A series of new oligomeric disperse dyes were prepared by coupling various diazonium salts of aryl ether to a 2-naphthol-formaldehyde oligomer. They were characterized in terms of their softening points, colour, solubility and infrared and UV–visible spectral studies. The structural property relationships were discussed. The dyeing on polyester and nylon resulted in yellow, orange and pink-to-redcolouration having good to excellent light-fastness and washing-fastness properties.
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