Chromium complexes of sulfo group containing disazo compounds having a resorcinol biscoupling component radical
AssigneeSandoz Ltd.
InventorHerbert Holliger
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Abstract
Water-soluble, anionic, chromium complexes of disazo compounds, at least one of the complex-forming disazo compounds being of the formula, ##STR1## in which ##STR2## is the radical of a carboxy group-containing diazo component of the benzene or naphthalene series, the carboxy group being ortho to the azo group and the diazo component being free from other metallizable groups, and B-- is the radical of a diazo component of the benzene or naphthalene series free from metallizable substituents, which complexes contain at least one water-solubilizing group, are in free acid or salt form and are useful for dyeing and printing substrates such as natural and synthetic polyamides, polyurethanes and anodized aluminum, particularly fur-lined leather.
Claims6
A 1:2 chromium complex of the formula ##STR15## or a salt thereof.
A 1:2 chromium complex of the formula ##STR17## or a salt thereof.
Dependencies are inferred from the claim text.