Metal of hydroxy-phenylaze and hydroxy-naphthylazo compounds as

Details Metal of hydroxy-phenylaze and hydroxy-naphthylazo compounds as Metal of hydroxy-phenylaze and hydroxy-naphthylazo compounds as

1989-12-13

1990-12-11

Higel, Floyd D.

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

Organic compounds

Azo

534716, 534721, C09B 4501, C09B 4514, D06P 110, G03G 908

Patent

active

049772490

ABSTRACT:
A metal complex compound having the formula: ##STR1## wherein each of X.sub.1 and X.sub.2 which may be the same or different, is a nitro group, a halogen atom, a phenylazo group (inclusive of a substituted phenylazo group) or a naphthylazo group (inclusive of a substituted naphthylazo group), each of n.sub.1 and n.sub.2 which may be the same or different, is an integer of from 1 to 3, each of R.sub.1 and R.sub.2 which may be the same or different, is an amino group, a monoalkylamino group, a dialkylamino group, an acetylamino group and a benzoylamino group (inclusive of a substituted benzoylamino group), M is a chromium atom, an iron atom, a cobalt atom, m is an integer of at least 2, and y.sup.m.sym. is a bivalent or higher polyvalent metal ion. The metal complexes are useful as near infrared absorbers.

REFERENCES:
patent: 4553976 (1985-11-01), Raisin et al.
Chem. Abst., vol. 102, 1985, p. 522 #103733 (v) and JP-A-59-11,385, Hadogaya, II.

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