FIELD: chemistry.
SUBSTANCE: invention relates to novel active dyes, methods of their obtaining and their application in dyeing or printing textile fibrous materials. An active dye of formula 
in which B represents a radical of formula -CH2-CH(R12)- or -(R12)CH-CH2-, in which R12 represents C1-C4alkyl, R5 represents hydrogen or sulpho, Z1 represents a fibre-reactionable group of formula -SO2-Y (3a) or -NH-CO-(CH2)l-SO2-Y (3b), R7 represents amino, R8 represents C2-C4alkanoylamino or ureido, X1 and X2 represent, each independently on the other, fluorine or chlorine, k equals a number 2 or 3, l equals a number 2 or 3 and Y represents vinyl or β-sulphatoethyl.
EFFECT: invention makes it possible to obtain the improved active dyes with high reaction ability, chemical affinity, as well as with good dyeability with a high degree of fixation.
8 cl, 2 tbl, 8 ex
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