5-Arylazo-6-hydroxy-pyridone-2 dyes containing an amino or subst

Details 5-Arylazo-6-hydroxy-pyridone-2 dyes containing an amino or subst 5-Arylazo-6-hydroxy-pyridone-2 dyes containing an amino or subst

1974-06-17

1976-12-21

Higel, Floyd D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260154, 260155, 2602949, 260295AM, C09B 2936, C09B 3114, D06P 108, D06P 370

Patent

active

039988031

ABSTRACT:
Dyes of the formula ##STR1## wherein R.sub.1 is hydrogen or cyano,

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

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