Synthesis of some 4-arylazo-3-hydroxythiophene disperse dyes for dyeing polyester fabrics |
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Authors: | Ehab Abdel-Latif Fathy A Amer |
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Institution: | (1) Department of Chemistry, Faculty of Science, Mansoura University, Mansoura, Egypt |
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Abstract: | A series of novel 4-arylazo-3-hydroxythiophene disperse dyes was synthesized by heterocyclization of ethyl 2-arylhydrazono-2-phenylthiocarbamoyl
acetates with a variety of α-halogenated reagents. The structures of the synthesized dyes were confirmed by UV-Vis, IR, 1H NMR, and MS spectroscopic techniques and elemental analysis. The dyes were applied to conventional polyester fabric by high
temperature exhaust dyeing. These dyes were found to give orange to reddish-violet shades with very good depth, levelness,
and brightness on polyester fabric. The dyed fabric showed moderate to good light fastness and very good fastness to washing
and perspiration. Also the position of color in CIELAB coordinates (L*, a*, b*, H*, and C*) was assessed.
Correspondence: Ehab Abdel-Latif, Department of Chemistry, Faculty of Science, Mansoura University, 35516 Mansoura, Egypt |
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Keywords: | Thiocarbamoyl Thiophene Disperse dyes Polyester fabrics Fastness properties |
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