Azo dye derivatives of 2,3-naphthalenediols

Details Azo dye derivatives of 2,3-naphthalenediols Azo dye derivatives of 2,3-naphthalenediols

1979-07-10

1981-01-27

Shaver, Paul F.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260174, 260177, 260187, 260191, C09B 3302

Patent

active

042474590

ABSTRACT:
Azo dye compounds of substantially neutral density which are particularly useful in liquid electrographic developers and are of the formula: ##STR1## wherein: R.sup.1 is hydrogen, --COOH, --CONH.sub.2, --SO.sub.2 NH.sub.2 or --SO.sub.3 M and M is a cation;

REFERENCES:
patent: 2497246 (1950-02-01), von Glahn
Lubs, "The Chemistry of Synthetic Dyes and Pigments", Reinhold Publishing Corp., N.Y. (1955), pp. 670-671.

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