| 摘要 |
NEW MATERIAL:A compound expressed by formula I (M is H or equivalent metal; R<1> is H, methyl or ethyl; R<2> and R<3> are H, sulfonic acid, 1-2C alkyl or 1-3C alkoxy). EXAMPLE:The compound expressed by formula II. USE:A dye for dyeing cellulosic fibers to blue color capable of dyeing the fibers under the same pH and dyeing conditions as in dyeing polyester fibers. PREPARATION:Fro example, 1mol compound expressed by formula III (X is Cl or F) is condensed with 1mol compound expressed by formula IV and the resultant compound is then condensed with 1mol compound expressed by formula V.
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