Dyeing characteristics of Nylon, cotton and N/C mixture fabrics with reactive-disperse dyes containing a sulphatoethylsulphone group

Abstract

The dyeing and color fastness properties of three reactive-disperse dyes containing a sulphatoethylsulphone group on Nylon, cotton and N/C mixture fabrics were examined. Reduction-clearing was more effective in removing the unfixed dyes than soaping since the reactive-disperse dye became hydrophobic during dyeing process. Nylon was dyed well with three reactive-disperse dyes at pH 5~8 and difference in chemical structure between dyes did not affect the final color strength of the dyed Nylon fiber, but their build-up properties on Nylon were not so good. The color strength of the dyed cotton was not as high as that of Nylon. The color strength of cotton increased by lowering dyeing temperature when the reactive-disperse dyes having hydroxy group were used. Nylon absorbed more dye molecules than cotton in simultaneous dyeing, the color difference between Nylon and cotton could be reduced as the dyeing temperature decreased. N/C mixture fabric was dyed well at 60 o C with the reactive-disperse dyes having hydroxyl group when applied at pH 7 and 60 o C, and their build-up properties were good. It was also found that washing fastness and rubbing fastness of dyed Nylon, cotton and N/C fabrics with the reactive-disperse dyes were excellent, while light fastness was moderate.

Investigation of Mordant Application in Reactive Dyeing of Nylon Fabrics

“…14 Two of the studies 12,13 were performed in the absence of electrolyte and proprietary leveling agent, and generally syntan treatment did not improve the wash fastness of the dyeings. Kim et al 18 researched the dyeing characteristics of nylon, cotton and N/C (nylon/cotton) mixture fabrics with reactive-disperse dyes containing a sulfatoethylsulfone group and concluded that washing fastness and rubbing fastness of dyed nylon, cotton and N/C fabrics with the reactive-disperse dyes were excellent, while light fastness was moderate. Kim et al 19 (the same research team) also researched dyeing properties of nylon, polyethylene terephthalate (PET), and N/P (nylon/polyester) mixture fabric with reactive-disperse dyes having a sulfatoethylsulfone group and concluded that the reactive-disperse dyes were found to be adequate for the one-bath, one-step dyeing of N/P mixture fabric when applied at pH 5 and 120 ο .…”

Development of Dyeing Process for Sulphatoethylsulphone Reactive-Disperse Dye on Natural and Synthetic Fibers

“…Two-step dyeing process for blended fibers could be replaced with one-step dyeing by employing reactive-disperse dyes. Factors affecting the dyeing ability of reactive-disperse dyes on different types of fibers are the dye structure and dyeing conditions [9][10][11][12][13]. In our previous work, the reactive-disperse dye was synthesized by using aminophenyl-4-(-sulphatoethylsulphone) as a diazo component and N,N-diethyl-m-toluidine as a coupling agent aiming for dyeing on cotton, PLA and cotton/PLA blended fabrics [14].…”

Preparation of reactive nanoscale carbon black dispersion for pad coloration of cotton fabric

“…In this study, the reactive polymeric dispersant SMA–ESA was synthesised by amidation reaction between ESA and SMA . A reactive nanoscale CB dispersion was prepared with SMA–ESA and the colouring performance of the fabrics was further investigated.…”