Phthalimidyl azo dyes, process for the preparation thereof and the use thereof

摘要

The present invention relates to dyes of formula wherein R₁ is hydrogen, methyl or -BHCO-C₁-C₄alkyl, R₂ is C₁-C₄alkyl, it being possible for the alkyl chain, from C₂ upwards, optionally to be interrupted by an oxygen atom, and R₃ has, independent of R₂, any of the meanings of R₂, and to the process for the preparation thereof and to the use thereof in dyeing or printing semi-synthetic and especially synthetic hydmophobic fiber materials, especially textile materials.