A process for continuously producing various low-viscosity methyl silicone oils by comprehensively utilizing methyl silicone oil polymer materials
A technology of methyl silicone oil and process, applied in the field of methyl silicone oil production, can solve the problem of high overall energy consumption, achieve low energy consumption, high comprehensive utilization rate, and reduce system energy consumption
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Embodiment 1
[0093] MM and DMC are mixed evenly according to the mass ratio of 2:1, and the mixture is pumped into the acid resin fixed bed reactor, the reaction temperature is controlled at 70°C, and the fixed bed passes through the fixed bed at a certain flow rate, and the acid resin is catalyzed when passing through the fixed bed. Perform an equilibrium reaction, control the reaction time by controlling the flow rate, and the reaction residence time is 1 hour. Synthesize methyl silicone oil polymer materials containing MDM, MD2M, MD3M, MD4M and higher boiling point components. The proportions are: MDM 21.69 %, MD2M 12.10%, MD3M 11.92%, MD4M and higher boiling point components about 17%. The contents of D4, D5, and D6 were 0.87%, 0.07%, and undetected, respectively. The gas chromatographic detection results of the product are shown in figure 2 .
[0094] The obtained methyl silicone oil polymer material is subjected to rectification and separation and purification:
[0095] The press...
Embodiment 2
[0101] Mix MM and DMC evenly according to the mass ratio of 1:3, pump the mixture into the acid resin fixed bed reactor, control the reaction temperature at 70°C, pass through the fixed bed at a certain flow rate, and pass through the fixed bed under the catalysis of the acid resin Equilibrium reaction is carried out, the reaction time is controlled by controlling the flow rate, the reaction residence time is 1 hour, and the methyl silicone oil polymer material containing MDM, MD2M, MD3M, MD4M and higher boiling point components is synthesized, and the proportion of methyl silicone oil is respectively : MDM 8.07%, MD2M 9.88%, MD3M 10.36%, MD4M and higher boiling point components about 60%. The contents of D4, D5 and D6 are 3.60%, 2.34% and 0.99% respectively. The gas chromatographic detection results of the product are shown in image 3 .
[0102] The obtained methyl silicone oil polymer material is subjected to rectification and separation and purification:
[0103] The pr...
Embodiment 3
[0109] Mix MM and DMC evenly at a mass ratio of 1:4, pump the mixture into the acid resin fixed bed reactor, control the reaction temperature at 70°C, pass through the fixed bed at a certain flow rate, and pass through the fixed bed under the catalysis of the acid resin Equilibrium reaction is carried out, the reaction time is controlled by controlling the flow rate, the reaction residence time is 1 hour, and the methyl silicone oil polymer material containing MDM, MD2M, MD3M, MD4M and higher boiling point components is synthesized, and the proportion of methyl silicone oil is respectively : MDM 5.78%, MD2M 6.87%, MD3M 7.48%, MD4M and higher boiling point components about 65%. The contents of D4, D5 and D6 are 5.89%, 4.32% and 1.19% respectively. The gas chromatographic detection results of the product are shown in Figure 4 .
[0110] The obtained methyl silicone oil polymer material is subjected to rectification and separation and purification:
[0111] The pressure of th...
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