A kind of bola-type surfactant with self-demulsification ability and its preparation method and application
A technology of surfactant and capacity, applied in the field of Bola type surfactant and its preparation, can solve the problem of insignificant effect, etc., and achieve the effects of easy availability of raw materials, strong emulsifying ability, and reducing the viscosity of heavy oil
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Embodiment 1
[0037] (1) Add 1,12-diaminododecane (20.0g, 0.1mol) and cyclobut-3-ene dicarboxylic anhydride (49.6g, 0.4mol) dropwise in a 250mL three-necked flask equipped with a reflux condenser , blowing nitrogen three times, and then heated to 180° C. for 3 h, and TLC (Thin Layer Chromatography, thin layer chromatography) monitored the completion of the reaction. After the reaction was completed, it was cooled to room temperature, 50 mL of distilled water was added, extracted three times with 80 mL of ethyl acetate, dried over anhydrous magnesium sulfate, filtered, concentrated under reduced pressure to obtain a crude product, and finally separated by a column to obtain a colorless oily imide.
[0038] (2) Add imide and 80mL distilled water into a 250mL three-neck flask, place in an ice-salt bath and cool to 0°C, slowly add potassium permanganate KMnO 4 (40g, the addition time is 40min), after all the addition is completed, the temperature is slowly raised to 90°C for 12h. Add 80 mL of ...
Embodiment 2
[0041] (1) Add 1,12-diaminododecane (20.0g, 0.1mol) and cyclobut-3-ene dicarboxylic anhydride (49.6g, 0.4mol) dropwise in a 250mL three-necked flask equipped with a reflux condenser , blowing nitrogen for 3 times, and then heated to 150° C. for 2 h, and TLC (Thin Layer Chromatography, thin layer chromatography) monitored the completion of the reaction. After the reaction was completed, it was cooled to room temperature, 50 mL of distilled water was added, extracted three times with 80 mL of ethyl acetate, dried over anhydrous magnesium sulfate, filtered, concentrated under reduced pressure to obtain a crude product, and finally separated by a column to obtain a colorless oily imide.
[0042] (2) Add imide and 80mL distilled water into a 250mL three-neck flask, place in an ice-salt bath and cool to 0°C, slowly add potassium permanganate KMnO 4 (31.6g, the addition time is 40min), and after all the addition is completed, the temperature is slowly raised to 100°C for 10h. Add 80...
Embodiment 3
[0045](1) Add 1,12-diaminododecane (20.0g, 0.1mol) and cyclobut-3-ene dicarboxylic anhydride (49.6g, 0.4mol) dropwise in a 250mL three-necked flask equipped with a reflux condenser , blowing nitrogen three times, and then heated to 200° C. for 5 h, and TLC (Thin Layer Chromatography, thin layer chromatography) monitored the completion of the reaction. After the reaction was completed, it was cooled to room temperature, 50 mL of distilled water was added, extracted three times with 80 mL of ethyl acetate, dried over anhydrous magnesium sulfate, filtered, concentrated under reduced pressure to obtain a crude product, and finally separated by a column to obtain a colorless oily imide.
[0046] (2) Add imide and 80mL distilled water into a 250mL three-neck flask, place in an ice-salt bath and cool to 0°C, slowly add potassium permanganate KMnO 4 (50g, the addition time is 40min), after all the addition is completed, the temperature is slowly raised to 90°C for 12h. Add 80 mL of s...
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