DETAILED DESCRIPTION What is claimed is: 1.
A reactive dye of the formula ##STR5## wherein K is a naphtholsulfonic acid or N-acylated aminonaphtholsulfonic acid, n is 1, or 2, and ring A may contain further substituents.
2.
A reactive dye of claim 1, wherein K is a hydroxynaphthalenedisulfonic acid or of an N-acylated aminohydroxynaphthalene-mono- or -disulfonic acid.
3.
A reactive dye of claim 2, wherein K is an N-acylated 1-amino-8-hydroxynaphthalene-3,6- or -4,6-disulfonic acid.
4.
A reactive dye of claim 3, wherein n is 1 and ring A does not contain further substituents.
5.
The reactive dye of claim 4 of the formula ##STR6## 6.
A reactive dye of claim 1, as a lithium salt or a mixture of a lithium salt with another alkali metal salt.
7.
A process for the preparation of a reactive dye of claim 1, which comprises diazotising, coupling and condensing, in suitable order, 2-naphthylamine-1-sulfonic acid, 2,4,6-trifluoro-s-triazine, a phenylenediaminesulfonic acid and a coupling component of the naphtholsulfonic acid or N-acylated aminonaphtholsulfonic acid series.
8.
A process of claim 7, wherein the condensation reactions and, if desired, the coupling, are carried out in the presence of at least the equimolar amount of a basic lithium compound.
9.
A process of claim 8, wherein the lithium compound is lithium carbonate, lithium hydrogen carbonate or lithium hydroxide.
10.
A process of claim 9 for the preparation of a reactive dye of claim 5, which comprises condensing 2-napththylamine-1-sulfonic acid with 2,4,6-trifluoro-s-triazine in the presence of lithium hydroxide, condensing the primary condensation product with 1,3-diaminobenzene-4-sulfonic acid in the presence of lithium hydroxide, diazotising the secondary condensation product, and coupling to 1-benzoylamino-8-hydroxynaphthalene-3,6-disulfonic acid in the presence of lithium hydroxide or sodium hydroxide.
11.
A process for dyeing or printing cellulosic fibre material which comprises the step of applying to said material a reactive dye, or a salt thereof, of claim 1
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