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A series of some new disperse-reactive dyes was synthesized by diazo-coupling reaction of 2-amino- 4-phenylthiazole derivatives with pyridone, the disperse dyes thus obtained were refluxed with phosphorus oxychloride to obtain the disperse-reactive dyes. The dyes were characterized by IR spectral studies and visible absorption was carried out in various solvents. The dyeing performance of these dyes where assessed on polyester, nylon and polyester/cotton blend fabrics. These dyes where found to give various shades of red with good depth, brightness and leveling properties on the fabrics. The dyed fabric showed fairly good to very good light fastness and very good to excellent fastness to washing, perspiration and rubbing. The dyebath exhaustion and fixation on the polyester fabric was found to be very good. All the chemicals used in the synthesis of the dyes and intermediates were of analytical grade and were used without purification. Melting points were determined by the open capillary method using the Gallenkamp melting apparatus. The visible absorption spectra were measured using Jenway 6405 UV/Vis spectrophotometer, IR was measured and recorded in KBr pellets using the FTIR-8400S Fourier Transform Infra-red Spectrometer, and GC-MS using the GCMS-QP2010 PLUS SHIMDAZU Japan. Synthesis of 2-amino-4-phenylthiazole Resublimed iodine (7.6g, 0.03mol) was added to the slurry of acetophenone (3.5ml, 0.03mol) and thiourea (4.56g, 0.06mol) and the mixture was heated in an oil bath at 130-140

Synthesis of Some Azo Disperse-Reactive Dyes From 2- Aminothiazole Derivatives And Their Application Properties On Polyester/Cotton Blend