| 摘要 |
The subject matter of the invention is trisazo dyestuffs, which in the form of the free acid correspond to general formula <IMAGE> wherein K1 denotes the radical of the 2,8-dihydroxynaphthalene-6-sulfonic acid (coupled in alkaline medium) or of the 2-amino-8-hydroxynaphthalene-6-sulfonic acid (coupled in acidic medium), K2 denotes the radical of a coupling component, R1 denotes hydrogen or methoxy, R2 denotes hydrogen or methyl and R3 denotes hydrogen or chlorine, with the proviso that the total number of sulfonic acid groups is 1 or 2.
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