Bisphenol A salt preparation method

[0031] Accurately weigh 22.83g of bisphenol A and 5g of sodium hydroxide solid, put them into an ultrafine pulverizer and pulverize to obtain a mixture powder with a particle size of 2500 mesh. Put the resulting mixture into a round-bottomed flask connected with an air inlet conduit, a gas moisture tester, an anchored stirring paddle, and a vacuum pump, and simultaneously feed argon gas at a rate of 1.5 L / min. ℃. The round-bottomed flask was heated to 180° C. through a salt bath, and the stirring was started to 60 rpm. When no moisture content is detected at the gas outlet, close the inlet valve and increase the temperature to 250°C. At the same time, turn on the vacuum pump until the vacuum degree is -0.05MPa, and stop heating after 1 hour of vacuum distillation. Finally, 16.47 g of bisphenol A sodium salt solid was obtained, with a yield of 96.75% (based on sodium hydroxide). Elemental analysis test shows that the content of sodium element is 16.74% (theoretical value is 16

[0033] 228.3g of bisphenol A and 31.92g of lithium hydroxide were put into an ultrafine pulverizer, and were thoroughly pulverized to obtain an ultrafine mixture powder with a particle size of 3500 mesh. Add the mixed powder into the reactor, which is connected with an air inlet duct, a gas moisture tester, an anchor stirring paddle and a vacuum pump, and the reactor is fed with nitrogen in advance to exhaust the air. The temperature of the reaction kettle was gradually raised to 160° C., and the stirring speed was set at 50 rpm. After starting the reaction, pass the nitrogen gas heated to 160°C by the air heater into the reaction kettle at a flow rate of 0.5L / min, and monitor the moisture in the discharged nitrogen gas with a gas moisture tester, and stop when no moisture is produced. reaction. Close the inlet valve, raise the temperature of the kettle to 220° C., and turn on the vacuum pump to a vacuum degree of -0.1 MPa, and distill the excess bisphenol A under reduced pres

[0035] Grind 42.53g of potassium carbonate flaky solid into coarse particles, then mix with 91.32g of bisphenol A particles, put them into an ultrafine pulverizer for further pulverization and mixing, and finally obtain an ultrafine powder with a particle size of 3000 mesh. Then pour the pulverized mixture into the stainless steel reactor that has been installed with an air inlet duct, a gas moisture tester, an anchor paddle and a vacuum pump in advance, and the reactor is protected by carbon dioxide through the air inlet pipe. The reactor was heated to 170° C., the stirring speed was 100 rpm, and carbon dioxide gas previously heated to 170° C. by an air heater was passed into the reactor at a flow rate of 2 L / min. As the reaction progresses, the moisture content is monitored through a gas moisture tester connected to the gas outlet until no more moisture is produced to stop the reaction and close the inlet valve. Continue to raise the temperature of the reactor to 230°C, turn