Trisazo dye containing a diphenylenesulfone structure

Details Trisazo dye containing a diphenylenesulfone structure Trisazo dye containing a diphenylenesulfone structure

1974-03-13

1976-06-22

Warren, Charles F.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260169, 260173, 260178, 260198, 260199, C09B 3546

Patent

active

039650871

ABSTRACT:
A polyazo dye represented by the formula ##SPC1##
Wherein A is an optionally substituted aromatic ring; B is an aromatic ring having at least one substituent selected from the group consisting of amino, substituted amino and hydroxy; Y is hydrogen, alkali metal, --NH.sub.4 or amine salt residue; n is 1 or 2; and one of R.sup.1 and R.sup.2 is hydroxy and the other is amino.

REFERENCES:
patent: 2148146 (1939-02-01), Zwilgmeyer
patent: 2148252 (1939-02-01), Zwilgmeyer
patent: 2752333 (1956-06-01), Lecher et al.
patent: 2852503 (1958-09-01), Long et al.
patent: 3574181 (1971-04-01), Forter et al.

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