Technology for preparing methyl hydrogen silicone oil

A methyl hydrogen-containing silicone oil and process technology, which is applied in the field of continuous production of methyl hydrogen-containing silicone oil by saturated acid hydrolysis, can solve the problems of high production energy consumption, unreachable, large water consumption, etc., and achieve reduction Production cost, reduced energy consumption, easy control effect

Active Publication Date: 2016-07-06
JIANGXI PINHAN CHEM IND CO LTD
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Problems solved by technology

[0002] The traditional production process of methyl hydrogen-containing silicone oil mainly includes solvent hydrolysis and azeotropic acid hydrolysis process. The solvent hydrolysis process is intermittent operation. Most of them use 120# gasoline as the solvent and excess water to mix and stir the methyl hydrogen dichlorosilane The mixture with trimethylchlorosilane is added dropwise to water with solvent gasoline for hydrolysis reaction. This reaction is a batch reaction, solvent gasoline is difficult to recover, and the water consumption is large. The large amount of heat released by the reaction needs to be transferred out with refrigerant, and the production energy consumption is high.
[0003] The azeotropic acid hydrolysis process is a con

Method used

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Embodiment Construction

[0013] The process for preparing methyl hydrogen-containing silicone oil of the present invention will be further described in detail below.

[0014] In the process for preparing methyl hydrogen-containing silicone oil of the present invention, methyl hydrogen-containing silicone oil is obtained through saturated acid hydrolysis → secondary hydrolysis → telomerization reaction → delowering reaction → decolorization reaction, and the specific steps are as follows:

[0015] 1. Saturated acid hydrolysis: Add 36% saturated hydrochloric acid to the hydrolysis reaction tower, put methylhydrogendichlorosilane and trimethylchlorosilane into the pre-mixing storage tank at a mass ratio of 100:5 to 100:10, and start stirring to let The two raw materials are fully mixed. After the mixing is completed, the mixed solution is flowed to the hydrolysis reaction tower at a volume flow rate of 400-700L / h for hydrolysis reaction. The hydrolysis temperature is controlled at 0-10°C. During the hydro...

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Abstract

The invention discloses a technology for preparing methyl hydrogen silicone oil.The methyl hydrogen silicone oil is prepared through saturated acid hydrolysis, secondary hydrolysis, telomerization reaction, devolatiligation reaction and decoloring reaction.According to the technology for preparing methyl hydrogen silicone oil, frozen saline water is not needed for cooling in the hydrolysis process, energy consumption is greatly reduced, production cost is reduced, HCl generated through the hydrolysis reaction overflows in a gas state mode, the concentration of prepared hydrochloric acid can be increased to be 31% or above, the standard of industrial hydrochloric acid of the state is achieved, selling is facilitated, and by means of the method, continuous production can be achieved, the productivity is high, and the middle process can be controlled easily.

Description

technical field [0001] The invention relates to a process for preparing methyl hydrogen-containing silicone oil, in particular to a production process for continuously producing methyl hydrogen-containing silicone oil by using a saturated acid hydrolysis method. technical background [0002] The traditional production process of methyl hydrogen-containing silicone oil mainly includes solvent hydrolysis and azeotropic acid hydrolysis process. The solvent hydrolysis process is intermittent operation. Most of them use 120# gasoline as the solvent and excess water to mix and stir the methyl hydrogen dichlorosilane The mixture with trimethylchlorosilane is added dropwise into water with solvent gasoline for hydrolysis reaction. This reaction is a batch reaction, solvent gasoline is difficult to recover, and the water consumption is large. A large amount of heat released by the reaction needs to be transferred out with a refrigerant, and the production energy consumption is high. ...

Claims

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Application Information

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IPC IPC(8): C08G77/12C08G77/06
CPCC08G77/06C08G77/12
Inventor 王群乐徐黎明
Owner JIANGXI PINHAN CHEM IND CO LTD
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