To obtain a reactive dye which gives strong dyeing while using a very small amount of a salt or without using a salt at all by mixing at least two kinds of dyes selected from specific kinds of disazo dyes.
At least two kinds of dyes selected from three kinds of dyes represented by formulas I, II, and III are mixed. In the formulas, D1 is a benzene or naphthalene ring having at least one sulfo group; R1 is methyl or amino; R2 is H or Cl; Hal is F or Cl; M is H or an alkali metal; D2 to D4 are each a group represented by formula IV; R3 and R4 are each H, methyl, ethyl, methoxy, ethoxy, sulfo, or carboxy; Z is CH=CH2 or CH2CH2Z1; and Z1 is an alkali-separable group, In the case of a mixture of two kinds of dyes, i.e., in the case of a mixture containing dyes of formulas I and II, or dyes of formulas II and III, or dyes of formulas I and III, at least one dye per each respective kind is incoporated, and the content of each kind of dyes in the mixture is 10-90 wt.%, preferably 30-70 wt.%.
REIHER UWE
SCHUMACHER CHRISTIAN DR
EICHHORN JOACHIM
KUNZ MARTIN
| JPS4930502B1 | 1974-08-13 | |||
| JPS62161859A | 1987-07-17 |
| WO1998042785A1 | 1998-10-01 |
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