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Synthesizing method for environment-friendly silane cross-linking agent

A technology of silane crosslinking agent and synthesis method, which is applied in chemical instruments and methods, compounds of elements of Group 4/14 of the periodic table, and adhesives, etc., can solve the problems that ordinary dealcoholized silicone sealants cannot meet market demands and other problems. , to achieve the effect of superior electrical performance, excellent insulation performance and simple process

Inactive Publication Date: 2018-05-04
JINGZHOU JIANGHAN FINE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the development of the high-precision electronics industry, ordinary dealcoholized silicone sealants can no longer meet market demand, and it is extremely necessary to develop new silicone sealants

Method used

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  • Synthesizing method for environment-friendly silane cross-linking agent

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Experimental program
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Effect test

Embodiment 1

[0025] Add 779.5 g of ethyl lactate and 607.1 g of triethylamine in a 3000 ml four-necked reaction flask with mechanical stirring, a constant pressure dropping funnel and a condenser, then add 1179.9 g of solvent petroleum ether, and finally add the same to the constant pressure dropping funnel 299 g of methyltrichlorosilane was added. Methyltrichlorosilane was added dropwise with mechanical stirring at 300 rpm. The temperature was controlled at 30° C., and the dropping time was controlled at 6 hours. After the dropwise addition, the reaction was continued for 30 minutes to generate a mixture of methyltrilactateethylsilane and triethylamine hydrochloride. After the reaction is completed, filter under reduced pressure to remove the triethylamine hydrochloride generated by the reaction. The mother liquor is distilled at normal pressure to recover the solvent petroleum ether, and then distilled under reduced pressure to recover a small amount of excess ethyl lactate raw material...

Embodiment 2

[0027] Add 779.5g of ethyl lactate and 607.1g of triethylamine in a 3000ml four-necked reaction flask with mechanical stirring, constant pressure dropping funnel and condenser, add solvent petroleum ether 1011.4g, and finally add to the constant pressure dropping funnel 299 g of methyltrichlorosilane was added. Methyltrichlorosilane was added dropwise with mechanical stirring at 300 rpm. The temperature was controlled at 50° C., and the dropping time was controlled at 5 hours. After the dropwise addition, the reaction was continued for 30 minutes to generate a mixture of methyltrilactateethylsilane and triethylamine hydrochloride. After the reaction is finished, filter under reduced pressure to remove the triethylamine hydrochloride generated by the reaction. The mother liquor is distilled at normal pressure to recover the solvent petroleum ether, and then distilled under reduced pressure to recover a small amount of excess ethyl lactate raw material. Finally, 764.8g of colo...

Embodiment 3

[0029] Add 779.5g of ethyl lactate and 607.1g of triethylamine in a 3000ml four-necked reaction flask with mechanical stirring, constant pressure dropping funnel and condenser, add solvent sherwood oil 842.8g, and finally add to the constant pressure dropping funnel 299 g of methyltrichlorosilane was added. Methyltrichlorosilane was added dropwise with mechanical stirring at 300 rpm. The temperature was controlled at 70° C., and the dropping time was controlled at 4 hours. After the dropwise addition, the reaction was continued for 30 minutes to generate a mixture of methyltrilactateethylsilane and triethylamine hydrochloride. After the reaction is finished, filter under reduced pressure to remove the triethylamine hydrochloride generated by the reaction. The mother liquor is distilled at normal pressure to recover the solvent petroleum ether, and then distilled under reduced pressure to recover a small amount of excess ethyl lactate raw material. Finally, 760.5 g of colorle...

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Abstract

The invention relates to a synthesizing method for an environment-friendly silane cross-linking agent, and belongs to the field of silane cross-linking agent synthesis. The synthesizing method for theenvironment-friendly silane cross-linking agent comprises the following steps: reacting to generate MTELS by taking methyl trichlorosilane, ethyl lactate and triethylamine as raw materials and takingpetroleum ether as a solvent; filtering under reduced pressure after the reaction, and removing triethylamine hydrochloride; then, distilling to recycle the petroleum ether serving as the solvent toobtain the product, namely, the environment-friendly silane cross-linking agent. The synthesizing method for the environment-friendly silane cross-linking agent has the advantages of easiness in operation, high reaction conversion rate, high yield, stable quality, safety and environment-friendliness in product use and the like; corrosive hydrogen chloride gas is not produced in the overall process; the environment is not polluted.

Description

technical field [0001] The invention relates to a method for synthesizing an environment-friendly silane crosslinking agent, belonging to the field of silane crosslinking agent synthesis. Background technique [0002] At present, there are mainly three types of silicone sealants: deoxime type, dealcoholized type and deacetic acid type. The vulcanization process releases oximes, alcohols and acetic acid small molecules respectively. Among them, small molecules of oxime have been considered to have a potential carcinogenic effect on the human body. Small molecules of alcohols, especially methanol, also have negative effects on human vision and respiratory system. The pungent smell of small molecules of acetic acid is also known to most construction workers. do not like. As one of the indispensable materials in the electronic and electrical industry, sealant must also adapt to the increasingly higher technical requirements of the downstream market of the industrial chain. Due...

Claims

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Application Information

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IPC IPC(8): C07F7/18C09J11/06C09J183/04
CPCC07F7/188C08K5/5419C09J11/06C09J183/04
Inventor 王欣陈其张宇阮少阳陈圣云甘俊甘书官
Owner JINGZHOU JIANGHAN FINE CHEM
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