Heavy metal complex dyes, process for their manufacture and...

Details Heavy metal complex dyes, process for their manufacture and... Heavy metal complex dyes, process for their manufacture and...

C - Chemistry, Metallurgy

09

B

260/161, 8/21

C09B 45/24 (2006.01) D06P 1/10 (2006.01)

Patent

CA 1077927

Abstract of the Disclosure The present invention provides heavy metal complexes of azo dyes of the formula Image (I), wherein each of A and A' represents a coupling component of the phenylenediamine, naphthol, naphthylamine, pyrazolone, aminopyrazole, acylacetamide, pyridone, 2,4,6-triaminopyridine or barbituric acid series, which is bound in ortho-position to a hydroxy, amino or enolisable keto group to the azo group, whilst A and A' carry at least one sulpho group and contain no other ionogenic substituents.

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