Benzene-azo-indole dyestuffs

Details Benzene-azo-indole dyestuffs Benzene-azo-indole dyestuffs

1975-06-17

1977-11-29

Higel, Floyd D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260156, 26032612R, 26032613R, 26032613A, 26032616, C09B 2936, C09B 4318, D06P 106, D06P 324

Patent

active

040605213

ABSTRACT:
Dyestuffs which in form of the free acid correspond to the formula ##STR1## wherein D represents the radical of an aromatic-carbocyclic diazo component, X represents OH, ##STR2## R.sub.1 and R.sub.2 represent hydrogen, alkyl, aryl, aralkyl, cycloalkyl or carbalkoxy, but either R.sub.1 or R.sub.2 must be hydrogen,

REFERENCES:
patent: B327109 (1975-01-01), Wolfrum et al.
patent: 3255173 (1966-06-01), Dehnert et al.
patent: 3891619 (1975-06-01), Sommer et al.

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