Abstract
Eight monomeric dyes have been prepared by coupling 2-amino-3-carbethoxy-4,5-dimethylthiophene with various N-phenylmaleimides. Polymeric dyes have been prepared by free radical polymerization of monomeric dyes and they are characterized by IR spectra, Intrinsic viscosity, molecular weight by Vapour Pressure Osmometry, thermogravimetry analysis and elemental analysis. The monomeric dyes have been also characterized by IR spectral studies and elemental analysis. All the dyes were applied as a disperse dyes on nylon and polyester fibres. The dyed fibres showed fair to good fastness to light on nylon and fair fastness on polyester. The washing, rubbing, perspiration and sublimation fastness properties of the dyed fibres has been found to be very good to excellent.
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