| 摘要 |
1. A 1 : 2 chromium complex dye of the formula I see diagramm : EP0148121,P29,F2 which has 2 to 7 groups of the formula -SO3 (cation) Ka (anion), and wherein A is the radical of a diazo component of the benzene or naphthalene series, which carries the hydroxyl or carboxyl group in the o-position with respect to the azo group, B is the radical of a coupling component which carries the group X in the position adjacent to the azo group, X is oxygen, or a radical of the formula -NR-, in which R is hydrogen or C1 -C4 alkyl, Ar is an unsubstituted or substituted aryl radical which carries at least two sulfo groups, m is 0 or 1 and Ka (anion) is a cation, where the ring D can carry further substituents, with the proviso that a nitro group is not situated in the 5-position of the 1-hydroxy-2-aminobenzene radical D. |
