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Channelization continuous production process of polymethyltriethoxysilane

A technology of polymethyltriethoxysilane and monomethyltrichlorosilane, which is applied in chemical instruments and methods, chemical/physical processes, chemical/physical/physical-chemical processes, etc., can solve the problem of difficult prevention and control of material leakage, There are problems of explosion risk and high safety risk, so as to achieve the effect of improving production efficiency, uniform and stable product quality, and reducing safety risk

Active Publication Date: 2020-08-14
郑启波
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The safety risk of this production method is high. A large amount of monomethyltrichlorosilane required for each batch of reaction is injected into the reactor all at once, and there is a risk of explosion caused by static electricity; there is also a risk of material leakage when the equipment is damaged. Difficult to prevent and control; the reaction cycle is long, it takes more than 30 hours for a batch of materials, and the production efficiency is low

Method used

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  • Channelization continuous production process of polymethyltriethoxysilane
  • Channelization continuous production process of polymethyltriethoxysilane

Examples

Experimental program
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Effect test

Embodiment 1- Embodiment 5

[0037] Polymethyltriethoxysilane was prepared by using the above-mentioned pipelined continuous production process steps of polymethyltriethoxysilane, and the product yield is shown in Table 1.

[0038] Table 1:

[0039]

[0040] Ethanol and monomethyltrichlorosilane react instantaneously in reactor 1 of coil tube 4 to generate polymethyltriethoxysilane. Since the absolute amount of main raw materials used instantaneously is greatly reduced, safety risks are greatly reduced and production efficiency is greatly improved . The polymethyltriethoxysilane and hydrogen chloride gas generated by the reaction are separated through the gas-liquid separator 2, the hydrogen chloride gas escapes upwards, and the polymethyltriethoxysilane flows out from the bottom of the gas-liquid separator 2. The filler increases the resistance and plays the role of stirring ethanol and monomethyltrichlorosilane, so that the two can be fully mixed. Since hydrogen chloride gas is generated during the r...

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Abstract

The invention discloses a channelization continuous production process of polymethyltriethoxysilane. The process comprises the following steps of: respectively introducing ethanol and methyl trichlorosilane into a coil reactor through a specially-made coil reactor, quickly reacting to generate polymethyltriethoxysilane, simultaneously generating a hydrogen chloride gas, and separating through a gas-liquid separator to obtain polymethyltriethoxysilane. As the absolute amount of the main raw materials used instantaneously is greatly reduced, the safety risk is greatly reduced, and the productionefficiency is greatly improved. The whole production process does not need preheating, consumes short time and is safe, simple and efficient.

Description

technical field [0001] The invention belongs to the technical field of polymethyltriethoxysilane production, and in particular relates to a pipelined continuous production process of polymethyltriethoxysilane. Background technique [0002] Polymethyltriethoxysilane is used in the rubber and pharmaceutical industries, and is used as a raw material for organosilicon polymers. This product is an important raw material for the production of silicone resin, phenylmethyl silicone oil and waterproofing agent. At the same time, it is easy to hydrolyze and can form alkali metal silicon alkoxide with alkali metal hydroxide. And it can also be used as a crosslinking agent for room temperature vulcanized silicone rubber. [0003] The conventional method for synthesizing polymethyltriethoxysilane is to inject a measured amount of monomethyltrichlorosilane into the reaction kettle, raise the temperature to 60-90 degrees, and drop anhydrous ethanol, nitrogen bubbles into the reflux reac...

Claims

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Application Information

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IPC IPC(8): C08G77/06C08G77/34B01J19/18
CPCC08G77/06C08G77/34B01J19/1831B01J19/1862
Inventor 郑启波
Owner 郑启波
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