Orange to red disperse dye compound, dye composite and preparation method and application thereof

[0058] The preparation method of the disperse dye composition comprises the following steps: the disperse dye compound, the dispersant and water are sand-milled and spray-dried to prepare the disperse dye composition.

[0059] The brown, dark blue and black disperse dye composition containing the dye compound, the composition also includes disperse blue.

[0060] The application of the brown, dark blue and black dye disperse dye composition in 185-195 DEG C low-temperature heat-melt dyeing.

[0061] The commercial processing of described disperse dye composition, preferred dispersant is selected from the one in dispersant NNO, dispersant MF, dispersant CNF, dispersant CS, dispersant Reax85A, sodium lignosulfonate, dispersant M-9 Or a mixture of several, dye compound, dispersant and water, after sanding and spray drying, commercial dyes are obtained. The application of the disperse dye compound or the disperse dye composition in low-temperature heat-melt dyeing at 185-195°C.

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[0064] The structural formula of the dye compound provided by the present embodiment is as follows:

[0065]

[0066] In a 500 ml four-neck flask, add 100 ml of water, 30 ml of hydrochloric acid, 13.8 g of p-nitroaniline (100%), heat up at 60°C, p-nitroaniline is completely dissolved, add crushed ice to cool down to below 0°C, Add 7.1 g of sodium nitrite aqueous solution, keep the temperature for reaction for 2 hours, then add 0.5 g of sulfamic acid, stir for 15 minutes to obtain diazonium salt solution.

[0067] Add 200 ml of water, 5 ml of sulfuric acid and 0.5 g of emulsifier into a 2000 ml beaker. Stir for 10 minutes, add 24 grams of N-cyanoethyl-N-(2-hydroxy-3-chloropropyl) aniline, after the coupling components are completely dissolved, add ice and cool down to 0 degrees, and then add nitrogen solution for coupling, until the diazonium salt disappears.

[0068] Raise the temperature to 45°C, keep the temperature for reaction for 2 hours, filter and wash with water to o

[0070] The structural formula of the dye compound provided by the present embodiment is as follows:

[0071]

[0072] Into a 500 ml four-neck flask, add 130 ml of water, 42 ml of hydrochloric acid, 17.3 g of o-chloro-p-nitroaniline (100%), heat up to 70-75 ° C, keep stirring for 2 hours, add crushed ice to cool down to 0 ° C Next, add 7.2 grams of sodium nitrite aqueous solution, keep warm for 2 hours, then add 0.8 grams of sulfamic acid, and stir for 15 minutes to obtain a diazonium salt solution.

[0073] Add 250 ml of water, 5 ml of sulfuric acid and 0.5 g of emulsifier into a 2000 ml beaker. Stir for 10 minutes, add 24 grams of N-cyanoethyl-N-(2-hydroxy-3-chloropropyl) m-toluidine, after the coupling components are completely dissolved, add ice to cool down to 0 degrees, and add nitrogen solution to carry out Couple until the diazonium salt disappears.

[0074] Raise the temperature to 45°C, heat and stir for 2 hours, filter and wash with water to obtain the filter cake