Sulfonamide blue disperse dye and preparation method thereof
A technology of disperse dyes and sulfonamides, applied in organic dyes, azo dyes, chemical instruments and methods, etc., can solve the problems of van der Waals force and hydrogen bond force, high dye uptake rate, poor color fastness, etc., and achieve affinity Excellent adjustability, improved affinity, improved oxidation resistance and thermal stability
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Embodiment 1
[0028] Embodiment 1, a kind of preparation method of sulfonamide blue disperse dye, carries out following steps successively:
[0029] 1) In a three-neck flask equipped with a stirrer and a thermometer, first add 0.01mol of Indigoidine dye and 10mL of DMF, heat to 60°C to dissolve, and set aside;
[0030] 2) Add a mixed solution of 0.02mol benzenesulfonyl chloride and 30ml DMF to the dye solution, then add 0.04mol potassium carbonate as an acid-binding agent, and react for 6hr at room temperature;
[0031] 3), after the completion of the reaction, steam the DMF solvent at 90°C under reduced pressure (pressure of -0.09MPa) to obtain a residue; the residue is pickled successively (with a concentration of 5% aqueous hydrochloric acid for pickling, each Amount of 50ml, a total of 3 times of acid washing), washing (each consumption is 50ml, a total of 3 times of water washing) and drying (dried to constant weight at 50 ℃), to obtain sulfonamide blue disperse dye.
[0032] The stru...
Embodiment 2
[0036] Embodiment 2, a kind of preparation method of sulfonamide blue disperse dye, carry out following steps successively:
[0037] 1) In a three-neck flask equipped with a stirrer and a thermometer, first add 0.01mol of Indigoidine dye and 10mL of DMF, heat to 60°C to dissolve, and set aside;
[0038] 2) Add a mixed solution of 0.02mol p-toluenesulfonyl chloride and 30ml DMF to the above dye solution, then add 0.04mol potassium carbonate as an acid-binding agent, and react at room temperature for 0.5hr;
[0039] 3) After the reaction, the DMF solvent was evaporated under reduced pressure at 90° C. to obtain a residue; the residue was sequentially acid-washed, washed with water and dried to obtain a sulfonamide blue disperse dye.
[0040] The structural formula of this sulfonamide blue disperse dye is as follows:
[0041]
[0042] That is, with respect to the general structural formula above, in the formula: R is CH 3 , located at the para-position of the sulfone group. ...
Embodiment 3
[0044] Embodiment 3, a kind of preparation method of sulfonamide blue disperse dye, carry out following steps successively:
[0045]1) In a three-neck flask equipped with a stirrer and a thermometer, first add 0.01mol of Indigoidine dye and 10mL of DMF, heat to 60°C to dissolve, and set aside;
[0046] 2) Add a mixed solution of 0.02mol m-toluenesulfonyl chloride and 30ml DMF to the above dye solution, then add 0.04mol potassium carbonate as an acid-binding agent, and react at room temperature for 0.5hr;
[0047] 3) After the reaction, the DMF solvent was evaporated under reduced pressure at 90° C. to obtain a residue; the residue was sequentially acid-washed, washed with water and dried to obtain a sulfonamide blue disperse dye.
[0048] The structural formula of this sulfonamide blue disperse dye is as follows:
[0049]
[0050] That is, with respect to the general structural formula above, in the formula: R is CH 3 , at the meta-position of the sulfone group.
[0051]...
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