FIELD: chemistry.
SUBSTANCE: invention relates to novel asymmetrical and symmetrical active dioxazine dyes of formula (1), meant for dyeing and printing hydroxy- or nitrogen-containing fibre materials. 
(1), where Q1 is hydrogen, halogen or a radical of formula 
(2a) or 
(2b), T is a group which is reactive towards fibre -CO-(CH2)m -SO2-Y, where Y is vinyl or - CH2-CH2-U, where U is a group which is removable in alkaline conditions; m equals 2, 3 or 4. Disclosed also is a method of producing said dyes (1) and use thereof.
EFFECT: dyes have high degree of selectivity, fixation, stability of the fibre-dye bond with good resistance to light and wet treatment.
10 cl, 4 tbl, 6 ex
