Synthesis and Application of New Ureido Reactive Dyes

Abstract

New disazo and polyazo ureido reactive dyes incorporating different reactive systems were synthesized and applied to cotton fabric by the exhaust dyeing method. Different factors affecting the dye ability and fastness properties of such dyes are investigated. Bis(monochlorotriazine) reactive dyes displayed higher primary exhaustion values compared to those obtained with bis(sulphatoethysulphone) and bis(monochlorotriazine/ sulphatoethysulphone) reactive dyes under different neutral exhaustion conditions. The results obtained indicate that the fixation efficiencies of these dyes were higher than those of dyes incorporating the bis(dichlorotriazine) reactive system. The results assessed for alkaline exhaust dyeing indicate that the bis(monochlorotriazine/sulphatoethylsulphone) dye was less sensitive to the variation in fixation temperatures than the other reactive dyes. The fastness properties of the ureido reactive dyes were fair to good.The improved dyeing performance of such type of ureido reactive dyes should lead to the design of reactive dyes with good application and fastness properties on cotton fabric, and provide practical solutions for low-salt dyeing. The present study of synthesis of disazo and polyazo ureido reactive dyes of high molecular structure, and its application to cotton fabric by the exhaust dyeing method is novel and could be applied in the industry.

Synthesis, stability and printing properties of a novel 2‐sulphophenoxy‐4‐chloro‐s‐triazine reactive dye for ink‐jet printing of wool

“…These results clearly reflect the difference in the reactivity of both dyes. The comparatively lower reactivity exhibited by the 2‐sulphophenoxy‐4‐chloro‐s‐triazine dye 1b makes it ideally suited to the ink‐jet printing process, whereas the dichloro‐s‐triazine dye 1a , being highly reactive, not only reacts with wool but also hydrolyses under selected conditions of fixation and results in moderate fixation …”

Trends in the synthesis and application of some reactive dyes: A review

“…Structure 9. Ureido reactive dyes prepared byAli et al (2012).Ezeribe et al (2013) have been synthesized bifunctional reactive dyes via 4-(4-Phenyl)-1,3-Thiazol-2-Amine and 4-(4-bromophenyl)-1,3-Thiazol-2-Amine. Diazo components of 4-(4-Phenyl)-1,3-Thiazol-2-Amine and 4-(4-bromophenyl)-1,3-Thiazol-2-Amine were coupled with J-Acid and other coupling components, to be obtain the reactive dyes.…”