山形大学紀要（工学） 第7巻 第1号（1962）081-090
Studies on the Synthesis of Fast Dyestuff (VI)
The Synthesis of Direct Dyes in the Chlorantine
Fast Violet 4BLN Series (Part 2)
Tetsunosuke NISHI, Teiji GOTO, Yukio ABE
2-Aminophenol-4-sulphonamide (I) and the diamino-derivative of di-J-acid were isolated from the reduction products of commercial Chlorantine Fast Violet 4BLN. On the other hand, some direct dyes in the Chlorantine Fast Violet 4BLN series were prepared by coupling diazotized sulphone-amide I with di-J-acid, phenyl-,carbonyl-J-acid, 2, 4-di-J-acid-6- phenylamino- or 2,4,6-tri-J-acid-1,3,5-triazine followed by conversion of the coupled products into the corresponding copper-complexes.
From the results ot examination of these products, the following conclusion was drawn:
1) The commercial Chlorantine Fast Violet 4BLN is identical with the copper-complex of the azo dye prepared by coupling of diazotized sulfonamide I with di-J-acid.
2) The introduction of copper atoms into the above mentioned dyes decreases their solubility and increases their washing fastness.
3) The introduction of copper atoms has a bathochromic effect and remarkably improves the light fastness.