Disperse black azo dye mixture as well as preparation method and application thereof
A dye mixture, azo dye technology, applied in dyeing methods, organic dyes, textiles and paper making, etc., can solve the problems of serious white background staining, poor fastness, deep dyeing of disperse black dyes, insufficient lifting power, etc. Achieve the effect of good dispersion, excellent levelness and excellent sublimation fastness
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Embodiment 1
[0030] Based on the total mass of the disperse black azo dye mixture, each component is weighed according to the ratio of 20% component A, 45% component B, 23% component C and 12% dispersant, wherein component A is The compound shown in structural formula (Ia), component B is the compound shown in structural formula (IIa), component C is the compound shown in structural formula (III), and the dispersant is sodium methylnaphthalenesulfonate formaldehyde condensate It is compounded with sodium lignosulfonate at a mass ratio of 3:7. Mix the above components evenly and then add water for grinding. The slurry obtained by grinding is spray-dried. The spray-drying process conditions are: inlet temperature 120°C, The outlet temperature is 50°C, and after drying, a dye mixture with a particle size of 1 μm is obtained.
[0031]
[0032]
Embodiment 2
[0034] Compared with Example 1, this example differs in that component A is composed of compounds shown in structural formula (Ia) and structural formula (Ib) at a mass ratio of 2:3, and component B is composed of compounds such as structural formula Compounds represented by (IIa) and structural formula (IIb) are compounded at a mass ratio of 1:1, and the dispersant is formed by compounding sodium methylnaphthalene sulfonate formaldehyde condensate and sodium lignosulfonate at a mass ratio of 4:6. , and the rest are exactly the same, so I won’t repeat them here.
[0035]
[0036]
Embodiment 3
[0038] Compared with Example 1, this example is different in that: Component A is composed of compounds shown in structural formula (Ia), structural formula (Ib) and structural formula (Ic) in a mass ratio of 1:2:1 , Component B is composed of compounds shown in structural formula (IIa), structural formula (IIb) and structural formula (IIc) at a mass ratio of 3:2:7, and the dispersant is composed of sodium methylnaphthalenesulfonate formaldehyde condensate and Sodium lignosulfonate is compounded at a mass ratio of 3:5, and the rest are identical and will not be repeated here.
[0039]
[0040]
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