High-temperature disperse brown dye compound and preparation method thereof
A technology of dye compound and disperse brown, which is applied in the direction of chemical instruments and methods, azo dyes, organic dyes, etc., can solve the problems of insufficient alkali resistance, high cost, and complicated preparation process, and achieve bright color, low production cost, The effect of high color strength
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[0047] Example 1
[0048] The aniline compound represented by formula (2)
[0049]
[0050] In the general formula:
[0051] R 1 Is hydrogen, C 1-6 Alkyl, halogen or nitro;
[0052] R 2 Is hydrogen, C 1-6 Alkyl, halogen or nitro;
[0053] R 3 Is hydrogen, C 1-6 Alkyl, halogen or nitro;
[0054] R 4 Is hydrogen, C 1-6 Alkyl, halogen or nitro;
[0055] That is to say, it has the definition of the above formula (1), and the diazonium salt is diazotized with nitrite in a hydrochloric medium, and the resulting diazonium salt is coupled with the basic compound represented by the formula (3).
[0056]
[0057] Where R 5 Is hydrogen, C 1-6 Alkyl, C 1-6 Hydroxyl, methoxypropyl, methoxyethoxypropyl, ethoxypropyl, n-propoxypropyl or isopropoxypropyl; also have the definition of the above general formula (1), press filter After separation by machine filtration, the monoeven disperse dye compound of the present invention represented by formula (1) is obtained.
[0058]
Example Embodiment
[0059] Example 2
[0060] Add 50 g of water, 15.8 g of sodium nitrite, and 24.2 g of 2,3-dimethylaniline to the simmered boil, which is represented by formula (2-1), stirred for 15 minutes, and set aside.
[0061]
[0062] Add 100g of water, 200g of crushed ice, 70.6g (31%) of hydrochloric acid to the flask, slowly add the above (2-1) mixture under stirring, keep the reaction for 1 hour after the addition, add 1g of sulfamic acid, and filter to obtain 2,3-Dimethylaniline diazonium salt.
[0063] Add 500g of water and 36g of N-H quinolinone to the flask as shown in formula (a),
[0064]
[0065] Add 30g (30%) of liquid caustic soda, stir to dissolve, add 200g of small ice cubes, add the above diazonium salt solution slowly, after adding, stir and react for 1.5 hours, heat to 80 degrees, keep for 1 hour, filter, and wash , The product is obtained as the following formula (1-1).
[0066]
Example Embodiment
[0067] Example 3
[0068] Add 50 g of water, 15.8 g of sodium nitrite, and 24.2 g of 2,3-dimethylaniline to the simmered boil, which is represented by formula (2-1), stirred for 15 minutes, and set aside.
[0069]
[0070] Add 100 g of water, 200 g of crushed ice, and 70 g (31%) of hydrochloric acid to the flask. Slowly add the above (2-1) mixture under stirring. After the addition, keep the reaction for 1 hour, add 1 g of sulfamic acid and filter to obtain 2 , 3-Dimethylaniline diazonium salt.
[0071] Add 500g of water and 38g of methylquinolinone to the flask as shown in formula (3-2),
[0072]
[0073] Add 30g (30%) of liquid caustic soda, stir to dissolve and add 200g of small ice cubes, add the above diazonium salt solution slowly, after adding, stir and react for 1.5 hours, heat to 75-80 degrees, keep it for 1 hour, filter , Washed with water to obtain the product, as shown in the following formula (b).
[0074]
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