A kind of precursor of blue anthraquinone reactive disperse dye and preparation method thereof
A technology of reactive disperse dyes and precursors, applied in the preparation of anthracene dyes, organic compounds, organic dyes, etc., can solve the problems of unsatisfactory natural fiber dyeing, low manufacturing cost, and single structure, and achieve good application prospects and low manufacturing costs. Low, good dyeing quality
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Embodiment 1
[0024] In this embodiment, taking the reaction with ethylenediamine as an example, the structural formula of the product is:
[0025] ,
[0026] Among them, n=2.
[0027] The specific method is: take 0.24g of 1,4-dihydroxyanthraquinone and its leuco 1,4-diaminoanthraquinone 0.619g and 0.462ml of isobutanol in a three-necked flask, and simultaneously put 6.840mL of aniline and 1ml of ethyl Dissolve diamine in 15ml of 20% isobutanol solution, heat and stir at 60°C for 2 hours under nitrogen protection; heat for 2 hours and then raise the temperature to 108°C and boil at this temperature for 3 hours; cool down to 95°C and add catalyst copper acetate and piperidine , the molar ratio of 1,4-dihydroxyanthraquinone to copper acetate is 1:1.5, and an appropriate amount of piperidine is heated to 108°C for boiling for 3 hours; filled with oxygen for 3 hours; cooled to room temperature, and the reaction is complete. Using petroleum ether and dichloromethane (1:3, v / v) as eluents for...
Embodiment 2
[0031] In this example, 1,4-butylene diamine is used as a reactant to prepare a blue anthraquinone reactive disperse dye precursor. The specific steps are as follows:
[0032] Take 0.24g of 1,4-dihydroxyanthraquinone and its leuco 1,4-diaminoanthraquinone 0.619g and 0.462ml of isobutanol in a three-necked flask, and simultaneously put 6.840mL of aniline and 1.5ml of 1,4- Dissolve butanediamine in 15ml of 20% isobutanol solution, heat and stir at 60°C for 2 hours under nitrogen protection; heat for 2 hours and then raise the temperature to 108°C and boil at this temperature for 3 hours; cool down to 95°C and add copper acetate and piperidine Catalyst, the molar ratio of 1,4-dihydroxyanthraquinone to copper acetate is 1:3, appropriate amount of piperidine, the temperature is raised to 108°C and boiled for 3 hours; filled with oxygen for 3 hours; cooled to room temperature, the reaction is completed. Using petroleum ether and dichloromethane (1:3, v / v) as the eluent for chromatog...
Embodiment 3
[0036] In this example, the reaction with 1,6-hexanediamine is taken as an example to prepare the blue anthraquinone reactive disperse dye precursor. The specific steps are as follows:
[0037] Take 0.24g of 1,4-dihydroxyanthraquinone and its leuco 1,4-diaminoanthraquinone 0.619g and 0.462ml of isobutanol in a three-necked flask, and simultaneously put 6.840mL of aniline and 3.3 ml of 1,6- Dissolve hexamethylenediamine in 15ml of 20% isobutanol solution, heat and stir at 60°C for 2 hours under nitrogen protection; heat for 2 hours and then raise the temperature to 108°C and boil at this temperature for 3 hours; cool down to 95°C and add copper acetate and piperidine Catalyst, the molar ratio of 1,4-dihydroxyanthraquinone to copper acetate is 1:5, appropriate amount of piperidine, heat up to 108°C and boil for 3 hours; fill with oxygen for 3 hours; cool to room temperature, the reaction is complete. Using petroleum ether and dichloromethane (1:3, v / v) as the eluent for chromato...
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