Preparation method of tetravinylsilane

A technology of tetravinylsilane and vinyl chloride, applied in the field of preparation of tetravinylsilane, can solve the problems of insufficient environmental protection, complicated use of raw materials, poor controllability, etc., and achieves easy expansion of production, single raw material, and few post-processing steps. Effect

Pending Publication Date: 2020-09-29
苏州矽索新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] But the preparation method of the tetravinylsilane of the applied application of application at present still has some shortcomings, as: one, poor controllability during reaction; By-products, environmental protection is not good enough; 4. The process is relatively complicated and requires post-processing steps

Method used

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  • Preparation method of tetravinylsilane

Examples

Experimental program
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Effect test

Embodiment 1

[0027] refer to figure 1 , a preparation method of tetravinylsilane, specifically comprising the following steps:

[0028] S1. Select raw materials: select the following weight components for later use: 280 parts of vinyl chloride, 1900 parts of tetrahydrofuran, 110 parts of magnesium chips, 800 parts of silicon tetrachloride, and 680 parts of water;

[0029] S2. Primary reaction: Add tetrahydrofuran and magnesium chips into the No. 1 reactor, mix and stir them evenly with a stirrer, then heat the temperature inside the reactor to 70°C, and then feed vinyl chloride gas into the No. 1 reactor. Then keep warm for 3h to obtain Grignard agent;

[0030] S3, adding materials: adding silicon tetrachloride to the No. 2 reactor;

[0031] S4. Secondary reaction: add the Grignard agent in the No. 1 reactor after the first reaction of S2 to the No. 2 reactor, and control the temperature in the No. 2 reactor to maintain at -1°C;

[0032] S5. Separation and rectification: heat the temper...

Embodiment 2

[0039] refer to figure 1 , a preparation method of tetravinylsilane, specifically comprising the following steps:

[0040] S1. Select raw materials: select the following weight components for later use: 290 parts of vinyl chloride, 2000 parts of tetrahydrofuran, 130 parts of magnesium chips, 800 parts of silicon tetrachloride, and 680 parts of water;

[0041] S2. One reaction: add tetrahydrofuran and magnesium chips into the No. 1 reactor, mix and stir them evenly with a stirrer, then heat the temperature in the reactor to 76°C, and then feed vinyl chloride gas into the No. 1 reactor. Then keep warm for 3h to obtain Grignard agent;

[0042] S3, adding materials: adding silicon tetrachloride to the No. 2 reactor;

[0043] S4. Secondary reaction: add the Grignard agent in the No. 1 reactor after the primary reaction of S2 dropwise into the No. 2 reactor, and control the temperature in the No. 2 reactor to maintain at 0°C;

[0044] S5. Separation and rectification: heat the te...

Embodiment 3

[0049] refer to figure 1 , a preparation method of tetravinylsilane, specifically comprising the following steps:

[0050] S1. Select raw materials: select the following weight components for use: 300 parts of vinyl chloride, 2000 parts of tetrahydrofuran, 120 parts of magnesium chips, 816 parts of silicon tetrachloride, and 700 parts of water;

[0051] S2. One reaction: add tetrahydrofuran and magnesium chips into the No. 1 reactor, mix and stir them evenly with a stirrer, then heat the temperature in the reactor to 76°C, and then feed vinyl chloride gas into the No. 1 reactor. Then keep warm for 3h to obtain Grignard agent;

[0052] S3, adding materials: adding silicon tetrachloride to the No. 2 reactor;

[0053] S4. Secondary reaction: add the Grignard agent in the No. 1 reactor after the primary reaction of S2 dropwise into the No. 2 reactor, and control the temperature in the No. 2 reactor to maintain at 0°C;

[0054] S5. Separation and rectification: heat the temperat...

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Abstract

The invention discloses a preparation method of tetravinylsilane. According to main points in a technical scheme of the invention, the preparation method is characterized by specifically comprising the following steps: S1, selection of raw materials; S2, primary reaction; S3, injecting and adding of materials; S4, secondary reaction; and S5, liquid separation and rectifying. According to the method, the tetravinylsilane is produced and manufactured through five steps of raw material selection, primary reaction, material injection and addition, secondary reaction and liquid separation and rectification, so production process is simple, and the number of post-treatment steps is small; a secondary reaction is carried out in a reaction kettle II in a titration manner, so controllability is high, and production is easy to expand; and raw materials adopted in the process are single, simple and easily available, and a waste generation amount is small.

Description

technical field [0001] The invention relates to the field of preparation of tetravinylsilane, in particular to a preparation method of tetravinylsilane. Background technique [0002] The CAS number of tetravinylsilane is 1112-55-6, also known as tetravinylsilane, the molecular formula is C8H12Si, the molecular weight is 136.27, the EINECS number is 214-192-0; its boiling point is 130-131°C, and its flash point is 43°F [0003] The production method of tetravinylsilane usually adopts direct method and organometallic synthesis method. Among them, the direct method is to use higher temperature and the presence of a copper catalyst to directly react vinyl halides with silicon powder to produce hydrocarbyl halosilanes. Organometallic synthesis mostly uses the Grignard reagent method. [0004] But the preparation method of the tetravinylsilane of the applied application of application at present still has some shortcomings, as: one, poor controllability during reaction; By-pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F7/08C07F7/20
CPCC07F7/0805C07F7/20
Inventor 李杰张彩云刘巨文
Owner 苏州矽索新材料有限公司
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