| 摘要 |
Disclosed are chrome complex dyes of the formula <IMAGE> and of the formula <IMAGE> wherein Z and Z' independently of one another are each nitrogen or -CH-; X and X' independently of one another are each oxygen, or a group of the formula -NR-, in which R is hydrogen or C1-C4-alkyl, provided X is oxygen when Z is -CH- and provided X' is oxygen when Z' is -CH-; A and B independently of one another are each a diazo component of a benzene or naphthalene radical which carries the hydroxyl or carboxyl group in the o-position with respect to the azo group; C and D independently of one another are each a benzene or naphthalene radical which carries in the o-position with respect to the azo or azomethine group a hydroxyl or carboxyl group, or the radical of an aliphatic or cycloaliphatic aminocarboxylic acid, if n2 or n3 is 1 and Z or Z' is CH; E and F independently of one another are each the radical of a coupling component when Z or Z' is nitrogen, the coupling component containing in the o- and -positions with respect to the azo group the groups X and X', respectively, or the radical of an o- hydroxyaldehyde when Z or Z' is -CH-; n, n1, n2 and n3 independently of one another are each zero or 1; Ka(+) is a cation; and G is an unsubstituted or substituted benzene or naphthalene radical which contains the OH group in the o-position with respect to the coupling position on the group G; and K is the C1-C4-alkyl group or a -COOR or the <IMAGE> group, in which R is hydrogen or C1-C4-alkyl.
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