EP2841539B1 - Utilisation d'ester mixte comme liquide d'isolation diélectrique - Google Patents

Utilisation d'ester mixte comme liquide d'isolation diélectrique Download PDF

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EP2841539B1
EP2841539B1 EP13726667.2A EP13726667A EP2841539B1 EP 2841539 B1 EP2841539 B1 EP 2841539B1 EP 13726667 A EP13726667 A EP 13726667A EP 2841539 B1 EP2841539 B1 EP 2841539B1
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use according
atoms
acid groups
weight
residues
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German (de)
English (en)
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EP2841539A1 (fr
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Jürgen O. METZGER
Rolf Luther
Angela ROBBEN
Gunther Kraft
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Fuchs SE
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Fuchs Petrolub SE
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/20—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances liquids, e.g. oils
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
    • C10M105/08—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing oxygen
    • C10M105/32—Esters
    • C10M105/38—Esters of polyhydroxy compounds
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/02—Hydroxy compounds
    • C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
    • C10M2207/024—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings having at least two phenol groups but no condensed ring
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/02—Hydroxy compounds
    • C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
    • C10M2207/026—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings with tertiary alkyl groups
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/282—Esters of (cyclo)aliphatic oolycarboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/283—Esters of polyhydroxy compounds
    • C10M2207/2835—Esters of polyhydroxy compounds used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/06—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to an acyloxy radical of saturated carboxylic or carbonic acid
    • C10M2209/062—Vinyl esters of saturated carboxylic or carbonic acids, e.g. vinyl acetate
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/08—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate type
    • C10M2209/084—Acrylate; Methacrylate
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
    • C10M2215/04—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2215/042—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms containing hydroxy groups; Alkoxylated derivatives thereof
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
    • C10M2215/06—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to carbon atoms of six-membered aromatic rings
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/08—Amides
    • C10M2215/082—Amides containing hydroxyl groups; Alkoxylated derivatives
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/14—Containing carbon-to-nitrogen double bounds, e.g. guanidines, hydrazones, semicarbazones
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/22—Heterocyclic nitrogen compounds
    • C10M2215/223—Five-membered rings containing nitrogen and carbon only
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/10—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/02—Pour-point; Viscosity index
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/08—Resistance to extreme temperature
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/64—Environmental friendly compositions
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/14—Electric or magnetic purposes
    • C10N2040/16—Dielectric; Insulating oil or insulators

Definitions

  • the present invention relates to the use of compositions containing or consisting of mixed esters of polyhydric alcohols, which are esterified with fatty acids, partially unsaturated, from vegetable oils as a dielectric insulating liquid in aggregates of electric power engineering, such as transformers.
  • biodegradable vegetable oils have been proposed for use as insulating liquid in transformers. It is obvious to use vegetable oils as insulating liquid, since these are biologically light and completely degradable and i.d.R. not endangering water (according to German "administrative regulation water-polluting substances" - VwVwS) and possess a flame and focal point of more than 300 ° C (according to Pensky-Martens method), all at low raw material costs. In addition, these have a higher water absorption capacity compared to mineral oil, whereby the degradation of the cellulose of the transformer board is slowed down and the life of the transformer is increased.
  • Vegetable oils have been used as insulating oils since about the end of the 19th century. However, their use soon came to an end as they became relatively quickly oxidized by oxidation when used in transformers with access of air. Through the use of hermetically sealed transformers, which largely exclude the admission of air, the requirement profile has changed in recent years.
  • Oxidization sensitivity is still important, but not to the same extent as in old transformers, and is manageable in hermetically sealed transformers.
  • environmental awareness has increased significantly worldwide.
  • vegetable oils such as castor oil, sunflower oil, rapeseed oil, soybean oil, among others, have been proposed as transformer liquid in many cases, cf. WO 97/22977 A1 and US 6,340,658 B1 ,
  • the GB 1602092 discloses the use of trimethylolpropane esters of linear saturated fatty acids of 7 to 10 carbon atoms and their use as dielectric insulating liquid for transformers. From the examples, trimethylolpropane esters having a viscosity of 25 and 30 mm 2 / s, respectively at 30 ° C. and a focal point of 277 ° C. or 293 ° C., are known. A similar revelation content has the WO 2005/118756 A1 , However, this discloses broader linear or branched carboxylic acids having 6 to 12 carbon atoms. However, branched carboxylic acids are not natural fatty acids.
  • the WO 2006/074553 A1 discloses mixtures of TMP trioleate and TMP tricaprylates. These mixtures are mixtures of uniform esters (ester mixtures). The present inventors have found that ester mixtures have disadvantages compared to mixed esters, eg with regard to the flash point.
  • Mixed esters are esters which are already mixtures at the stage of the acid groups and are obtainable, for example, by reacting fatty acid mixtures with polyols.
  • the ester is composed of the acid groups R 1 to R 4 and the alcohol group.
  • the above percentages refer to the relative number of acid groups R 1 , R 2 , and so on, as far as they are related to the polyhydric alcohol (s) of the general formula are bound, which is is a mixed ester in which the acid groups R 1 and R 2 or R 1 to R 4 of an alcohol radical are present in any distribution. The percentages add up to 100 in total.
  • the fatty acids according to acid group R 1 or R 2 and R 3 are preferably accessible from natural fats as a mixture, for example from natural sources such as sunflower oil or rapeseed oil, preferably their high oleic acid variants.
  • the acid groups R 2 are accessible from fatty acids having a chain length of 6 to 12 C atoms, in particular 8 or 10 C atoms, for example as distillation cuts of vegetable oils such as coconut oil, palm kernel oil and the like.
  • the above-described mixed esters meet and exceed the requirements of DIN EN 61099 (see Table 1), i. in particular at the same time have a low viscosity, a low pour point (DIN ISO 3016), a high flash point according to Pensky-Martens (DIN ES ISO 2719,> 250 ° C) and a high focal point (DIN EN ISO 2592) and high oxidation stability.
  • DIN ISO 3016 low pour point
  • DIN ES ISO 2719,> 250 ° C a high flash point according to Pensky-Martens
  • DIN EN ISO 2592 high focal point
  • the dielectric insulating liquid according to the invention is, in particular, largely produced on the basis of renewable raw materials, such as e.g. to over 80 wt .-% (based on the reactants used for the synthesis).
  • the acid radical b) is obtainable from natural vegetable oils such as sunflower oil, rapeseed oil and the like, preferably their high-acid-acid variants.
  • natural vegetable oils such as sunflower oil, rapeseed oil and the like, preferably their high-acid-acid variants.
  • a high proportion of b) of oleic acid guarantees good cold properties at the same time great aging stability.
  • the fatty acid residues a) having a chain length of 6 to 12 carbon atoms, in particular 8 or 10 carbon atoms, are either likewise obtainable from vegetable oils such as coconut oil (for example as a distillation cut) or wholly or partly from synthetic sources.
  • the radicals R 2 are linear and preferably have 8 and / or 10 C atoms.
  • the low viscosity and in particular the low pour point can be achieved by selected acid components in the ester.
  • the mixed esters according to the invention thus show advantages over the prior art and represent an advance in the direction of the desired properties of a transformer oil.
  • the class of mixed trimethylolpropane triesters complies with DIN EN 61099 and has been classified as non-hazardous to water (NWG) by the Commission for the Assessment of Substances Hazardous to Water (VwVwS) in accordance with "Verwaltungsvorschrift wassergefährdende Stoffe (VwVwS)".
  • compositions of the invention exhibit good thermal properties and excellent dielectric properties.
  • antioxidants and / or metal deactivators and / or pour point depressants are possible and preferred to use antioxidants and / or metal deactivators and / or pour point depressants.
  • the metal deactivators are preferably selected from the following substances and mixtures of the listed substances: benzotriazoles and their derivatives, salicylaminoguanidine, toluene triazoles and their derivatives, 2-mercaptobenzothiazole, 2-mercaptobenzotriazole and / or salicylidene-propylenediamine and derivatives thereof.
  • the pour point depressants are preferably organic compounds such as diethylhexyl adipates, methacrylate polymers, polyvinyl acetates and their derivatives or / and mixtures of the listed substances.
  • the antifoam additives are preferably compounds such as polyethylene glycol ethers, amino alcohols, and / or ester-based additives.
  • the invention relates to the use of the compositions according to the invention containing the esters of the general formula I according to the above definition (s) as a dielectric insulating liquid in units of electrical power engineering, such as transformers.
  • the transformers are power transformers, distribution transformers, pole transformers, on-load tap-changers or switches.
  • the tert-butyl methyl ether was separated by means of a rotary evaporator. Residues of the solvent and free fatty acids were removed by short path distillation at 168 ° C and 2 * 10-2 mbar. The yield was 87%.

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  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Emergency Medicine (AREA)
  • Health & Medical Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Insulating Materials (AREA)
  • Lubricants (AREA)
  • Transformer Cooling (AREA)
  • Transformers For Measuring Instruments (AREA)
  • Fats And Perfumes (AREA)

Claims (15)

  1. Utilisation d'une composition comme fluide isolant diélectrique dans des groupes des technologies énergétiques électriques, dans laquelle la composition contient des ou consiste en esters de la formule générale I :
    avec
    Figure imgb0007
    R = méthyle, éthyle, propyle et/ou isopropyle ; et
    R1 = au moins 30 % de groupes acides saturés linéaires ayant 8 à 10 atomes de C ;
    R2 = au moins 20 % de groupes acides ayant 14 à 22 atomes de C présentant une ou plusieurs doubles liaisons, les restes R2 présentant à plus de 90 % 18 atomes de C et une double liaison et le cas échéant
    R3 = 0 jusqu'à au maximum 20 % de groupes acides saturés linéaires ayant 14 à 22 atomes de C, et le cas échéant
    R4 = 0 jusqu'à au maximum 20 % d'autres groupes acides indépendamment de R1, R2 et le cas échéant R3,
    les restes R1 et R2 se situant dans un rapport numérique de R1 à R2 de 1 à 1 à 5 à 1, et
    les esters étant des esters mixtes.
  2. Utilisation selon la revendication 1, dans laquelle la composition présente simultanément une viscosité de < 35 mm2/s à 40°C, un point d'écoulement inférieur à -50°C et un point d'inflammation supérieur à 250°C et en outre en particulier un point de combustion supérieur à 250°C, le point d'écoulement étant mesuré selon DIN ISO 3016, le point d'inflammation, selon DIN ISO 2719 et le point de combustion, selon DIN ISO 2592.
  3. Utilisation selon au moins l'une des revendications précédentes, dans laquelle les restes R2 présentent à plus de 95 % 18 atomes de C et une double liaison.
  4. Utilisation selon au moins l'une des revendications précédentes, dans laquelle les restes R2 présentent à plus de 80 % au moins une double liaison à configuration cis.
  5. Utilisation selon la revendication 2, dans laquelle la composition présente en outre un point de combustion supérieur à 250°C selon DIN ISO 2592.
  6. Utilisation selon au moins l'une des revendications précédentes, dans laquelle la composition contient en outre un ou plusieurs éléments du groupe suivant :
    • 0,01 à 3 % en poids d'au moins un anti-oxydant ;
    • 0,01 à 1,0 % en poids d'au moins un désactivateur de métaux ;
    • 0,1 à 5 % en poids d'au moins un agent d'abaissement de point d'écoulement ;
    • 0,01 à 2 % en poids d'au moins un agent anti-mousse, dans chaque cas par rapport à l'ester/aux esters.
  7. Utilisation selon la revendication 6, dans laquelle l'anti-oxydant/les anti-oxydants sont choisis parmi un ou plusieurs éléments du groupe comprenant les anti-oxydants phénoliques, les anti-oxydants aminés, les tocophérols et les gallates.
  8. Utilisation selon la revendication 6, dans laquelle le/les désactivateurs de métaux sont choisis parmi un ou plusieurs éléments du groupe comprenant les benzotriazoles et leurs dérivés, la salicylaminoguanidine, les toluènetriazoles et leurs dérivés, le 2-mercaptobenzothiazole, le 2-mercaptobenzotriazole et la salicylidène-propylènediamine et leurs dérivés.
  9. Utilisation selon la revendication 6, dans laquelle le/les agents d'abaissement du point d'écoulement sont choisis parmi un ou plusieurs éléments du groupe comprenant les adipates de diéthylhexyle, les polymères de méthacrylate, les poly(acétates de vinyle) et leurs dérivés respectifs.
  10. Utilisation selon la revendication 6, dans laquelle le/les additifs anti-mousse sont choisis parmi un ou plusieurs éléments du groupe comprenant les éthers de polyalkylèneglycol, les amino alcools et les additifs à base d'esters.
  11. Utilisation selon au moins l'une des revendications précédentes, dans laquelle la composition est constituée à plus de 70 % en poids, de préférence à plus de 85 % en poids, en particulier à plus de 95 % en poids, et de manière particulièrement préférée à plus de 98 % en poids, exclusivement d'esters selon l'une des revendications 1 à 5.
  12. Utilisation selon au moins l'une des revendications précédentes, dans laquelle
    R2 = pour au moins 30 % des groupes acides ayant 14 à 22 atomes de C présentant une ou plusieurs doubles liaisons et les restes R2 présentant, à plus de 90 %, 18 atomes de C et une double liaison.
  13. Utilisation selon au moins l'une des revendications précédentes, dans laquelle les restes R1 et R2 se trouvent dans un rapport numérique de R1 à R2 de 1 à 1 à 2 à 1.
  14. Utilisation selon au moins l'une des revendications précédentes ayant indépendamment les uns des autres
    R = éthyle,
    R1 = au moins 50 % de groupes acides saturés linéaires ayant 8 à 10 atomes de C ;
    R2 = au moins 20 % de groupes acides ayant 14 à 22 atomes de C présentant une ou plusieurs doubles liaisons, les restes R2 présentant à plus de 90 %, 18 atomes de C et une double liaison ; et
    R3 1 jusqu'à au maximum 10 % de groupes acides saturés linéaires ayant 14 à 22 atomes de C, et le cas échéant
    R4 0 jusqu'à au maximum 10 % d'autres groupes acides indépendamment de R1, R2 et le cas échéant R3.
  15. Utilisation selon la revendication 1, dans laquelle les groupes sont des transformateurs de puissance, des transformateurs de distribution, des transformateurs de pylône, des convertisseurs de courant et de tension ainsi que des changeurs de prises en charge ou des inverseurs.
EP13726667.2A 2012-04-26 2013-04-26 Utilisation d'ester mixte comme liquide d'isolation diélectrique Active EP2841539B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012103701A DE102012103701A1 (de) 2012-04-26 2012-04-26 Ester als Kühl- und Isolierflüssigkeiten für Transformatoren
PCT/DE2013/000222 WO2013159761A1 (fr) 2012-04-26 2013-04-26 Esters utilisés comme fluides de refroidissement et diélectriques liquides pour des transformateurs

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EP2841539A1 EP2841539A1 (fr) 2015-03-04
EP2841539B1 true EP2841539B1 (fr) 2017-10-25

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EP13726667.2A Active EP2841539B1 (fr) 2012-04-26 2013-04-26 Utilisation d'ester mixte comme liquide d'isolation diélectrique

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US (1) US9666328B2 (fr)
EP (1) EP2841539B1 (fr)
JP (1) JP6166354B2 (fr)
CN (1) CN104271716B (fr)
AU (1) AU2013252181B2 (fr)
BR (1) BR112014026490B1 (fr)
CA (1) CA2869867C (fr)
DE (1) DE102012103701A1 (fr)
ES (1) ES2656071T3 (fr)
NO (1) NO2883278T3 (fr)
WO (1) WO2013159761A1 (fr)

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DE102012103701A1 (de) 2012-04-26 2013-10-31 Fuchs Petrolub Ag Ester als Kühl- und Isolierflüssigkeiten für Transformatoren
KR102447616B1 (ko) * 2014-06-26 2022-09-28 다우 글로벌 테크놀로지스 엘엘씨 포화된-이량체-산-디에스테르 유전체 유체
CN104212549A (zh) * 2014-08-13 2014-12-17 铜陵日科电子有限责任公司 一种添加松焦油抗氧化腐蚀的纳米氮化铝变压器油及其制备方法
DE102014116853B3 (de) * 2014-11-18 2016-01-07 IPS-Fest GmbH Stromgleichrichter mit geschlossenem Kühlkreislauf
JP6502131B2 (ja) * 2015-03-13 2019-04-17 ミヨシ油脂株式会社 潤滑油基剤及びそれを含む水性潤滑油
WO2016198668A1 (fr) * 2015-06-12 2016-12-15 Novamont S.P.A. Esters de triméthylolpropane à faible point d'écoulement
CN110655970A (zh) * 2019-10-21 2020-01-07 中国石油化工股份有限公司 一种可生物降解变压器油及其制备方法
EP4294786A1 (fr) 2021-11-17 2023-12-27 Evonik Operations GmbH Compositions de fluide diélectrique comprenant des monoesters de faible viscosité présentant des performances à basse température améliorée

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Publication number Publication date
BR112014026490B1 (pt) 2020-11-17
WO2013159761A1 (fr) 2013-10-31
JP2015521341A (ja) 2015-07-27
CN104271716B (zh) 2017-03-22
AU2013252181A1 (en) 2014-11-20
CN104271716A (zh) 2015-01-07
BR112014026490A2 (pt) 2017-06-27
ES2656071T3 (es) 2018-02-23
US20150090944A1 (en) 2015-04-02
AU2013252181B2 (en) 2017-03-16
NO2883278T3 (fr) 2018-04-14
CA2869867A1 (fr) 2013-10-31
CA2869867C (fr) 2017-08-08
JP6166354B2 (ja) 2017-07-19
EP2841539A1 (fr) 2015-03-04
US9666328B2 (en) 2017-05-30
DE102012103701A1 (de) 2013-10-31

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