Synthesis method of hydroxyl silicone oil
A synthesis method and technology of hydroxy silicone oil, applied in the field of hydroxy silicone oil synthesis, can solve the problems of easily limited raw materials, high cost, unenvironmental protection and the like, and achieve the effects of easy control, simple process and low process cost
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[0024] A kind of synthetic method of hydroxy silicone oil of the present invention, described synthetic method comprises the steps:
[0025] 1) Add 60-90 parts by weight of hexamethylcyclotrisiloxane, 10-40 parts by weight of end-capping agent, 30-60 parts by weight of solvent and 0.01-0.5 parts by weight of catalyst into the reactor, and heat up to The solvent boils, and reacts for 1 to 5 hours at the boiling point of the solvent, and waits until all reactions are complete;
[0026] 2) Add a neutralizing agent to neutralize to a pH value of 6-8, extract the solvent, end-capping agent and unreacted hexamethylcyclotrisiloxane under a vacuum of <1000 Pa to obtain a crude product, and then filter out the crude product salt in the product to obtain the finished product of hydroxy silicone oil;
[0027] 3) The solvent, end-capping agent and unreacted hexamethylcyclotrisiloxane extracted in step 2) are analyzed by gas chromatography to obtain the ratio of each component, and then a...
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