Unlock instant, AI-driven research and patent intelligence for your innovation.

New synthesis method of high purity quaternary ammonium salt

A synthesis method and quaternary ammonium salt technology are applied in the field of quaternary ammonium salt synthesis and high-purity quaternary ammonium salt (active substance content of more than 99%) synthesis, which can solve the problems of low production capacity, high cost, low yield and the like, and achieve The effect of reduced energy consumption, increased production capacity, and zero emissions

Inactive Publication Date: 2014-11-26
安徽奔马先端科技有限公司
View PDF6 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The purpose of the present invention is to provide a high-yield, high-purity, high-efficiency, low-cost synthetic quaternary ammonium salt for the shortcomings of low yield, low purity, low production capacity, and high cost in the existing quaternary ammonium salt synthesis method. new method

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Take by weighing 510g of dedecyl dimethyl tertiary amine, join in the small-sized reactor that fills 940g ethyl acetate and 55g ethanol, then add 136g of methyl chloride in the kettle, keep the temperature in the kettle at 75°C, stir and react for 5 hours, After the reaction was finished, it was naturally cooled to room temperature, aged for 18 hours, and suction-filtered to obtain 608 g of dedecyltrimethylammonium chloride, with a yield of 94.2%, and the quantitative analysis of the content of dedecyltrimethylammonium chloride was 99.3%.

Embodiment 2

[0034] Weigh 600g of dodecyl dimethyl tertiary amine, add it into a small reaction kettle containing 1125g of isopropanol, then add 261.6g of methyl bromide into the kettle, keep the temperature in the kettle at 80°C, stir and react for 6 hours, and the reaction ends After cooling naturally to room temperature, after aging for 20 hours, suction filtration obtained 821 g of dodecyltrimethylammonium bromide, with a yield of 95.2%, and the content of cetyltrimethylammonium chloride in quantitative analysis was 99.4%.

Embodiment 3

[0036] Weigh 580g tetradecyl dimethyl tertiary amine, add it into a small reaction kettle containing 930g butanone and 55g methanol, then add 118.5g methyl chloride into the kettle, keep the temperature in the kettle at 78°C, and stir for 6 hours After the reaction was finished, it was naturally cooled to room temperature, and after aging for 22 hours, it was subjected to suction filtration to obtain 647 g of tetradecyltrimethylammonium chloride, with a yield of 92.8%, and the quantitative analysis of tetradecyltrimethylammonium chloride content was 99.2%.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a new synthesis method of quaternary ammonium salt, and especially relates to the synthesis method of high purity quaternary ammonium salt (active matter content is more than 99%). According to the invention, a catalyst is not required, and inert atmosphere protection is not required, in a proper solvent, tertiary amine and halogenated hydrocarbon successively pass through two processes of quaternization and crystallization for one-step reaction to prepare the high purity quaternary ammonium salt (active matter content is more than 99%). The method comprises the following steps: placing the tertiary amine with the ratio in a reaction vessel, adding a proper amount of solvent, stirring at normal temperature, controlling a proper flow amount, pumping halogenated hydrocarbon with corresponding amount, heating to 40-90 DEG C, insulating for 1-6 hours; naturally cooling the material to room temperature after the reaction is completed, continuously aging for 12-36 hours, and then separating the mother liquor to obtain the high purity quaternary ammonium salt product. According to the invention, the technology is simple, zero discharge can be realized, and product yield and purity can reach more than 99%.

Description

technical field [0001] The invention mainly relates to the field of synthesis of quaternary ammonium salts, in particular to the field of synthesis of high-purity quaternary ammonium salts (with an active substance content of more than 99%). Background technique [0002] As an important chemical raw material, quaternary ammonium salt has been widely used in chemical industry, medicine, mining, printing and dyeing, construction, plastic processing, oil exploitation and other fields. [0003] With the development of science and technology, the application fields of quaternary ammonium salts continue to expand, and the requirements for the purity of quaternary ammonium salts are getting higher and higher. For example, for quaternary ammonium salts used as ionic liquid electrolytes, the halogen content is required to be less than 10ppm; quaternary ammonium salts and their downstream products are used as cleaning agents in the microelectronics industry, where the free...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C07C209/12C07C209/86C07C211/63
Inventor 邱建兴章晶侯超东花林
Owner 安徽奔马先端科技有限公司