Beta-diketone organotin PVC heat stabilizer and preparation method thereof
A heat stabilizer and diketone technology, which is applied in the field of β-diketone organotin PVC heat stabilizer and its preparation, can solve the problems of inconvenience in transportation and storage, and achieve convenient storage, convenient use, and promotion of analysis. crystal effect
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Embodiment 1
[0020] Introduce nitrogen into the ultrasonic reaction vessel equipped with a stirring device, then add 300 mL of dichloromethane solution dissolved in 22.5 g (0.1 mol) of 1,3-diphenyl-1,3-propanedione, and then add 100 mL of ammonia water , slowly add 300 mL of methanol solution containing 22.5 g (0.1 mol) of stannous chloride dihydrate dropwise into the ultrasonic reaction vessel at a reaction temperature of 25 ° C, and turn on the stirring device and the ultrasonic generating device during the dropping process, and the ultrasonic generating device The set frequency is 20KHz. After the dropwise addition, the solution is in a clear state at this time. Stop stirring, keep the ultrasonic generating device to continue to work, slowly cool down to 0°C, and the reaction liquid is still. Open the vent hole on the ultrasonic reaction container and keep The nitrogen gas introduced is discharged from the exhaust hole, so that the nitrogen gas is discharged out of the ultrasonic reactio...
Embodiment 2
[0022] Introduce nitrogen into the ultrasonic reaction vessel equipped with a stirring device, then add 300 mL of dichloromethane solution dissolved in 22.5 g (0.1 mol) of 1,3-diphenyl-1,3-propanedione, and then add 100 mL of ammonia water , slowly add 300 mL of methanol solution containing 12 g (0.05 mol) of stannous chloride dihydrate dropwise into the ultrasonic reaction vessel at a reaction temperature of 0°C, and turn on the stirring device and the ultrasonic generating device during the dropping process. Set the frequency to 100KHz. After the dropwise addition, the solution is in a clear state at this time. Stop stirring, keep the ultrasonic generating device to continue to work, slowly cool down to 0°C, and the reaction liquid is still. Open the vent hole on the ultrasonic reaction container and keep the ventilation The incoming nitrogen gas is discharged from the exhaust hole, so that the nitrogen gas is discharged out of the ultrasonic reaction vessel along with a cert...
Embodiment 3
[0024] Introduce nitrogen into the ultrasonic reaction vessel equipped with a stirring device, then add 300 mL of dichloromethane solution dissolved in 22.5 g (0.1 mol) of 1,3-diphenyl-1,3-propanedione, and then add 100 mL of ammonia water , slowly add 300 mL of methanol solution containing 16 g (0.066 mol) of stannous chloride dihydrate dropwise into the ultrasonic reaction vessel at a reaction temperature of 50° C. During the dropping process, the stirring device and the ultrasonic generating device are turned on, and the ultrasonic generating device Set the frequency to 80KHz. After the dropwise addition, the solution is in a clear state at this time. Stop stirring, keep the ultrasonic generating device to continue to work, slowly cool down to 0°C, and the reaction liquid is still. Open the vent hole on the ultrasonic reaction container and keep the ventilation. The incoming nitrogen gas is discharged from the exhaust hole, so that the nitrogen gas is discharged out of the u...
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