| 摘要 |
PROBLEM TO BE SOLVED: To obtain a blue disperse dye mixture which is excellent in temp. dependence, pH dependence, lightfastness, and dyeing properties (build up properties) and has a high drying rate by compounding specified amts. of four azo dyes having structural formulas partly different from each other. SOLUTION: This dye mixture is prepd. by compounding 1.0 pt.wt. at least one dye represented by formula I (wherein X is Cl or Br; R<1> is a 1-5C alkyl; R<2> is a 1-4C alkyl; R<3> is a 1-5C alkyl or aryl; and are same, applied to formulas mentioned below), 0-0.2 pt.wt. at least one dye represented by formula II, 0.05-1.0 pt.wt. at least one dye represented by formula III, and 0.05-1.0 pt.wt. at least one dye represented by formula IV, can dye fiber products such as threads or knitted fabrics made from polyester fibers or a mixed-fiber product made from cotton fibers and polyester fibers, and is dispersed in an aq. medium by using a naphthalenesulfonic acid-formaldehyde condensate as the dispersant, thus giving a dyeing bath or a printing paste used for dip dyeing or textile printing.
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