Fiber-reactive unsymmetrical 1:2 chromium complex azo dyes

Details Fiber-reactive unsymmetrical 1:2 chromium complex azo dyes Fiber-reactive unsymmetrical 1:2 chromium complex azo dyes

1980-10-14

1983-11-22

Warren, Charles F.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260145B, 260150, 260151, 260148, 260147, 260149, 260146R, 260146D, 260146T, 260153, 260154, 260160, 260206, C09B 4548, C09B 6208, C09B 6224, C09B 6250

Patent

active

044168152

ABSTRACT:
Chromium complex dyes which, in the form of the free acid, have the formula ##STR1## wherein Z is hydrogen, nitro, chlorine, or an arylazo group, Q is a nitrogen atom or the CH-- group, A is the radical of a coupling component which couples in the ortho-position to the oxygen atom if Q is a nitrogen atom, or is the radical of an o-hydroaldehyde if Q is the CH-- group, D is a sulfophenyl radical which can be substituted by nitro or chlorine, or a sulfonaphthyl radical which can be substituted by nitro and is bonded to the azo group in the orthoposition to the oxygen atom, and R is a reactive group. These dyes are obtained by chroming the corresponding o,o'-dihydroxyazo compounds or o,o'-dihydroxyazomethine compounds, the reactive radical R being introduced by acylation before or after the chroming. They are suitable for dyeing natural or synthetic polyamide material.

REFERENCES:
patent: 2931794 (1960-04-01), Ruetimeyer et al.
patent: 2943084 (1960-06-01), Buehler et al.
patent: 3308114 (1967-03-01), Blackhall
patent: 3625935 (1971-12-01), Back et al.
patent: 4001203 (1977-01-01), Back et al.
patent: 4024123 (1977-05-01), Dussy et al.

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