The main aim of this paper is the synthesis of new azo nitroso-based disperse dyes with better dyeing properties on synthetic fibers. In this regard, bis-azo nitroso naphthalene dyes were synthesized via the diazo coupling reactions of 4-nitroaniline with 1-hydroxy-2-nitrosonapthalene. Products formed were characterized by 1H and 13C NMR. Absorption values in the UV-vis spectra of the derivatives under study were quite close and they exhibited multiple maxima in the 386 – 513nm range. The dyeing process, dye exhaustion on polyethylene terephthalate (PET) and polyamide 6 (nylon 6) fabrics, and the durability of the dyes on the textile substrates were evaluated. It was found that the light fastness ratings of the dyed fabrics could reach grade 6/7 to 7, washing fastness gave excellent values of grade 5 while rubbing and perspiration fastness grades were rated at 4/5 to 5 on the International Geometric Scale. The results obtained suggest that the dyes could be used as disperse dyes on synthetic polymers fibers.
Augustine, A., & otutu, J. (2020). Synthesis of Nitroso-Based Bis-Azo Dyes And Their Dyeing Properties For Polyethylene Terephthalate And Polyamide. Egyptian Journal of Chemistry, 63(10), 3949-3959. doi: 10.21608/ejchem.2020.23484.2427
MLA
Asiagwu K Augustine; johnson o otutu. "Synthesis of Nitroso-Based Bis-Azo Dyes And Their Dyeing Properties For Polyethylene Terephthalate And Polyamide", Egyptian Journal of Chemistry, 63, 10, 2020, 3949-3959. doi: 10.21608/ejchem.2020.23484.2427
HARVARD
Augustine, A., otutu, J. (2020). 'Synthesis of Nitroso-Based Bis-Azo Dyes And Their Dyeing Properties For Polyethylene Terephthalate And Polyamide', Egyptian Journal of Chemistry, 63(10), pp. 3949-3959. doi: 10.21608/ejchem.2020.23484.2427
VANCOUVER
Augustine, A., otutu, J. Synthesis of Nitroso-Based Bis-Azo Dyes And Their Dyeing Properties For Polyethylene Terephthalate And Polyamide. Egyptian Journal of Chemistry, 2020; 63(10): 3949-3959. doi: 10.21608/ejchem.2020.23484.2427
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