Azo dyes, their preparation and use
AssigneeCiba-Geigy Corporation
InventorsKarl Seitz, Dieter Mausezahl
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Abstract
Azo dyes of the formula ##STR1## in which D is the sulfo group-containing radical of an aromatic or heterocyclic diazo component, which can be further substituted and itself can contain an azo bridge, R.sub.1 and R.sub.2 independently of one another are each a hydrogen atom or a substituted or unsubstituted alkyl or aryl radical and X is a substituted or unsubstituted alkyl or alkenyl radical, and their heavy metal complexes, it being possible for the azo dyes of the formula (1) and their heavy metal complexes to contain reactive radicals.
Claims8
An azo dye of the formula ##STR40## wherein D is a diazo component of the benzene or naphthalene series which contains a sulfonic acid group and a fiber-reactive radical, capable of reacting with the hydroxyl groups of cellulose or with the amino groups of natural or synthetic polyamides with the formation of covalent chemical bonds therewith, said fiber-reactive radical bonded to a ring carbon atom of D via an --N(R)--group, in which R is hydrogen or alkyl of 1 to 4 carbon atoms, a --CH.sub.2 --NH--bridge or an ##STR41## bridge, R.sub.1 is hydrogen or an alkyl radical having 1 to 4 carbon atoms, R.sub.2 is an alkyl radical having 1 to 4 carbon atoms and X is a substituted or unsubstituted alkyl or alkenyl radical.
Dependencies are inferred from the claim text.