ACTIVE DYES, METHODS FOR PRODUCTION THEREOF AND USE THEREOF Russian patent published in 2013 - IPC C09B62/503 C09B62/465 D06P3/10 D06P3/66 

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