Anionic azo dyes having a 3-dibenzofuranyl diazo component radical optionally having A2-or 8-sulfo group

摘要

Disclosed are azo dyes containing a diazo component radical of the formula ##STR1## wherein each of Z and Z.sub.1 is independently hydrogen or sulfo,PPWITH THE PROVISO THAT AT LEAST ONE OF Z and Z. sub.1 is hydrogen,PPFOR EXAMPLE MONOAZO AND DISAZO DYES OF THE FORMULA ##STR2## and salts thereof, WHEREINP PK is a coupling component radical of the aromatic carbocyclic, active methylene group-containing aliphatic or aromatic heterocyclic series, andPPZ and Z.sub.1 are as defined above, with the proviso that the dyes contain one or two sulfo groups, and the use thereof for the dyeing and printing of anionic dyeable substrates, particularly polyamide substrates.