Water-soluble monoazo dyes, their preparation and use

Details Water-soluble monoazo dyes, their preparation and use Water-soluble monoazo dyes, their preparation and use

C - Chemistry, Metallurgy

09

B

C09B 29/30 (2006.01) C09B 29/01 (2006.01)

Patent

CA 2354680

Dyes of the formula (1): Image in which M is hydrogen, ammonium, an alkali metal or the equivalent of an alkaline earth metal; X is sulfonyl or -COCH2O-; R1, R2 and R3 independently of one another are hydrogen, halogen, for example fluorine, chlorine or bromine, unsubstituted or chloro- or hydroxy-substituted C1 to C4 alkoxy, for example 2-chloroethoxy or 2-hydroxyethoxy, and the sulfo group is in position 3 or 4 to the NH group, their preparation, and their use for dyeing or printing carboxamido-containing materials.

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