Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1979-09-10
1982-01-19
Higel, Floyd D.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
260145B, 260145C, 260146R, 260146D, 260147, 260148, 260149, 260150, 260151, 260154, 260159, 260166, 260168, 260174, 260176, 260177, 260178, 260179, 260180, 260184, 260186, 260187, C09B 4506, C09B 4526, C09D 4548, D06P 110
Patent
active
043116418
ABSTRACT:
The invention relates to chromium complex dyes which, in the form of the free acid, have the formula ##STR1## wherein X is a direct bond or a bridge member, each of Z and Z' independently is a nitrogen atom or a --CH-group, p is 1 or 2, each of Y and Y' independently is an oxygen atom or a group of the formula --NR--, wherein R is hydrogen or low molecular alkyl, with the proviso that if Z or Z' is a --CH-group, Y or Y' must be an oxygen atom, R.sub.1 is hydrogen or a substituent, B is a benzene or naphthalene radical, A is the radical of an o-hydroxyaldehyde if Z' is the --CH-group or, if Z' is a nitrogen atom, A is the radical of a coupling component which couples in the ortho-position to Y', D is the radical of an o-hydroxyaldehyde if Z is the --CH-group or, if Z is a nitrogen atom, D is the radical of a coupling component which couples in the ortho-position to Y, and n is an integer from 1 to 10. The invention also relates to the manufacture of these dyes by metallization and to their use for dyeing polyamide, in particular leather.
REFERENCES:
patent: 2491928 (1949-12-01), Miller et al.
patent: 2933488 (1960-04-01), Biedermann et al.
patent: 3391132 (1968-07-01), Beffa et al.
patent: 3459727 (1969-08-01), Steiner et al.
patent: 4033942 (1977-07-01), Beffa et al.
patent: 4052374 (1977-10-01), Baumann
Ciba-Geigy Corporation
Higel Floyd D.
McC. Roberts Edward
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