Process for preparing azo dyes

Details Process for preparing azo dyes Process for preparing azo dyes

1979-02-08

1981-01-27

Shaver, Paul F.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260152, 260162, 260196, 260205, 260206, 260207, 2602071, C09B 2922, C09B 2936

Patent

active

042474582

ABSTRACT:
Disclosed is a process for coupling a disperse dye diazo component selected from diazonium salts of substituted and unsubstituted phenyl, 2-thiazolyl, 2-benzothiazolyl, 1,3,4-thiadiazol-2-yl, 1,2,4-thiadiazol-5-yl, 2,1-benzisothiazol-3-yl, isothiazol-5-yl, 1,3,4-triazol-2-yl, pyrazol-5-yl, imidazol-2-yl, phthalimid-3 or 4-yl, 1-naphthyl, and 2-thienyl radicals comprising reacting with said component a disperse dye coupler having in the coupling position on the ring a substituent typified by --CHO, --COOH, --COCH.sub.3, --SO.sub.3 H, displaceable diazonium radicals including the above, and another or the same coupler linked to said coupler by certain bivalent radicals.

REFERENCES:
patent: 4153343 (1979-05-01), Bloom et al.
patent: 4153607 (1979-05-01), Eilingsfeld et al.

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