Synthesis, characterization and application of monomeric and polymeric dyes based on N-arylmaleimides

Novel monomeric dyes have been prepared by diazotization of 2,6-dibromo-4-n itroaniline and coupled with various N-arylmaleimides. The polymeric dyes w ere prepared by free radical polymerization of monomeric dyes. The resultan t dyes were characterized by IR spectral studies, intrinsic viscosity, ther mogravimetry analysis, elemental analysis and molecular weight was characte rized by VPO. The monomeric dyes were also characterized by elemental analy sis and IR spectra. The purity of all the dyes were checked by thin layer c hromatography and they have also been applied on nylon and polyester fibres as a disperse dye. These dyes have been found to give various colour shade s with good to very good depth and levelness on each fibre. The percentage dye bath exhaustion on different fibres have been found to be good to very good. The light, washing, rubbing, perspiration and sublimation fastness pr operties of the dyed fibres has been found to be very good to excellent.