Trisazo or tetrakisazo dyes containing a heterocyclic group

Details Trisazo or tetrakisazo dyes containing a heterocyclic group Trisazo or tetrakisazo dyes containing a heterocyclic group

1980-01-16

1981-08-25

Higel, Floyd D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260154, 260156, 260157, 260158, 8437, C09B 3122, C09B 3130, C09B 3322, C09B 3328

Patent

active

042858607

ABSTRACT:
Polyazo dyes which in the form of the free acids correspond to the general formula I ##STR1## where D is the radical of a diazo component, or a radical of the formula ##STR2## n is 0 or 1, R.sup.1 is hydrogen, chlorine, bromine, methyl, ethyl, methoxy, ethoxy, carboxyl, trifluoromethyl, methylsulfonyl, ethylsulfonyl or hydroxysulfonyl,

REFERENCES:
patent: 4097476 (1978-06-01), Wicki

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