Metal complexes of disazo dyes

Details Metal complexes of disazo dyes Metal complexes of disazo dyes

1981-09-08

1985-01-15

Sneed, Helen M. S.

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

Organic compounds

Azo

534695, 534709, C09B 4500

Patent

active

044937989

ABSTRACT:
Metallizable disazo dyes of the formula (1) ##STR1## in which A and A' independently of one another are each the radical of a diazo component of the benzene or naphthalene series, at least one of the groups A or A' carrying a metallizable hydroxyl or carboxyl group in the o-position relative to the azo group, and X is substituted or unsubstituted phenylene, naphthylene or C.sub.2 -C.sub.4 -alkylene and R is C.sub.1 -C.sub.4 -alkyl, COO-Q or CONQQ.sub.1, in which Q and Q.sub.1 are each hydrogen or C.sub.1 -C.sub.4 -alkyl.
In the form of their cobalt or chromium complexes, the dyes are suitable for dyeing natural or synthetic polyamide materials, and especially wool or leather.

REFERENCES:
patent: 1984096 (1934-12-01), Straub et al.
patent: 2820782 (1958-01-01), Maderni et al.
patent: 3185676 (1965-05-01), Klein
patent: 3203948 (1965-08-01), Neier
patent: 3221003 (1965-11-01), Scholl et al.
patent: 3314932 (1967-04-01), Scholl et al.
patent: 4116952 (1978-09-01), Beffa et al.
patent: 4212801 (1980-07-01), Baumann
patent: 4315854 (1982-02-01), Puntener et al.
patent: 4331596 (1982-05-01), Beffa et al.

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