Production method of gamma-chloropropyl trichlorosilane

A chloropropyltrichlorosilane, a production method technology, applied in chemical instruments and methods, compounds of periodic table Group 4/14 elements, organic compounds/hydrides/coordination complex catalysts, etc., can solve the problem of poor selectivity and other problems, to achieve the effect of short reaction time, inhibition of side reactions, and small amount of catalyst

Active Publication Date: 2016-05-04
淄博市临淄齐泉工贸有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 2) The Speier catalyst catalyzes the hydrosilation reaction of chloropropene and hydrogen-containing chlorosilane with poor selectivity. In addition to the main reaction of 3-chloropropyltrichlorosilane, there is also a side reaction of silicon hydrogen compound reduction of chloropropene to obtain the by-product propylene and silicon tetrachloride;

Method used

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  • Production method of gamma-chloropropyl trichlorosilane

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Before feeding, the 5m 3 Glass-lined reactor 1 is replaced once, and after completion, 1kg of 1% by mass chloroplatinic acid acetylacetone solution (385ppm of the total amount of trichlorosilane) is added from catalyst, additive and silicon tetrachloride inlet 2 , 7.8kg of 1,5-cyclooctadiene (3000ppm of the total amount of trichlorosilane) and 260kg of silicon tetrachloride (10% of the total amount of trichlorosilane), followed by 4 ingredients in the trichlorosilane metering tank 2600kg, 1475kg of chloropropene metering tank 5 ingredients. Put the material in the chloropropene metering tank 5 into the glass-lined reactor 1, and start adding trichlorosilane dropwise after confirming that it is correct. As the reaction progresses, the temperature of the glass-lined reactor 1 begins to rise gradually. When the temperature rises to 57°C At this time, silicon tetrachloride began to condense and reflux through the condenser 3, and there was reflux at the observation cup 6. ...

Embodiment 2

[0026] Before feeding, the 5m 3 The glass-lined reactor 1 is replaced once, and after completion, 0.9kg of 0.9% by mass chloroplatinic acid acetylacetone solution (350ppm of the total amount of trichlorosilane) is added from the catalyst, auxiliary agent and silicon tetrachloride inlet 2. ), 1,5-cyclooctadiene 7.8kg (3000ppm of the total amount of trichlorosilane) and 312kg of silicon tetrachloride (12% of the total amount of trichlorosilane), followed by 4 trichlorosilane metering tanks Batching 2600kg, chloropropene metering tank 5 batching 1560kg. Put the material in the chloropropene metering tank 5 into the glass-lined reactor 1, and start adding trichlorosilane dropwise after confirming that it is correct. As the reaction progresses, the temperature of the glass-lined reactor 1 begins to rise gradually. When the temperature rises to 57°C At this time, silicon tetrachloride began to condense and reflux through the condenser 3, and there was reflux at the observation cup ...

Embodiment 3

[0028] Before feeding, the 5m 3 Glass-lined reactor 1 is replaced once, and after completion, 1.08 kg of 1.3% by mass chloroplatinic acid acetylacetone solution (400 ppm of the total amount of trichlorosilane) is added from catalyst, auxiliary agent and silicon tetrachloride inlet 2. ), 7.28kg of 1,5-cyclooctadiene (2800ppm of the total amount of trichlorosilane) and 390kg of silicon tetrachloride (15% of the total amount of trichlorosilane), followed by 4 trichlorosilane metering tanks Batching 2600kg, chloropropene metering tank 5 batching 1690kg. Put the material in the chloropropene metering tank 5 into the glass-lined reactor 1, and start adding trichlorosilane dropwise after confirming that it is correct. As the reaction progresses, the temperature of the glass-lined reactor 1 begins to rise gradually. When the temperature rises to 57°C At this time, silicon tetrachloride began to condense and reflux through the condenser 3, and there was reflux at the observation cup 6...

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Abstract

The invention discloses a production method of gamma-chloropropyl trichlorosilane, belonging to the technical field of silicon chemical industry. The production method is characterized by comprising the following preparation steps: proportioning trichlorosilane and chloropropene, and then injecting into a measuring tank for standby application; adding a chloroplatinic acid catalyst, a side reaction inhibitor and silicon tetrachloride into a reaction still; adding the whole chloropropene into the reaction still, and then starting to dropwise add the trichlorosilane, wherein when the temperature of the reaction still is gradually increased to 57 DEG C along with the process of a reaction, silicon tetrachloride starts to get condensate and flows back, and the whole trichlorosilane is dropwise added within 4h-9h; after the whole trichlorosilane is dropwise added, increasing the temperature to 80-90 DEG C, keeping the temperature for 1-2.5h, and separating a product to obtain the gamma-chloropropyl trichlorosilane. According to the production method, the reaction can be performed at a low temperature or normal temperature, an induction period is not needed, the reaction time is short, and the catalyst is not easy to inactivate and is small in use amount.

Description

technical field [0001] A production method of γ-chloropropyltrichlorosilane belongs to the technical field of silicon chemical industry. Background technique [0002] The existing production process of γ-chloropropyltrichlorosilane basically utilizes Speier catalyst to catalyze chloropropene and hydrogen-containing chlorosilane to carry out silicon hydrogen reaction, and the existing problems can be summarized as follows: [0003] 1) The Speier catalyst catalyzes the hydrosilylation reaction of chloropropene and hydrochlorosilane with a long induction period, and the reaction temperature needs to reach 80°C~100°C to start the reaction. The reaction time is long, the catalyst is easy to deactivate, and the amount of catalyst is large. In addition, HCL and FeCL 3 Impurities such as inhibit the catalytic hydrosilylation reaction; [0004] 2) The Speier catalyst catalyzes the hydrosilation reaction of chloropropene and hydrogen-containing chlorosilane with poor selectivity. In...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F7/14B01J31/22
CPCB01J31/2213B01J2231/323B01J2531/828B01J2531/90C07F7/14
Inventor 齐峰全孔德强杨义会崔安平孙东张宇峰
Owner 淄博市临淄齐泉工贸有限公司
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