentially characterized by the fact coupling a diazcompuesto of an amine of the formula ** (see formula) ** wherein X means an amide group Sulfacide located in position -p regarding one of the -COOH and -NH 2 groups with a pyrazolone of the formula ** (See formula) ** in which R an aromatic radical of the benzenes series and Z is an amide group which Sulfacide found in the dye molecule contains a hydrocarbon radical crimp the nitrogen atom hydrocarbon radicals of both group Sulfacide amide together contain to sum 9 carbon atoms and the starting materials regardless of single carboxyl group of the diazo component not containing or carboxyl groups or groups sulfácidos.