Process for the manufacture of bis-azomethine metal complex colo

Details Process for the manufacture of bis-azomethine metal complex colo Process for the manufacture of bis-azomethine metal complex colo

1975-07-28

1977-02-15

Curtis, Allen B.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260429C, 260566F, C07F 306, C07F 308, C07F 1500

Patent

active

040082253

ABSTRACT:
Process for the manufacture of bis-azomethine metal complex colorants of the formula ##STR1## wherein A denotes an isocyclic or heterocyclic aromatic radical, X denotes an isocyclic or heterocyclic aromatic radical to which the N-atoms are bonded in the o-position or peri-position, or an alkylene radical containing 2-8 C atoms, and M denotes a divalent transition metal ion, a zinc ion or cadmium ion, characterized in that an o-hydroxyaldimine compound of the formula ##STR2## wherein A has the abovementioned meaning and R denotes an alkyl, cycloalkyl or aryl radical, is reacted with a diamine of the formula

REFERENCES:
patent: 2418747 (1947-04-01), Bavley
patent: 3632618 (1972-01-01), Pacheco et al.
patent: 3687991 (1972-08-01), Gaeng et al.
patent: 3864371 (1975-02-01), Inman et al.
patent: 3875200 (1975-04-01), L'Eplattenier et al.
patent: 3896113 (1975-07-01), Kaul

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