Heavy metal complexes of azo dyestuffs containing a heterocyclic

Details Heavy metal complexes of azo dyestuffs containing a heterocyclic Heavy metal complexes of azo dyestuffs containing a heterocyclic

1974-04-10

1977-01-04

Warren, Charles F.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260146D, 260146T, 260147, 260153, 260154, 260155, 260156, 260297R, 260297Z, C09B 4500

Patent

active

040012034

ABSTRACT:
Heavy metal complexes can be prepared from azo compounds that contain a heterocyclic diazo component containing a complex-forming group such as hydroxyl, carboxyl, alkoxy or amino, or containing a hetero nitrogen atom able to form a coordinate bond, exemplified by quinolinyl and benzthiazolyl. The coupling component is 5-halogeno-2,3-dihydroxypyridyl where halogen is preferably chloro or bromo. The dyestuffs are useful, inter alia, for dyeing natural and synthetic polyamides such as wool and nylon. The dyeings obtained are uniform, are resistant to acid and alkali, are fast to light and to rubbing and barely change their appearance in artificial light.

REFERENCES:
patent: 1862361 (1932-06-01), Dohan et al.
patent: 2294380 (1942-09-01), Braker
patent: 2431190 (1947-11-01), Morgan
patent: 2857372 (1958-10-01), Straley et al.
patent: 3419570 (1968-12-01), Petersen et al.

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