1:2 metal complexes of polyazo dyes having a sulpho substituted

Organic compounds -- part of the class 532-570 series – Organic compounds – Azo

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534700, 534701, 534704, 534705, 534707, 534709, C09B 4526, C09B 4530, C09B 4532, D06P 110

Patent

active

056022379

ABSTRACT:
The invention provides a 1:2 metal complex in which at least one of the complexants is a polyazo compound of formula ##STR1## wherein --A.sub.1 --(CO).sub.p --OH signifies the radical of a diazo component of formula H.sub.2 N--A--(CO).sub.p --OH, in which the substituent --(CO).sub.p --OH is in ortho-position to the diazotizable amino group --NH.sub.2, --A-- is the ortho-bivalent radical and p signifies 0 or 1, or a modified derivative thereof,

REFERENCES:
patent: 2861985 (1958-11-01), Ischer et al.
patent: 3399187 (1968-08-01), Durig et al.

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