Abstract
A series of new heterocyclic monoazo disperse dyes have been prepared by coupling 11-amino-13H-acenaphtho[1,2-e]pyridazino[3,2-b]quinazoline-13-one with various mono and di-N substituted derivatives of aniline. All the disperse dyes were characterized by their percentage yield, melting point, UV–visible spectroscopy, elemental analysis, infrared spectroscopy and dyeing performance on Nylon 66 and polyester fibres. The percentage dye bath exhaustion on different fibres have been found to be reasonably good and acceptable. The dyed fibres show fairly good to good fastness to light and very good to excellent fastness to washing, rubbing, perspiration and sublimation.
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