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

Preparation method of 1,1-diphenylethane insulating oil

A technology of diphenylethane and insulating oil, applied in 1 field, can solve problems such as affecting the efficient and safe operation of power capacitors, and achieve the effects of broad market application prospects, low production cost, and high product yield

Inactive Publication Date: 2012-05-23
YANTAI JINZHENG FINE CHEM
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The latest research results show that the physical and chemical performance indicators such as aromaticity, viscosity, and freezing point of insulating liquid directly affect its electrical performance indicators, which in turn affect the efficient and safe operation of power capacitors

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

[0009] Example 1: 386.15 grams of benzene, heat up to 30 degrees Celsius, add 15.25 grams of aluminum trichloride to benzene, slowly add 60.15 grams of 1,1-dichloroethane dropwise, continue the dropwise addition for 4 hours, and then heat up to 60 degrees Celsius , continue to react for 1.5 hours. After the reaction, the mixture is washed with water and alkali, and then washed with water until neutral, and the fraction at 180-200 degrees Celsius is cut off by distillation (vacuum degree 0.1 MPa) to obtain 1,1-diphenylethane. The product yield is 63.6%.

Embodiment 2

[0010] Example 2: 366.25 grams of benzene, the temperature was raised to 35 degrees Celsius, 11.6 grams of aluminum trichloride was added to benzene, 48.35 grams of 1,1-dichloroethane was slowly added dropwise, and the dropwise addition was continued for 3 hours, and then the temperature was raised to 70 degrees Celsius , continue to react for 1.5 hours. After the reaction, the mixture is washed with water and alkali, and then washed with water until neutral, and the fraction at 180-200 degrees Celsius is cut off by distillation (vacuum degree 0.1 MPa) to obtain 1,1-diphenylethane. The product yield is 64.25%.

Embodiment 3

[0011] Example 3: 381.15 grams of benzene, the temperature was raised to 35 degrees Celsius, 12.25 grams of aluminum trichloride was added to benzene, 45.36 grams of 1,1-dichloroethane was slowly added dropwise, and the dropwise addition was continued for 3 hours, and then the temperature was raised to 60 degrees Celsius , continue to react for 1.5 hours. After the reaction, the mixture is washed with water and alkali, and then washed with water until neutral, and the fraction at 180-200 degrees Celsius is cut off by distillation (vacuum degree 0.1 MPa) to obtain 1,1-diphenylethane. The product yield is 66.5%.

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 preparation method of 1,1-diphenylethane insulating oil. The method comprises the following steps: heating benzene to a reaction temperature under the existence of Lewis acid catalyst; slowly dropping 1,1-dichloroethane in the benzene; continuously increasing the temperature for a certain time after dropping the 1,1-dichloroethane; washing products with water and alkali;and rectifying to obtain 1,1-diphenylethane. The insulating oil has the advantages of low dielectric loss, high aromaticity, low viscosity, and the like and can be used as a high-performance power condenser impregnant.

Description

(1) Technical field: [0001] The invention relates to a preparation method of 1,1-diphenylethane insulating oil, and the synthesized insulating liquid is mainly used as an impregnating agent for electric capacitors. (two) background technology: [0002] With the rapid development of my country's power industry and the continuous expansion of the scale of the power system, the importance of power capacitors is increasing, and the requirements for power capacitors are getting higher and higher, and there are trends of low loss, high reliability, and miniaturization. In recent years, the emergence of all-film power capacitors has put forward higher requirements for power capacitor impregnants. The safe operation of power capacitors requires that the insulating medium has the characteristics of low viscosity, low dielectric loss, good partial discharge performance and good air absorption. At present, the main components of insulating oil commonly used in my country are benzyltol...

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 Patents(China)
IPC IPC(8): C07C15/16C07C1/26
Inventor 鲍贻清张雷英刘玮胡超超
Owner YANTAI JINZHENG FINE CHEM