Special type organochlorosilane preparation method

A technology of organochlorosilane and hydrochlorosilane, which is applied in the direction of halosilane and halide silicon compounds, can solve the problems of complexity, low yield, and difficult industrial transformation, and achieve high conversion rate, easy industrialization, and low cost.

Active Publication Date: 2006-07-26
HANGZHOU NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] The disadvantage of the prior art is that it is more complicated, additional processes to reclaim the homogeneous catalyst, and / or the method used can only obtain the product of low yield, and / or it is difficult to realize industrial transformation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The reaction is carried out in a stainless steel reactor with a diameter of Φ200mm, the reaction temperature is 610-630°C, the contact time is 16-50 seconds, and the mass ratio of the substance is trichlorosilane (HSiCl 3 ):chlorobenzene (PhCl)=1:2. Reaction under the above conditions, phenyltrichlorosilane (PhSiCl 3 ) yield can reach 62%.

Embodiment 2

[0045] The reaction temperature is 620±10°C, the contact time is 15-30 seconds, and the mass ratio of the substance to methyldichlorosilane (MeSiHCl 2 ):chlorobenzene (PhCl)=1:2. Then methylphenyldichlorosilane (MePhSiCl 2 ) The yield can reach 55%.

[0046] Reaction temperature, contact time, raw material ratio, etc. all have an influence on the yield of the target product. In the absence of a catalyst, temperature is the only driving force for initiating and driving the reaction. Therefore, when the reaction starts, the yield of the target product increases with the increase of the reaction temperature. When it exceeds a certain limit, the cracking of raw materials and products becomes more serious. , so that the yield of the target product is reduced and the product components are complicated; the contact time depends largely on the reaction temperature, that is, at a given temperature, prolonging the contact time is beneficial to improve the conversion rate per pass, but a...

Embodiment 3

[0048] The reaction temperature is 590±10°C, the contact time is 30 seconds, and the mass ratio of the substance to methyldichlorosilane (MeSiHCl 2 ):vinyl chloride (ViCl)=1:2. Then methyl vinyl dichlorosilane (MeViSiCl 2 ) The yield can reach 50%.

[0049] Chlorosilane A

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PUM

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Abstract

The invention provides a process for preparing organic chlorosilane, which comprises reacting hydrogen-containing chlorosilane (A) with chlorohydrocarbon (B) under normal pressure, wherein catalyst may be employed or not according to requirement, the reaction temperature is 400-700 deg. C.

Description

technical field [0001] The invention relates to the field of organic chemistry, in particular to a method for preparing a special organochlorosilane. Background technique [0002] Special organochlorosilanes are important raw materials for preparing organosilicon polymers (silicone oil, silicone rubber and silicone resin) and other silicon functional silanes. The preparation method of special organochlorosilane in the prior art has: [0003] In British Patent GB646629 (1950-11-22), it relates to the preparation process of organosilyl halides. Add 1402g of benzene, 2070g of methyldichlorosilane and 37g of boron trichloride into the autoclave, heat to 300°C and maintain the reaction for 16h to obtain 215g of methylphenyldichlorosilane. [0004] In US Patent US2546330 (1951-03-27), it relates to a preparation process of aryl halosilane. That is, 3 mol of benzene and 3 mol of methyl dichlorosilane were reacted at 470-530°C for 8 hours, and then fractionated to obtain methyl b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/107
Inventor 来国桥吴连斌蒋剑雄华西林邬继荣倪勇
Owner HANGZHOU NORMAL UNIVERSITY
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