| abstract |
Azo dyes of the formula I <IMAGE> in the X NR¹R², OR³ or R¹ and R¹ optionally substituted alkyl having 1 to 8 carbon atoms, cycloalkyl having 5 or 6 carbon atoms, alkenyl having 3 to 5 carbon atoms, or optionally substituted phenyl R² is hydrogen or optionally substituted alkyl having 1 to 8 carbon atoms or alkenyl having 3 to 5 carbon atoms, R³ alkyl or cycloalkyl having 5 to 7 carbon atoms, optionally substituted phenyl, their preparation by diazotization of amines of the formula II <IMAGE> and coupling on β-naphthol, as well as their use for dyeing and printing hydrophobic fiber materials. |