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KR-102962334-B1 - COMPOSITION FOR MANUFACTURING DIELECTRIC FLUID AND DIELECTRIC FLUID

KR102962334B1KR 102962334 B1KR102962334 B1KR 102962334B1KR-102962334-B1

Abstract

This application relates to a dielectric fluid composition and a dielectric fluid.

Inventors

  • 추장우
  • 이성기
  • 조범제
  • 최광민
  • 정우철
  • 유채연

Assignees

  • 오성화학공업(주)

Dates

Publication Date
20260508
Application Date
20240408

Claims (11)

  1. One or more selected from pentaerythritol, di-pentaerythritol, neopentyl glycol (NPG), and di-glycerol; and A composition for manufacturing a genomic fluid comprising mixed fatty acids, The above mixed fatty acids are A composition for preparing a dielectric fluid comprising one or more branched C18 to C22 carboxylic acids.
  2. delete
  3. In paragraph 1, A composition for manufacturing a dielectric fluid in which the above-mentioned branched C18 to C22 carboxylic acid is isostearic acid.
  4. In paragraph 1, The above mixed fatty acids are A composition for manufacturing a dielectric fluid containing 1 mol% or more and 20 mol% or less of the branched C18 to C22 carboxylic acid based on the above mixed fatty acids.
  5. In paragraph 1, A composition for preparing a dielectric fluid, comprising one or more carboxylic acids selected from the group consisting of linear C4 to C7 carboxylic acids; linear C8 to C10 carboxylic acids; and branched C8 to C12 carboxylic acids.
  6. In paragraph 1, The above mixed fatty acids are It further comprises one or more branched C8 to C12 carboxylic acids, and A composition for manufacturing a dielectric fluid containing 20 mol% or more and 60 mol% or less of the branched C8 to C12 carboxylic acid based on the above mixed fatty acids.
  7. In paragraph 5 or 6, The above-mentioned branched C8 to C12 carboxylic acid is a composition for manufacturing a dielectric fluid in which the C3 position of the above-mentioned carboxylic acid is not in a branched form.
  8. In paragraph 1, The above mixed fatty acids are One or more linear C4 to C7 carboxylic acids; and one or more linear C8 to C10 carboxylic acids further comprising, Based on the above mixed fatty acids, the above linear C4 to C7 carboxylic acid comprises 20 mol% or more and 60 mol% or less, and A composition for manufacturing a dielectric fluid comprising 10 mol% or more and 30 mol% or less of the linear C8 to C10 carboxylic acid based on the above mixed fatty acids.
  9. One or more selected from pentaerythritol, di-pentaerythritol, neopentyl glycol (NPG), and di-glycerol; and A dielectric fluid comprising an ester obtained by esterifying a composition for manufacturing a dielectric fluid containing mixed fatty acids, The above mixed fatty acids are A dielectric fluid comprising one or more branched C18 to C22 carboxylic acids.
  10. In Paragraph 9, The above dielectric fluid is a dielectric fluid further comprising one or more additives.
  11. In Paragraph 9, The above dielectric fluid is a dielectric fluid used as an impregnation oil, insulating oil, or battery cooling oil for electric vehicles.

Description

Composition for Manufacturing Dielectric Fluid and Dielectric Fluid The present invention relates to a composition for manufacturing a dielectric fluid and a dielectric fluid. Dielectrics are insulators that acquire polarity within an electric field, and dielectric fluids containing them possess insulating and cooling properties. Due to these characteristics, dielectric fluids are used in various fields, such as impregnation oils and insulating oils. Among them, dielectric fluids used in electrical devices such as transformers in high-voltage environments are also called insulating oils. As described above, in order to use a dielectric fluid in a high-voltage environment, the dielectric fluid must have a high flash point and combustion point, and it is required to have a suitable kinematic viscosity to have excellent cooling performance. Mineral oil-based fluids were the most widely used dielectric fluids. However, mineral oil-based fluids have a problem with fire safety due to their low flash point or fire point. In other words, as various electrical devices tend to increase in voltage and capacity, there has been a demand for corresponding performance improvements in dielectric fluids; considering safety and performance, there is room for improvement in terms of kinematic viscosity, flash point, and combustion point. Therefore, there is a need for research on dielectric fluids that can more effectively perform the roles of insulation and cooling for electrical equipment in terms of kinematic viscosity, flash point, and combustion point. The present invention is described in detail below so that those skilled in the art can easily implement it. However, the present invention may be embodied in various different forms and is not limited to the configurations described herein. In this specification, when a part is described as 'comprising' a certain component, it means that, unless specifically stated otherwise, it does not exclude other components but may include additional components. In this specification, 'p to q' or 'p ~ q' means 'p or more and q or less'. In this specification, 'Cn' means n carbon atoms. For example, C4 to C6 means 4 to 6 carbon atoms. In this specification, known descriptions may apply to "esterification reaction". In this specification, dielectric means a material used as an electricalinsulator . In this specification, unless otherwise specified, viscosity refers to kinematic viscosity. Furthermore, in describing the present invention, detailed descriptions of related known technologies that may unnecessarily obscure the essence of the invention are omitted. Composition for manufacturing genomic fluids The present invention provides a composition for preparing a dielectric fluid comprising a C3 to C10 polyol; and a mixed fatty acid. Specifically, the mixed fatty acid may include one or more branched C13 to C22 carboxylic acids. The composition for manufacturing a dielectric fluid according to the present invention comprises an alcohol and a mixed fatty acid, and can perform an esterification reaction. That is, the composition for manufacturing a dielectric fluid according to the present invention corresponds to a composition for an esterification reaction. Accordingly, the composition for manufacturing a dielectric fluid according to the present invention can produce a dielectric fluid having appropriate kinematic viscosity and high flash point and combustion point that satisfies the physical properties corresponding to IEC 61099, the international standard for insulating oil. The criteria for kinematic viscosity, flash point, and combustion point among the physical properties corresponding to IEC 61099, the international standard for insulating oil, are as shown in Table 1 below. Physical propertiesIEC 61099 standardColor (APHA)200 maxAcid value0.5 maxViscosity (cSt, 40℃)35 maxPour point (°C)-45 maxFlash point (°C, PM)250 minFire point (°C, COC)300 minWater content (ppm)200 max Table 1 above indicates the maximum or minimum values of the physical properties of insulating oil according to IEC 61099 standards. For example, the kinematic viscosity of 35 max in Table 1 above means that the maximum kinematic viscosity satisfying the IEC 61099 international standard for insulating oil is 35 cSt at 40°C. As another example, the flash point (PM standard) of 250 min in Table 1 above means that the minimum flash point (PM standard) satisfying the IEC 61099 international standard is 250°C. Here, PM refers to the PenskyMartens Closed Tester, a closed flash point test. In one embodiment of the present invention, the C3 to C10 polyalcohol may preferably be a C4 to C6 polyalcohol, more preferably a C5 polyalcohol. In one embodiment of the present invention, the C3 to C10 polyalcohol may be one or more selected from pentaerythritol, di-pentaerythritol, neopentyl glycol (NPG), glycerol, and di-glycerol, but is not limited thereto; preferably, it may be pentaerythritol, neopentyl glycol, or di-glycer