Azo dyes having a 6-hydroxy-pyridone-2 coupling component radica

Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal

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546296, 546288, 546287, 546256, 546261, 546257, 546258, 546271, 546284, 546283, 546193, 546194, 546280, 544364, 544360, 544365, 544131, C09B 2936, D06P 118, D06P 342, D06P 354

Patent

active

041406842

ABSTRACT:
Dyes of the formula ##STR1## wherein R.sub.1 is a carbocyclic or heterocyclic diazo component radical,

REFERENCES:
patent: 2431190 (1947-11-01), Morgan
patent: 3487066 (1969-12-01), Ritter et al.
patent: 3905901 (1975-09-01), Berrie et al.

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