| 摘要 |
Metallized disazo compounds containing a bridge member correspond to the formula.
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wherein each of the radicals R1 to R4, independently, is H, halogen, NO2, C1-4 alkyl, C1-4 alkoxy, -NHCOR8, -COX or SO2Z,
R8 is C1-4 alkyl or phenyl,
X is OH, C1-4 alkoxy, optionally substituted phenyl, phenoxy or cyclohexyl, or an unsubstituted or substituted amine radical,
Z has one of the significances of X or is -CH2CH2OSO3H or -CH=CH2,
R5 is H or optionally substituted C1-4 alkyl,
R7 is H or halogen and
R6 is halogen, OH, C1-4 alkoxy, phenoxy or an unsubstituted or substituted amine radical,
which compounds are in free acid or salt form and are useful for dyeing and printing hydroxy group- or nitrogen-containing organic substrates, especially paper, leather or cellulosic textile material.
<??>The fastness properties of the obtained dyeings and prints on textile material comprising cellulose fibers may be further improved by after-treating the dyed or printed substrate with a special fixing agent.
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