Dyeing Effects Of Bifunctional Reactive Dyes On Knitted Cotton Fabrics

摘要

Several new bifunctional reactive dyes of the Sumifix Supra range that carry monochlorotriazine and sulphato ethyl sulphone reactive systems were developed and their dyeing performance studied. Suitable characteristic properties and fastness properties were examined over the knitted cotton fabrics. The dyes were characterized by spectral data and elemental analysis. The dyes structures were established by preparing the coupling component using H-acid, cyanuric chloride and 2-methoxy-5-methyl (sulphato ethyl) sul-phonyl aniline which was readily coupled with various diazotized 2-amino benzo-thiazole (Figure 1). The results indicated good solubility, a high degree of exhaustion and fixation, excellent fastness degree and higher substantivi-ty over the knitted cotton fabrics.