| abstract |
Thiazole azo dyes of the formula in the R¹ C₁-C₁₂ alkyl, which is optionally interrupted by oxygen atoms, phenyl, halogen, cyano or C₁-C₄ alkoxycarbonyl, R² formyl, cyano, C₁-C₄-alkoxycarbonyl or a radical of the formula -CH = CX¹X², where X¹ and X² independently represent cyano or C₁-C₄-alkoxycarbonyl, R³ C₁-C₁₂-alkyl, which is optionally interrupted or substituted by oxygen atoms, C₅-C₇-cycloalkyl, optionally substituted phenyl, furyl, thienyl, C₁-C₄-alkylthienyl or pyridyl and R⁴ and R⁵ independently of one another are C₁-C₁₂-alkyl which is optionally interrupted and / or substituted by oxygen atoms, with the proviso that the alkyl chain in at least one of the radicals R¹, R⁵ and R⁵ is interrupted by oxygen atoms, and their use for dyeing textile fibers. |