Sandoz Gmbh

Hanspeter Uehlinger

Roland Mislin

Max Oppliger

Disazo compounds of the formula ##STR1## in which A is a diazo component radical,

Disazo compounds having a further unsubstituted or substituted

Compounds of the formula ##STR1## in which R.sub.1 is C.sub.1-4 alkyl,

2-(C.sub.1-4 Alkoxy)carbonylamino-4-(2'-C.sub.1-4

Mixtures of symmetrical and asymmetrical 1:2 cobalt complexes of compounds of the formulae ##STR1## wherein, EACH R.sub.1, independently, is hydrogen or (C.sub.1-4)alkyl, and

Mixtures of 1:2 cobalt complexes of monoazo compounds having an

Compounds of the formula ##STR1## in which R.sub.1 signifies an optionally substituted hydrocarbon radical,

1-Hydroxy-2-arylazo-8-hydrocarbyloxycarbonylaminonaphthalenedisulfonic

Asymmetric 1:2 chromium complexes of the formula ##STR1## in which R.sub.1 signifies a hydrogen or halogen atom or a nitro group,

Asymmetric 1:2 chromium complexes of monoazo compounds having

Dyes of the formula ##STR1## AND SUBSTITUTED DERIVATIVES THEREOF, WHEREIN R is a coupling component radical,

Sulfo group-containing azo compounds having a tetrazo component radical

Disclosed are water-soluble azo dyes of formula I, which are useful for dyeing substrates capable of being dyed by anionic dyes, particularly polyamides, paper and leather, ##STR1## in which the X's each signify a halogen atom, R.sub.1 signifies a hydrogen or halogen atom, or a nitro, hydroxy, --SO.sub.3 H, alkyl or alkoxy group, or an alkylated or acylated amino group, and

Anionic disazo dyes having a 2,2'-dihalodiphenyl tetrazo component

Azo dyes bearing at least one sulphonic acid group and of formula I, ##SPC1## in which

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Hanspeter Uehlinger