Abstract
Various novel bifunctional azo reactive dyes were synthesized by tetrazotized 1,4-benzenediamine and coupling to various coupling components such as 4-nitroanilino cyanurated H-acids, 4-nitroanilino cyanurated J-acid, 4-nitroanilino cyanurated Laurent acid, 4-nitroanilino cyanurated Tobias acid and 4-nitroanilino cyanurated Gamma acid) respectively. The structures of the synthesized novel bifunctional azo reactive dyes were characterized and confirmed by melting point, FT-IR spectroscopy, FT-IR, 1H-NMR, MS and UV-visible spectroscopy. The synthesised novel bifunctional azo reactive dyes were applied on wool fabrics under typical exhaustion process and their dyeing properties were evaluated. The percentage exhaustion and percentage fixation of the synthesised dyes on wool fabrics were very good. All the synthesised dyes gave well to excellent properties to washing, light and perspiration respectively.
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