Method for preparing high boiling silicone oil by using organic silicon high boiling substances
A high-boiling silicone oil and high-boiling technology, applied in the field of organosilicon high-boiling to produce high-boiling silicone oil, can solve the problems of increased chlorine content, uncontrollable viscosity and high cost in the product, and achieve extended storage time, stable quality, The effect of reducing chlorine content
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[0028] Example 1: A method for preparing high-boiling silicone oil using organosilicon high-boiling substances, the steps are as follows:
[0029] Pump 100 parts of silicone high-boiling substance into the enamel kettle, start stirring at room temperature, add dropwise a mixed solution of 55 parts of ethanol and 3 parts of water to the silicone high-boiling substance, and add dropwise to half of the total mixed solution When the temperature was started, the temperature rose to 70°C when the dripping was completed, and the temperature was continued to rise to 80°C and refluxed for 2 hours, and then nitrogen was purged at 60°C for 1 hour to obtain acid silicone oil. The hydrogen chloride gas produced in the dripping process is sent to the spray tower through a fan for recovery.
[0030] At a constant temperature of 45°C, add 30 parts of urea from the hand hole of the reactor, then add 3 parts of zinc oxide, and finally add 20 parts of ammonium bicarbonate for neutralization. Ammoniu...
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