| 摘要 |
Water-soluble dis-azo dye stuff(I), used as a black reactive dye, is prepared from 4-acetyl amino phenyl-β-hydroxy ethyl sulfone by adding 98% conc. H2SO4 and 30% oleum, neutralizing the soln. with Na2CO3, adding NaNO2, coupling with 1-amino-8-naphthol -3,6-disulfonic acid, neutralizing with Na2CO3, and spray drying. In the process, X equals -SO2CH2CH2OSO3H.
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