TRIAD DYEING PROCESS AND MIXTURE USED THEREIN Russian patent published in 2008 - IPC D06P3/66 D06P3/10 C09B67/22 

FIELD: dyes and dyeing processes.

SUBSTANCE: invention relates to a process of dyeing or printing on hydroxy- or nitrogen-containing organic substrates with active dye mixtures. Invention describes triad dyeing or printing process using dye mixture containing (i) red coloring compound of formula (I): (I), where R₁ represents saturated or unsaturated C₁-C₄-alkyl; R₃ and R₄, independently of each other, represent H, OH, CN, C₁-C₂-alkyl, SO₃H, COOH, O-C₁-C₂-alkyl, or NH₂; X is halogen atom; and Y is -CH=CH₂ or -CH₂CH₂-Z (Z = alkali-cleaved moiety); (ii) yellow or orange coloring compound and blue coloring compound. Mixtures of active compounds for triad dyeing or printing as well as hydroxy- or nitrogen-containing organic substrates printed therewith are also described.

EFFECT: achieved high compatibility of dyes resulting in quality triad dyeing or printing.