Method for producing 4-propyl-[1,3,2]dioxathiolane-2,2-dioxide

Abstract

A method for producing 4-propyl-[1,3,2]dioxathiolane-2,2-dioxide comprises an addition reaction, an oxidation reaction and a purifying process. The method concretely comprises the following steps: 1, carrying out the addition reaction: carrying out addition reaction on thionyl chloride and 1,2-pentanediol as reaction raw materials; 2, carrying out the oxidation reaction: adding a sodium hypochlorite and catalyst mixed solution, carrying out the oxidation reaction to obtain a water phase and organic phase co-existence reaction solution, standing the water phase and organic phase co-existence reaction solution for layering, and separating the obtained water phase to obtain the organic phase which is crude 4-propyl-[1,3,2]dioxathiolane-2,2-dioxide; and 3, purifying: carrying out molecular distillation to obtain 4-propyl-[1,3,2]dioxathiolane-2,2-dioxide. The purity of the prepared 4-propyl-[1,3,2]dioxathiolane-2,2-dioxide can be greater than 99.5%, the water content is not greater than 100PPM, the acid value is not greater than 100PPM, and 4-propyl-[1,3,2]dioxathiolane-2,2-dioxide can be added to a battery in order to improve the performances of the battery and prolong the life of the battery.

Description

technical field

[0001] The invention belongs to the technical field of chemical power sources, in particular to a method for producing 4-propyl vinyl sulfate. Background technique

[0002] With the development of my country's electronic information industry, the demand for chemical power is increasing, and its performance requirements are getting higher and higher. Lithium-ion batteries have the advantages of small size, good safety performance, light weight, high specific energy, high voltage, long life, no pollution, etc., which are incomparable to other chemical power sources. The main power supply for portable electronic devices such as camcorders and digital cameras. In recent years, the basic research and application development of lithium-ion batteries have become one of the hot spots. A lithium battery includes a positive electrode, a negative electrode, an electrolyte, and a separator. However, during the charging and discharging process, the battery will release ...

Examples

Embodiment Construction

[0025] The present invention provides a kind of method of producing 4-propyl vinyl sulfate for solving the defect of poor performance of battery during high temperature situation in the prior art, below in conjunction with specific embodiment the present invention is further described.

[0026] One, the inventive method is as follows:

[0027] A kind of method for producing 4-propyl vinyl sulfate, comprises addition reaction and oxidation reaction, also comprises refining process, and the concrete steps of described method are:

[0028] A. Addition reaction: Addition reaction is carried out with thionyl chloride and 1,2-pentanediol as reaction raw materials. During this process, thionyl chloride is added to the first reaction kettle, and then the temperature is lowered. When the temperature When the temperature drops to -10°C, add 1,2-pentanediol dropwise to the first reaction kettle, and after the dropwise addition, keep it at -10°C for 3 hours to obtain a reaction solution; ...

technical field

[0001] The invention belongs to the technical field of chemical power sources, in particular to a method for producing 4-propyl vinyl sulfate. Background technique

[0002] With the development of my country's electronic information industry, the demand for chemical power is increasing, and its performance requirements are getting higher and higher. Lithium-ion batteries have the advantages of small size, good safety performance, light weight, high specific energy, high voltage, long life, no pollution, etc., which are incomparable to other chemical power sources. The main power supply for portable electronic devices such as camcorders and digital cameras. In recent years, the basic research and application development of lithium-ion batteries have become one of the hot spots. A lithium battery includes a positive electrode, a negative electrode, an electrolyte, and a separator. However, during the charging and discharging process, the battery will release ...

Examples

Embodiment Construction

[0025] The present invention provides a kind of method of producing 4-propyl vinyl sulfate for solving the defect of poor performance of battery during high temperature situation in the prior art, below in conjunction with specific embodiment the present invention is further described.

[0026] One, the inventive method is as follows:

[0027] A kind of method for producing 4-propyl vinyl sulfate, comprises addition reaction and oxidation reaction, also comprises refining process, and the concrete steps of described method are:

[0028] A. Addition reaction: Addition reaction is carried out with thionyl chloride and 1,2-pentanediol as reaction raw materials. During this process, thionyl chloride is added to the first reaction kettle, and then the temperature is lowered. When the temperature When the temperature drops to -10°C, add 1,2-pentanediol dropwise to the first reaction kettle, and after the dropwise addition, keep it at -10°C for 3 hours to obtain a reaction solution; ...

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