Synthesis of 2,6-dialkylamino-5-arylazo-3-cyano-4-methylpyridines and their application on synthetic fibres as disperse dyes

Abstract

132-134<span style="font-size:11.0pt;line-height:115%; font-family:" calibri","sans-serif";mso-ascii-theme-font:minor-latin;mso-fareast-font-family:="" calibri;mso-fareast-theme-font:minor-latin;mso-hansi-theme-font:minor-latin;="" mso-bidi-font-family:"times="" new="" roman";mso-ansi-language:en-us;mso-fareast-language:="" en-us;mso-bidi-language:ar-sa"="">Four monoazo disperse dyes, 2,6-dialkylamino-5-arylazo-3-cyano-4-methylpyridines were prepared and their dyeing performance on polyester and polyamide fibres was assessed. The dyeing had bright yellow shades with excellent pick-up and moderate light fastness on both the fibres and moderate sublimation fastness on polyester fibre.</span