Water-soluble monoazo dyestuffs

Details Water-soluble monoazo dyestuffs Water-soluble monoazo dyestuffs

1979-03-19

1981-03-03

Niebling, John F.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C09B 2922

Patent

active

042540267

ABSTRACT:
A water-soluble monoazo dyestuff useful for dyeing or printing natural or synthetic material containing hydroxyls and nitrogen has the formula ##STR1## or a tautomeric form thereof, wherein R.sup.1 is methyl, ethyl or 6-methyl-7-sulphobenzthiazol-2-yl, R.sup.2 is methyl, methoxy or ethoxy, R.sup.3 is methyl or ethyl, R.sup.4 and R.sup.5 may be the same or different and are hydrogen, methyl or ethyl, M is hydrogen, alkali metal or ammonium and n is 0 or 1.

REFERENCES:
patent: 1833269 (1931-11-01), Stusser
patent: 2283823 (1942-05-01), Sieglitz
patent: 3274171 (1966-09-01), Anderson
patent: 4001206 (1977-01-01), Schoefberger

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