PROCESS FOR THE PREPARATION OF HIGHLY CONCENTRATED AQUEOUS SOLUTIONS OF CATIONIC AZOIC DYES.

摘要

A PROCEDURE FOR THE PRODUCTION OF HIGH CONCENTRATION SOLUTIONS OF SPECIFIC AZO CATION DYES IS DESCRIBED. SOLUTIONS ARE OBTAINED BY DIAZOTATING A DIAZOIC COMPOUND IN A SULFURIC SOLUTION, COUPLING A COUPLING COMPONENT, LETTING A BICARBONATE ACT ON THE DYE COLOR OBTAINED AND TRANSFORMING THE BICARBONATE OF DYE WITH ORGANIC ACID.