| 摘要 |
1490842 Water soluble anthraquinone dyestuff BAYER AG 26 Feb 1976 [27 Feb 1975] 07637/76 Heading C4P The invention comprises the water soluble dyestuff having the formula which is prepared by reacting 1-amino-4-bromoanthra-quinone-2-sulphonic acid with 2-methyl 4-tert-butylaniline in aqueous or aqueous alcoholic solution in presence of a copper catalyst, e.g. Cu(I) chloride. The dye dyes natural and synthetic nitrogen containing textile materials blue.
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