Synthesis and Characterization of Monomeric and Polymeric Disperse Dyes for Hydrophobic Fibres
Titel:
Synthesis and Characterization of Monomeric and Polymeric Disperse Dyes for Hydrophobic Fibres
Auteur:
Maradiya, H. R. Patel, V. s.
Verschenen in:
International journal of polymeric materials
Paginering:
Jaargang 48 (2000) nr. 1 pagina's 99-114
Jaar:
2000
Inhoud:
Some monomeric disperse dyes based on 2-amino-5-mercapto-1,3,4-thiadiazole have been synthesized by coupling with derivatives of N-phenylacrylamide. Polymeric dyes have been prepared by free radical polymerization of monomeric dyes and were characterized by IR spectra, Intrinsic viscosity, molecular weight by Vapour Pressure Osmometry, thermogravimetry analysis, bleeding test and elemental analysis. The monomeric dves have been also characterized by IR spectral studies and elemental analysis. The purity of dyes was checked by thin layer chromatography. All the dyes were applied as disperse dyes on nylon and polyester fibres. These dyes have been found to give a wide range of colour shades with 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 dyed fibres showed good to excellent fastness to light on nylon and polyester fibres. 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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