Abstract
A series of monomeric dyes was prepared by diazotization of 2-amino-5-mercapto-1,3,4-thiadiazole and coupled with various N-arylmaleimides. The polymeric dyes were prepared by free radical polymerization of monomeric dyes and characterized by IR, intrinsic viscosity, molecular weight by vapor pressure osmometry, thermogravimetry analysis, and elemental analysis. The monomeric dyes were also characterized by elemental analysis and IR spectra. The purity of all the dyes were checked by thin layer chromatography and by application on cellulose triacetate fiber as disperse dyes. All the dyes were found to give various color shades with good-to-very good depth and levelness on fiber. The percentage dyebath exhaustion and fixation on fiber was found to be good-to-very good. The dyeing of monomeric dyes showed very good fastness properties, and their corresponding polymeric dyes showed excellent fastness to light, washing, perspiration, solvent resistance, and sublimation.
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