A polymer oil-absorbing material and its preparation method
A technology of oil-absorbing materials and polymers, which is applied in the field of polymer oil-absorbing materials and their preparation, can solve the problems of complex preparation process, unfavorable product promotion and application of industrial scale-up products, and high cost, and achieve simple process and low requirements for equipment and reaction conditions , the effect of large oil absorption
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Embodiment 1
[0027] Preparation method of polymer oil absorbing material, including steps:
[0028]Step S1, poly 1-p-Toluenesulfonyl-2,5-pyrrolidine dimethal 2,3-difluorofunamate: 1-p-toluenesulfonyl-2,5-pyrrolidine dimethalol 18.8g , 2,3-difluorofumin acid 10g, tetrabutyl titanate, tetrachloride 1 g added to dimethyl sulfoxide 90g, stirred for 20 minutes, resulting in a reaction solution, then transfer the reaction solution to a high pressure reaction In the kettle, the air was placed in nitrogen, and then the esterification reaction was carried out at a temperature of 230 ° C, the pressure pressure was 30 kPa, and the esterification was completed, and the pressure was completed to normal pressure; then in vacuum conditions, the temperature was controlled at 240. When the reaction was stirred at ° C, the reaction was stirred at the end of the reaction, and the liquid was taken out and the mass fraction was 0.5% aqueous sodium hydroxide solution, and then the sinking of the sketch was washed 3...
Embodiment 2
[0034] Preparation method of polymer oil absorbing material, including steps:
[0035] Step S1, poly 1-p-Toluenesulfonyl-2,5-pyrrolidine dimethal 2,3-difluorofunamate: 1-p-toluenesulfonyl-2,5-pyrrolidine dimethalol 18.8g , 2,3-difluorofumin acid 10 g, titanium dioxide 4.5 g, L, 4-naphthoquinone 1 g addition to N, N-dimethylformamide 110g, stirred for 23 minutes, resulting in the reaction solution, then the reaction solution Transfer to the high pressure reactor, the air is placed in the air, and then the esterification reaction is performed at a temperature of 250 ° C, the pressure pressure is 50 kPa, and the esterification is ended, and the pressure is completed to the normal pressure; then under vacuum conditions. However, the control temperature is between 250 ° C, stirred at a stirred reaction, and then cool to room temperature after the reaction, exit and deposit in aqueous sodium hydroxide solution in a mass fraction, then washed with ethanol 4 times, then Ethanol was evapor...
Embodiment 3
[0041] Preparation method of polymer oil absorbing material, including steps:
[0042] Step S1, poly 1-p-Toluenesulfonyl-2,5-pyrrolidine dimethal 2,3-difluorofunamate: 1-p-toluenesulfonyl-2,5-pyrrolidine dimethalol 18.8g 10 g of 2,3-difluoromaic acid, 5 g of titanium tide, tetrachloroquinone 1 g is added to N, N-dimethylacetamide 125g, stirred for 25 minutes, resulting in reaction solution, then transfer the reaction solution In the high pressure reactor, the air is placed in the air, then the esterification reaction is carried out at a temperature of 260 ° C, the pressure pressure 70 kPa, and the esterification, pressure is completed to normal pressure; then in vacuum conditions, The control temperature is between 255 ° C, stirred for 15h, and then cool to room temperature after the reaction is completed, exit and sink in aqueous sodium hydroxide solution in a mass fraction, and then washed with ethanol 5 times, and then Ethanol is evaporated to give poly 1-p-p-toluenesulfonyl-2,...
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