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A single tower reaction industrial preparation process of alkoxyhydrogensilane

A kind of technology of alkoxyhydrogensilane and preparation process, which is applied in the direction of silicon organic compounds, etc., can solve the problems of insufficient industrial preparation process, and achieve the effect of increasing product content

Active Publication Date: 2019-04-02
JINGZHOU JIANGHAN FINE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to: provide an alkoxyhydrogensilane single-tower reaction industrialization that can effectively improve production efficiency and control the side reactions generated in the production process; solve many shortcomings of the existing alkoxyhydrogensilane preparation methods Preparation Process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Press the methanol and trichlorosilane raw materials into the metering tank and weigh the metering volume respectively. The methanol is divided into two metering tanks. Slowly raise the temperature of the kettle to 45°C, raise the temperature of the gas phase methanol evaporator to 110°C, feed the material after the temperature rise is completed, strictly control the mass ratio during the feeding process, trichlorosilane:gas phase methanol:liquid phase methanol=1:0.3:0.4 Control, the upper tower temperature is controlled at 20°C, the middle tower temperature is controlled at 70°C, and the lower tower is controlled at 56°C.

[0022] After the capacity of the crude product in the reaction kettle reaches saturation, it will be transported to the overflow kettle through pipelines for aging. The aging temperature is controlled at: 65°C and aged for two hours. Pour the aged crude product into the rectification kettle, and the temperature of the rectification kettle is slow. T...

Embodiment 2

[0024] Press the methanol and trichlorosilane raw materials into the metering tank and weigh the metering volume respectively. The methanol is divided into two metering tanks. Slowly raise the temperature of the kettle to 50°C, raise the temperature of the gas phase methanol evaporator to 115°C, feed the material after the temperature rise is completed, strictly control the mass ratio during the feeding process, trichlorosilane:gas phase methanol:liquid phase methanol=1:0.3:0.4 Control, the upper tower temperature is controlled at 25°C, the middle tower temperature is controlled at 75°C, and the lower tower is controlled at 55°C.

[0025] After the capacity of the crude product in the reaction kettle reaches saturation, it will be transported to the overflow kettle through pipelines for aging. The aging temperature is controlled at: 60°C, aged for two hours, and the aged crude product is poured into the rectification kettle, and the temperature of the rectification kettle is sl...

Embodiment 3

[0027] Press the methanol and trichlorosilane raw materials into the metering tank and weigh the metering volume respectively. The methanol is divided into two metering tanks. Slowly raise the temperature of the kettle to 50°C, raise the temperature of the gas phase methanol evaporator to 115°C, feed the material after the temperature rise is completed, strictly control the mass ratio during the feeding process, trichlorosilane:gas phase methanol:liquid phase methanol=1:0.3:0.4 Control, the temperature of the upper tower is controlled at 30°C, the temperature of the middle tower is controlled at 80°C, and the temperature of the lower tower is controlled at 60°C.

[0028] After the capacity of the crude product in the reaction kettle reaches saturation, it will be transported to the overflow kettle through pipelines for aging. The aging temperature is controlled at: 60°C, aged for two hours, and the aged crude product is poured into the rectification kettle, and the temperature ...

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Abstract

The invention relates to an alkoxy hydrosilane single-tower reaction industrial preparing technology and belongs to the technical field of fine chemical engineering. The alkoxy hydrosilane single-tower reaction industrial preparing technology comprises the steps that hydrogen-containing monomers and alcohol serve as the raw materials, and a reaction is carried out under the gas and liquid alcohol bi-directional esterification condition to synthesize an alkoxy hydrosilane product. According to the alkoxy hydrosilane single-tower reaction industrial preparing technology, a single tower is adopted, the esterification technology of feeding gas alcohol in a lower tower body, feeding the hydrogen-containing monomers in a middle tower body and feeding liquid alcohol in an upper tower body is carried out, quasi-continuous production can be achieved through an overflow kettle, the mass ratio is strictly controlled in the production process, the equal mole reaction of the two reaction materials is ensured, and thus various side reactions are reduced to the maximum. The method overcomes many defects of an existing preparing method of alkoxy hydrosilane, the production efficiency is effectively improved, and the demand for alkoxy hydrosilane by the market is met.

Description

technical field [0001] The invention relates to a single-tower reaction industrial preparation process of alkoxyhydrogensilane, which belongs to the technical field of fine chemicals. Background technique [0002] Alkoxyhydrogensilane is an important organosilicon intermediate. The silane coupling agent produced from it is widely used in coatings, electronics and other industries. Alkoxysilane contains both hydrolyzed alkoxy bonds and Contains active hydrogen bonds (Si-H), in which alkoxy bonds are converted into siloxanes through hydrolytic condensation; reacting with Grignard reagents can generate organoalkoxysilanes; Si-H bonds can be combined with a series of alkenes and alkynes Compounds with unsaturated groups such as unsaturated groups undergo hydrosilylation reaction under the presence of platinum catalysts to obtain various silicone coupling agents, silicone end-capped and cured polyethers, polyacrylate sealants and adhesives, etc., and are suitable for Used in the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F7/02
CPCC07F7/02
Inventor 吴兵兵刘明锋陈圣云甘俊甘书官
Owner JINGZHOU JIANGHAN FINE CHEM
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