Synthesis of Several Newly Acid Dyes and their Application in Textile Dyeing

Synthesis of new acid dyes, mono azo and diazo derived from 3-[2-(cyanomethyl)-thiazol-4-yl]coumarin and 3-(2-amino-thiazol-4-yl)coumarin using various derivatives amine, and their utilization in dyeing of textile fabrics is attempted in this article. The prepared dyestuffs were established using melting point, elemental analysis, infrared, ultraviolet-visible spectroscopy (UV/VIS) and nuclear magnetic resonance (1H-NMR) data. The suitability of the prepared dyestuffs for dyeing of wool and silk fabrics has been investigated. The dyed fabric show good light fastness, very good rubbing, perspiration, washing and excellent sublimation fastness. These dyes have been color shade from blue to violet with very good depth and levelness on fabrics. The dye bath exhaustion and fixation on fabric has been found to be very good.