Abstract
The present research work was carried out due to the problem of hydrolysis associated with monoazo reactive dyes. In the study a series of bifunctional azo reactive dyes based on aromatic diamine moeity were synthesized via cyanuration of various acid (H-acid, J-acid, Laurent acid, Tobias acid and Gamma acid and Condensing them with 4-nitroaniline acids, then coupling with tetrazotized solution of 4,4-diaminodiphenyl sulphone to obtain a series of bifunctional Dichloro-s-triazinyl (DCT) azo reactive dyes. The synthesised dyes were applied on wool fabric under typical exhaustion process and their dyeing properties were evaluated. The structures of the synthesised dyes were characterised and confirmed by melting point, UV-visible spectroscopy, FT-IR spectroscopy, 1HNMR, MS. The percentage exhaustion and percentage fixation of the synthesised dyes on wool fabric was very good, which is an indication of proper diffusion and fixation onto the fabric. All the synthesised dyes gave well to excellent properties to washing, light and perspiration respectively.
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