MIXTURE OF WATER-INSOLUBLE MONOAZO DYESTUFFS FOR COLOURING TEXTILE MATERIALS CONSISTING AT LEAST PARTLY OF LINEAR AROMATIC POLYESTERS

摘要

1537335 Mixtures of mono azo dyestuffs derived from 2-hydroxy-3-naphthoic acid arylides ROHNER AG PRATTELN 26 March 1976 [26 March 1975] 12327/76 Heading C4P Novel water-insoluble dyestuff mixtures contain at least 2 monoazo dyestuffs of the formula wherein D is phenyl optionally substituted by one or more alkyl, cyanoalkyl, cyano, alkoxy, alkoxyalkyl, acyloxy, alkylcarbonyl, alkoxycarbonyl, alkylsulphonyl, trifluoromethyl or sulphonamido groups or halogen atoms; R is H, halogen or optionally substituted alkoxy; and A is aryl optionally substituted by one or two optionally substituted alkyl or alkoxy groups or halogen atoms. They are prepared by diazotizing one or more than one diazo component DNH 2 and coupling in alkaline solution or suspension with one or more than one coupling components of the formula or with one or more than one coupling components of the formula followed by conversion to the corresponding carboxylic acid halides and reaction of these with one or more amines of the formula ANH 2 . Th novel dyestuff mixtures are used to dye textile materials based on linear aromatic polyesters.