Process for trichromic dyeing or printing

摘要

Dye mixtures containing: (a) symmetric dyes comprising blue bis(2-amino-8-hydroxy-6-sulphonaphthyl-1-azo)-azobenzene or -azoxybenzene dye(s) of formula (I), red 2,4-bis((2-amino-8-hydroxy-6-sulphonaphthyl-1-azo)-phenylamino)-6-halo -1,3,5-triazine dye(s) of formula (II) and yellow or orange 2,4-bis(naphthyl azo phenylamino)- or 2,4-bis(phenylazo naphthylamino)-6-halo-1,3,5-triazine dye(s) of formula (IIIA) or (IIIB) are claimed. Ar-N=N-Phe-X-Phe-N=N-Ar (I) Ar-N=N-Phe-N(R)-X'-N(R')-Phe-N=N-Ar (II) H-Naphth-N=N-Phe'-N(R)-X'-N(R')-Phe'-N=N-Naphth-H (IIIA) H-Phe'-N=N-Naphth-N(R)-X'-N(R')-Naphth-N=N-Phe'-H (IIIB) Ar = 2-amino-8-hydroxy-6-sulpho-naphth-1-yl of formula (IV); Phe = optionally substituted phenylene of formula (V); X = an azo (N=N) or azoxy (N<+))=N) group; X' = 6-halo-1,3,5-triazin-2,4-di-yl of formula (VI); Naphth = optionally substituted naphthylene of formula (VII); Phe' = optionally substituted phenylene of formula (VIII); R1, R2 = 1-4 carbon (C) alkyl, 1-4 C alkoxy, 2-4 C alkanoylamino, ureido, halogen or sulpho; R, R' = H or optionally substituted 1-4 C alkyl; R9, R10 = 1-4 C alkyl, 1-4 C alkoxy, ureido, halogen, sulpho or a 2-4 C alkanoylamino or 1-4 C alkoxycarbonylamino group, in which the alkyl group may be substituted; and X1 = halogen.