New heavy metal complex dyes, process for their manufacture and

Details New heavy metal complex dyes, process for their manufacture and New heavy metal complex dyes, process for their manufacture and

1976-11-01

1978-09-26

Clingman, A. Lionel

Bleaching and dyeing; fluid treatment and chemical modification

Treatment of hides, skins, feathers and animal tissues

Tanning

8 13, 8 43, 8 54, 8178R, 260146R, 260146T, 260147, 260148, C09B 4500, D06P 110

Patent

active

041166248

ABSTRACT:
The present invention provides heavy metal complexes of azo dyes of the formula ##STR1## 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, while A and A' carry at least one sulpho group and contain no other ionogenic substituents.

REFERENCES:
patent: 3562246 (1971-02-01), Barwick et al.

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