Alkyl silicone continuous production system and production method

A production system, the technology of alkyl silicon, applied in the direction of coating, etc., can solve the problems of difficulty in meeting the production requirements of high-quality and large-volume hydrocarbon-based silicone resin, the termination of the production process, and low production efficiency, so as to achieve low labor intensity and fast The effect of fast response and heat dissipation

Inactive Publication Date: 2010-07-07
INST OF PROCESS ENG CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This intermittent production method has high labor intensity and low production efficiency, and it is difficult to meet the production requirements of high-quality and large-volume hydrocarbon-based silicone resins.
There are also literature reports on the continuous production equipment of hydrocarbyl silicone resin, but the literature directly mixes hydrocarbyl chlorosilane and water in the pipeline, and then enters a series of reactors for hydrolysis reaction. Cross-linking of reactants often occurs, forming a gel, and even causing the production process to stop

Method used

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  • Alkyl silicone continuous production system and production method
  • Alkyl silicone continuous production system and production method
  • Alkyl silicone continuous production system and production method

Examples

Experimental program
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Effect test

Embodiment 1

[0033] refer to figure 2, making the reciprocating vibrating sieve plate in the continuous production system of the present invention, the first reciprocating vibrating sieve plate H of the present embodiment and the second reciprocating vibrating sieve plate (O) have the same structure, and can be made of a plurality of sieve plate discs It is fixed on a connecting shaft, and the connecting shaft is connected with a motor and an eccentric wheel. The sieve disc is made of polytetrafluoroethylene, and its diameter is smaller than the inner diameter of the reaction tower E or the washing tower L respectively. The number of multiple sieve discs can be 10, 20, 30, or 50, for example. The sieve discs have circular holes, wherein the opening ratio is not less than 30%, and the diameter of the disc holes is not less than 1 mm. The first reciprocating vibrating sieve plate H is set and fixed on the connecting shaft U by 10 sieve plate discs. The sieve plate discs are installed in pa...

Embodiment 2

[0042] 1) Reactant ratio (weight ratio)

[0043] Monomethyltrichlorosilane 40

[0044] Toluene 60

[0045] 2) Proportion of hydrolyzing agent (weight ratio)

[0046] Ethanol 90

[0047] water 10

[0048] First prepare the reactant solution, according to monomethyltrichlorosilane: Toluene is The weight ratio batching of 40:60 is mixed with the toluene solution of monomethyltrichlorosilane, which will be stored in storage tank A;

[0049] Preparation of hydrolyzing agent: according to the weight ratio of ethanol: water is 90: 10; dissolve ethanol in water, prepare hydrolyzing agent, store in storage tank B;

[0050] According to the reactant solution of monomethyltrichlorosilane: the weight ratio of hydrolyzing agent is 16: 84 to carry out batching;

[0051] From the raw material tank A, the toluene solution prepared in step 1) into monomethyltrichlorosilane is sent from the bottom of the reaction tower E through the pipeline C where the metering pump is installed, and th...

Embodiment 3

[0056] 1) Reactant ratio (weight ratio)

[0057] One methyl trichlorosilane 12~34

[0058] Dimethyldichlorosilane 4~32

[0059] One ethyl trichlorosilane 1~23

[0060] Butyl acetate 55~60

[0061] 2) Proportion of hydrolyzing agent (weight ratio)

[0062] Ethanol 80

[0063] water 20

[0064] refer to figure 2 , the continuous production process for preparing the alkyl silicone resin is the same as in Example 2, the above-mentioned alkyl chlorosilane and toluene are fully mixed and then pressed into the raw material tank A, the ethanol solution is pressed into another raw material tank B, and the ethanol solution passes through the pipeline installed with the metering pump D is added from the top of the reaction tower, and the mixture of the above-mentioned alkylchlorosilane solution is added from the bottom of the reaction tower through the pipeline C installed with a metering pump. The mass ratio of the alkylchlorosilane solution to the ethanol solution is 25:75; star...

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Abstract

The invention relates to an alkyl silicone continuous production system and a production method thereof. The production system comprises a reaction still and a washer; a first reciprocating sieve plate and a second reciprocating sieve plate are respectively arranged in the reaction still and the washer and driven to reciprocate by a motor and an eccenter; a conduit is connected between the reaction still and the washer, a tap water input conduit is arranged on the top of the washer and a water outlet is arranged at the bottom of the washer; alkylsilanol solution flows into the bottom of the washer through a conduit, and a conduit is arranged between the washer and a vacuum distillation tower; the vacuum distillation tower is communicated with a product storage pot through a conduit. The production method includes that alkylchlorosilane reactant solution and hydrolysate are prepared; alkylchlorosilane is hydrolyzed under 1-25 DEG C, the hydrolyzed silanol solution is separated from a settling chamber on the top of the washer, washed in the washer and conducted to the washer bottom through a flowmeter by 0.1-1.0 cubic meters per hour; water is sent in from the washer top through the flowmeter by 0.2-5.0 cubic meters per hour; the silanol solution is washed in countercurrent until the pH value is 6.5-7 and then condensed in vacuum to become alkyl silicone.

Description

technical field [0001] The invention relates to a production equipment and method of silicone resin, specifically refers to a production system and production method for continuously producing alkyl silicone resin by using an alkyl chlorosilane as a raw material and using a reaction tower and a washing tower. Background technique [0002] There are two ways to prepare hydrocarbon-based silicone resin, one is based on hydrocarbon-based alkoxysilane (RSi(OR') 3 , R 2 Si(OR') 2 etc.) through hydrolysis and polycondensation to produce hydrocarbon-based silicone resin, and the other is based on hydrocarbon-based chlorosilane (RSiCl) 3 , R 2 SiCl 2 etc.) as raw materials to prepare hydrocarbon-based silicone resin by hydrolysis and polycondensation. The second production method has short technological process and low cost, and is widely adopted by people. According to literature reports, hydrocarbyl silicone resin is produced by the second method, most of which adopt dropwis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G77/06C09D183/04
Inventor 王文忠段东平
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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