| abstract |
The present invention relates to azo dyes of formula n n n n n n n n n n whereinn nR 1 denotes C 1 -C 12 alkyl which is unsubstituted or substituted by one or more C 1 -C 12 alkoxy groups, hydroxyl groups, amino groups, cyano groups or halogen atoms and which may be interrupted one or more times by the radical —O—, —S—, —NR 4 —, —COO— or —OOC—;n nR 4 is hydrogen or C 1 -C 12 alkyl;n neither R 2 is cyano and R 3 is halogen or R 2 is halogen and R 3 is cyano; andn nAr represents a carbocyclic or heterocyclic aromatic radical,n nto the process for the preparation thereof, to mixtures containing said dyes and to the use thereof in dyeing or printing semi-synthetic and especially synthetic hydrophobic fibre materials, more especially textile materials. |