Water-soluble monoazo dyestuffs

Details Water-soluble monoazo dyestuffs Water-soluble monoazo dyestuffs

C - Chemistry, Metallurgy

09

B

8/26, 260/171.5

C09B 29/00 (2006.01) C07D 277/66 (2006.01) C09B 29/01 (2006.01) C09B 29/32 (2006.01) D06P 1/02 (2006.01)

Patent

CA 1109062

ABSTRACT OF THE DISCLOSURE A water-soluble monoazo dyestuff useful for dyeing or printing natural or synthetic material containing hydroxyls and nitrogen has the formula Image or a tautomeric form thereof, wherein R1 is methyl, ethyl or 6-methyl-7-sulphobenzthiazol-2-yl, R2 is methyl, methoxy or ethoxy, R3 is methyl or ethyl, R4 and R5 may be the same or different and are hydrogen, methyl or ethyl, M is hydrogen, alkali metal or ammonium and ? is 0 or 1.

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