JPS63310502A - Electric insulating oil - Google Patents
Electric insulating oilInfo
- Publication number
- JPS63310502A JPS63310502A JP14763087A JP14763087A JPS63310502A JP S63310502 A JPS63310502 A JP S63310502A JP 14763087 A JP14763087 A JP 14763087A JP 14763087 A JP14763087 A JP 14763087A JP S63310502 A JPS63310502 A JP S63310502A
- Authority
- JP
- Japan
- Prior art keywords
- ester
- component
- fatty acid
- insulating oil
- electrical insulating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 150000002148 esters Chemical class 0.000 claims abstract description 49
- 235000014113 dietary fatty acids Nutrition 0.000 claims abstract description 21
- 239000000194 fatty acid Substances 0.000 claims abstract description 21
- 229930195729 fatty acid Natural products 0.000 claims abstract description 21
- 239000000203 mixture Substances 0.000 claims abstract description 18
- -1 fatty acid ester Chemical class 0.000 claims abstract description 17
- 150000004665 fatty acids Chemical class 0.000 claims abstract description 15
- TXBCBTDQIULDIA-UHFFFAOYSA-N 2-[[3-hydroxy-2,2-bis(hydroxymethyl)propoxy]methyl]-2-(hydroxymethyl)propane-1,3-diol Chemical compound OCC(CO)(CO)COCC(CO)(CO)CO TXBCBTDQIULDIA-UHFFFAOYSA-N 0.000 claims abstract description 10
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 claims abstract description 8
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000010735 electrical insulating oil Substances 0.000 claims description 29
- 229920005862 polyol Polymers 0.000 claims description 10
- 125000004432 carbon atom Chemical group C* 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 2
- 229910052799 carbon Inorganic materials 0.000 abstract 2
- 239000003989 dielectric material Substances 0.000 abstract 1
- 229940060184 oil ingredients Drugs 0.000 description 9
- 239000003921 oil Substances 0.000 description 8
- 235000019198 oils Nutrition 0.000 description 8
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 7
- 239000003063 flame retardant Substances 0.000 description 7
- 238000003912 environmental pollution Methods 0.000 description 6
- 238000002360 preparation method Methods 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 5
- 239000002253 acid Substances 0.000 description 5
- 230000018044 dehydration Effects 0.000 description 5
- 238000006297 dehydration reaction Methods 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- POULHZVOKOAJMA-UHFFFAOYSA-N dodecanoic acid Chemical compound CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- MNWFXJYAOYHMED-UHFFFAOYSA-N heptanoic acid Chemical compound CCCCCCC(O)=O MNWFXJYAOYHMED-UHFFFAOYSA-N 0.000 description 4
- 239000002480 mineral oil Substances 0.000 description 4
- 229920002545 silicone oil Polymers 0.000 description 4
- 230000002194 synthesizing effect Effects 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 150000004996 alkyl benzenes Chemical class 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 238000010992 reflux Methods 0.000 description 3
- TXUICONDJPYNPY-UHFFFAOYSA-N (1,10,13-trimethyl-3-oxo-4,5,6,7,8,9,11,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthren-17-yl) heptanoate Chemical compound C1CC2CC(=O)C=C(C)C2(C)C2C1C1CCC(OC(=O)CCCCCC)C1(C)CC2 TXUICONDJPYNPY-UHFFFAOYSA-N 0.000 description 2
- OBETXYAYXDNJHR-SSDOTTSWSA-M (2r)-2-ethylhexanoate Chemical compound CCCC[C@@H](CC)C([O-])=O OBETXYAYXDNJHR-SSDOTTSWSA-M 0.000 description 2
- OEOIWYCWCDBOPA-UHFFFAOYSA-N 6-methyl-heptanoic acid Chemical compound CC(C)CCCCC(O)=O OEOIWYCWCDBOPA-UHFFFAOYSA-N 0.000 description 2
- OAOABCKPVCUNKO-UHFFFAOYSA-N 8-methyl Nonanoic acid Chemical compound CC(C)CCCCCCC(O)=O OAOABCKPVCUNKO-UHFFFAOYSA-N 0.000 description 2
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 239000005639 Lauric acid Substances 0.000 description 2
- AFVFQIVMOAPDHO-UHFFFAOYSA-N Methanesulfonic acid Chemical compound CS(O)(=O)=O AFVFQIVMOAPDHO-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 229910021626 Tin(II) chloride Inorganic materials 0.000 description 2
- OBETXYAYXDNJHR-UHFFFAOYSA-N alpha-ethylcaproic acid Natural products CCCCC(CC)C(O)=O OBETXYAYXDNJHR-UHFFFAOYSA-N 0.000 description 2
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- GHVNFZFCNZKVNT-UHFFFAOYSA-N decanoic acid Chemical compound CCCCCCCCCC(O)=O GHVNFZFCNZKVNT-UHFFFAOYSA-N 0.000 description 2
- 150000005690 diesters Chemical class 0.000 description 2
- 239000010696 ester oil Substances 0.000 description 2
- 235000010446 mineral oil Nutrition 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- FBUKVWPVBMHYJY-UHFFFAOYSA-N nonanoic acid Chemical compound CCCCCCCCC(O)=O FBUKVWPVBMHYJY-UHFFFAOYSA-N 0.000 description 2
- WWZKQHOCKIZLMA-UHFFFAOYSA-N octanoic acid Chemical compound CCCCCCCC(O)=O WWZKQHOCKIZLMA-UHFFFAOYSA-N 0.000 description 2
- 150000003014 phosphoric acid esters Chemical class 0.000 description 2
- 150000003071 polychlorinated biphenyls Chemical class 0.000 description 2
- 239000001119 stannous chloride Substances 0.000 description 2
- 235000011150 stannous chloride Nutrition 0.000 description 2
- ZDPHROOEEOARMN-UHFFFAOYSA-N undecanoic acid Chemical compound CCCCCCCCCCC(O)=O ZDPHROOEEOARMN-UHFFFAOYSA-N 0.000 description 2
- QJRRBVNPIKYRQJ-UHFFFAOYSA-N 10-methylundecanoic acid Chemical compound CC(C)CCCCCCCCC(O)=O QJRRBVNPIKYRQJ-UHFFFAOYSA-N 0.000 description 1
- HFWHTGSLDKKCMD-UHFFFAOYSA-N 2,2-bis(octanoyloxymethyl)butyl octanoate Chemical compound CCCCCCCC(=O)OCC(CC)(COC(=O)CCCCCCC)COC(=O)CCCCCCC HFWHTGSLDKKCMD-UHFFFAOYSA-N 0.000 description 1
- ALKCLFLTXBBMMP-UHFFFAOYSA-N 3,7-dimethylocta-1,6-dien-3-yl hexanoate Chemical group CCCCCC(=O)OC(C)(C=C)CCC=C(C)C ALKCLFLTXBBMMP-UHFFFAOYSA-N 0.000 description 1
- XZOYHFBNQHPJRQ-UHFFFAOYSA-N 7-methyloctanoic acid Chemical compound CC(C)CCCCCC(O)=O XZOYHFBNQHPJRQ-UHFFFAOYSA-N 0.000 description 1
- 239000005632 Capric acid (CAS 334-48-5) Substances 0.000 description 1
- 239000005635 Caprylic acid (CAS 124-07-2) Substances 0.000 description 1
- 239000005643 Pelargonic acid Substances 0.000 description 1
- 239000003377 acid catalyst Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 231100000693 bioaccumulation Toxicity 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- ZFMQKOWCDKKBIF-UHFFFAOYSA-N bis(3,5-difluorophenyl)phosphane Chemical compound FC1=CC(F)=CC(PC=2C=C(F)C=C(F)C=2)=C1 ZFMQKOWCDKKBIF-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000004042 decolorization Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910001510 metal chloride Inorganic materials 0.000 description 1
- 229940098779 methanesulfonic acid Drugs 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 description 1
- 229960002446 octanoic acid Drugs 0.000 description 1
- 239000004006 olive oil Substances 0.000 description 1
- 235000008390 olive oil Nutrition 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 150000004671 saturated fatty acids Chemical class 0.000 description 1
- 235000003441 saturated fatty acids Nutrition 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- HPGGPRDJHPYFRM-UHFFFAOYSA-J tin(iv) chloride Chemical compound Cl[Sn](Cl)(Cl)Cl HPGGPRDJHPYFRM-UHFFFAOYSA-J 0.000 description 1
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
- QXJQHYBHAIHNGG-UHFFFAOYSA-N trimethylolethane Chemical compound OCC(C)(CO)CO QXJQHYBHAIHNGG-UHFFFAOYSA-N 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は電気絶縁油に関し、詳しくは難燃性、電気特性
に優れ、かつ環境を汚染する恐れの少ない電気絶縁油に
関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electrical insulating oil, and more particularly to an electrical insulating oil that has excellent flame retardancy and electrical properties, and is less likely to pollute the environment.
最近、電気絶縁油の保持すべき性能として、難燃性であ
ることが重視されている。ＰＣＢ （ポリ塩化ビフェニ
ール）の使用が難しくなって以来、難燃性の優れた電気
絶縁油としてはシリコーン油が注目されてきた。しかし
、シリコーン油は比誘電率が小さく、また高価であると
いう欠点がある。Recently, flame retardancy has been emphasized as a performance that electrical insulating oils should maintain. Since it became difficult to use PCB (polychlorinated biphenyls), silicone oil has attracted attention as an electrical insulating oil with excellent flame retardancy. However, silicone oil has the drawbacks of having a low dielectric constant and being expensive.
一方、ジオクチルフタレートやジオクチルアジペートと
いったジエステル類は比誘電率は大きいが、引火点が鉱
物油やアルキルベンゼンのように低く難燃性とは言い難
い。同じエステル油でもネオペンチルポリオールエステ
ルはジエステルに比べて熱酸化安定性に優れ、引火点が
高いものとして知られている。On the other hand, diesters such as dioctyl phthalate and dioctyl adipate have a high dielectric constant, but their flash points are low like mineral oils and alkylbenzenes, so they cannot be called flame retardant. Even among ester oils, neopentyl polyol ester is known to have superior thermal oxidative stability and a higher flash point than diester.
一例として、特開昭５３−１１２４９８号公報には、ト
リメチロールプロパントリカプリレートなどを難燃性電
気絶縁油として使用することが開示されている。しかし
、それでも引火点は２５０℃以下であり、十分なものと
はいえない、構成脂肪酸の炭素数を大きくするとエステ
ルの引火点は高くなるが、同時に流動点も高（なるため
電気絶縁油としては適当でない。As an example, JP-A-53-112498 discloses the use of trimethylolpropane tricaprylate as a flame-retardant electrical insulating oil. However, the flash point is still below 250℃, which is not sufficient.If the number of carbon atoms in the constituent fatty acids is increased, the flash point of the ester becomes higher, but at the same time, the pour point also becomes higher (so it is not suitable as an electrical insulating oil. It's not appropriate.
また、特開昭５８−９３１０５号公報や特公昭６１−６
１４８２号公報にはネオペンチルポリオールエステルと
リン酸エステルとの混合物を電気絶縁油として使用する
ことが開示されている。これらは難燃性に優れたもので
あるが、リン酸エステルは環境汚染の問題があり、廃棄
が困難であるため、取り扱いの点で難がある。Also, Japanese Patent Publication No. 58-93105 and Japanese Patent Publication No. 61-6
Publication No. 1482 discloses the use of a mixture of neopentyl polyol ester and phosphoric acid ester as an electrical insulating oil. Although these have excellent flame retardancy, phosphate esters are difficult to handle because they cause environmental pollution and are difficult to dispose of.
このように、従来公知の電気絶縁油は、難燃性（引火点
）、電気特性（比誘電率）、流動点および環境汚染のう
ちのいずれかに問題を有し、これらをすべて満足するも
゛のはほとんど見い出されていない。As described above, conventionally known electrical insulating oils have problems with flame retardancy (flash point), electrical properties (relative dielectric constant), pour point, and environmental pollution, and none that satisfy all of these problems.゛ has hardly been found.
したがって、本発明は、上記の性状、性能をすべて満足
する難燃性電気絶縁油を得ること、すなわち、引火点か
高＜（２５０℃以上）、流動点が低く（−３０℃以下）
、電気特性に優れ（比誘電率４．０以上）、かつ環境汚
染の恐れの少ない電気絶縁油を得ることを目的としてい
る。Therefore, the present invention aims to obtain a flame-retardant electrical insulating oil that satisfies all of the above properties and performance, that is, the flash point is high (250°C or higher) and the pour point is low (-30°C or lower).
The purpose of the present invention is to obtain an electrical insulating oil that has excellent electrical properties (relative dielectric constant of 4.0 or more) and is less likely to cause environmental pollution.
本発明者らは、上記の目的を達成するために鋭意検討し
た結果、従来用いられたことのない特定のネオペンチル
ポリオールエステルとしてジペンタエリスリトールの脂
肪酸エステルを単独で用いるか、あるいはこれとその他
のネオペンチルポリオールの脂肪酸エステルと混合して
用いることにより、引火点か高くかつ流動点が低いうえ
に、電気特性に優れ（比誘電率４．０以上）、シかも環
境汚染の恐れの少ない難燃性電気絶縁油が得られるもの
であることを知り、本発明を完成するに至った。As a result of intensive studies to achieve the above object, the present inventors decided to use fatty acid ester of dipentaerythritol alone as a specific neopentyl polyol ester that had never been used before, or to use this and other fatty acid esters. By mixing neopentyl polyol with fatty acid ester, it has a high flash point, low pour point, excellent electrical properties (relative dielectric constant of 4.0 or more), and is flame retardant with little risk of environmental pollution. This led to the completion of the present invention.
すなわち、本発明は、
Ａ）ジペンタエリスリトールと炭素数７〜１２の脂肪酸
とからなるエステル
単独か、またはこれと
Ｂ）その他のネオペンチルポリオールと炭素数７〜１２
の脂肪酸とからなるエステル
との混合物からなる、その引火点が２５０℃以上、流動
点が一３０℃以下である電気絶縁油に係るものである。That is, the present invention provides: A) an ester consisting of dipentaerythritol and a fatty acid having 7 to 12 carbon atoms alone, or this and B) another neopentyl polyol and a fatty acid having 7 to 12 carbon atoms.
The electrical insulating oil has a flash point of 250°C or higher and a pour point of 130°C or lower, which is made of a mixture of a fatty acid and an ester of
本発明に係るＡ成分のエステルを得るためのジペンタエ
リスリトールは、ペンタエリスリトール。Dipentaerythritol for obtaining the ester of component A according to the present invention is pentaerythritol.
二分子の脱水縮合物であり、ペンタエリスリトールを溶
媒中に分散して触媒の存在下に約１８０℃で反応するこ
とにより得られる。市販品を用いることもでき、例とし
てジペンタリット（広栄化学■製）がある。It is a bimolecular dehydration condensate and is obtained by dispersing pentaerythritol in a solvent and reacting it at about 180°C in the presence of a catalyst. Commercially available products can also be used, such as Dipentalit (manufactured by Koei Kagaku ■).
本発明に係るＢ成分のエステルを得るためのその他のネ
オペンチルポリオールとしてはペンタエリスリトール、
トリメチロールエタン、トリメチロールプロパン、ネオ
ペンチルグリコールなどがあり、生成するエステルの引
火点や電気特性を考慮するとペンタエリスリトール、ト
リメチロールプロパンが好ましい。Other neopentyl polyols for obtaining the ester of component B according to the present invention include pentaerythritol,
Examples include trimethylolethane, trimethylolpropane, and neopentyl glycol, with pentaerythritol and trimethylolpropane being preferred in consideration of the flash point and electrical properties of the ester produced.
本発明に係るＡ成分およびＢ成分の両エステルを得るた
めの脂肪酸は、炭素数７〜１２の直鎖または分枝の飽和
脂肪酸である０例としては、エナント酸、イソへブタン
酸、カプリル酸、２−エチルヘキサン酸、イソオクタン
酸、ペラルゴン酸、イソノナン酸、カプリン酸、イソデ
カン酸、ウンデカン酸、ラウリン酸、イソドデカン酸な
どである。これらの脂肪酸はエステルの合成に際して単
品、混合物のいずれの形で用いてもよい、炭素数を限定
したのは、炭素数が６以下であると生成するエステルの
引火点が低くなり、１３以上であると流動点が高くなっ
て好ましくないためである。The fatty acids for obtaining both esters of component A and component B according to the present invention are straight chain or branched saturated fatty acids having 7 to 12 carbon atoms. Examples include enanthic acid, isohbutanoic acid, caprylic acid. , 2-ethylhexanoic acid, isooctanoic acid, pelargonic acid, isononanoic acid, capric acid, isodecanoic acid, undecanoic acid, lauric acid, isododecanoic acid, and the like. These fatty acids may be used either singly or as a mixture when synthesizing esters.The reason for limiting the number of carbon atoms is that if the number of carbon atoms is 6 or less, the flash point of the ester produced will be low; This is because if it is present, the pour point will become high, which is undesirable.
本発明に係るＡ成分のエステルは、ジペンタエリスリト
ールと脂肪酸とを、硫酸、アルキルスルホン酸などの強
酸触媒や塩化スズや塩化チタンなどの金属塩化物触媒の
存在下、通常の方法でエステル化することにより製造で
きる。また、通常のエステルを精製する場合と同様に、
脱酸、水洗、脱水、脱色、ろ過などの一連の処理により
精製できる。本発明に係るＢ成分のエステルについても
、アルコールとして前記したその他のネオペンチルポリ
オールを用いる以外は、上記と同様にして製造でき、ま
た精製できる。The ester of component A according to the present invention is produced by esterifying dipentaerythritol and fatty acid in the presence of a strong acid catalyst such as sulfuric acid or alkyl sulfonic acid or a metal chloride catalyst such as tin chloride or titanium chloride. It can be manufactured by Also, as in the case of refining ordinary esters,
It can be purified through a series of treatments such as deacidification, water washing, dehydration, decolorization, and filtration. The ester of component B according to the present invention can also be produced and purified in the same manner as described above, except that the other neopentyl polyols described above are used as the alcohol.
本発明の電気ｖＡ縁油は、上記のＡ成分のエステルを単
独で用いるか、あるいはこれとＢ成分のエステルとを混
合して用いたものであり、いずれの場合もその引火点が
２５０℃以上、流動点が一３０℃以下であることを特徴
としており、電気特性としては比誘電率が４．０以上と
なるものである。The electric vA edge oil of the present invention uses the above-mentioned ester of component A alone or in combination with the ester of component B, and in either case, the flash point is 250°C or higher. It is characterized by a pour point of 130° C. or lower, and its electrical properties include a dielectric constant of 4.0 or higher.
なお、エステルを構成する脂肪酸の種類によっては、ま
たＡ成分のエステルとＢ成分のエステルとの混合物とす
る場合にその混合比率によっては、エステルの引火点が
２５０℃未満または流動点が一３０℃を超えることもあ
りうるが、これは本発明の対象外である。In addition, depending on the type of fatty acid constituting the ester, or depending on the mixing ratio of the ester of component A and the ester of component B, the flash point of the ester may be less than 250°C or the pour point may be less than 130°C. However, this is outside the scope of the present invention.
本発明の電気絶縁油のうち、Ａ成分のエステルとＢ成分
のエステルとの混合物を得るには、それぞれを別個に製
造して混合してもよいし、あるいは予めアルコールとし
てのジペンタエリスリトールとその他のネオペンチルポ
リオールとを混合し、これと脂肪酸とを反応させて混合
エステルを製造するようにしてもよい、これらの混合物
において、混合物中に占めるＡ成分のエステルの割合は
５０重量％以上であるのが望ましい。この割合が少なす
ぎると、混合物の引火点が低く、比誘電率が小さくなる
傾向があり、難燃性の電気絶縁油として適当でないから
である。In order to obtain a mixture of the ester of component A and the ester of component B of the electrical insulating oil of the present invention, each may be manufactured separately and mixed, or dipentaerythritol as an alcohol and other A mixed ester may be produced by mixing Neopentyl polyol with a fatty acid and reacting this with a fatty acid. In these mixtures, the proportion of the ester of component A in the mixture is 50% by weight or more. is desirable. If this ratio is too small, the flash point of the mixture tends to be low and the dielectric constant tends to be low, making it unsuitable as a flame-retardant electrical insulating oil.
以上のように、本発明によれば、引火点が高く（２５０
℃以上）、流動点が低く（−３０℃以下）、シかも電気
特性に優れ（比誘電率４．０以上）、そのうえ環境汚染
の恐れの少ない難燃性の電気絶縁油を捷供できる。すな
わち、本発明の電気絶縁油は、この種絶縁油に望まれる
性状、性能をすべて保持しており、アルキルベンゼン、
シリコーン油、高引火点鉱油および従来のエステル油に
代わる難燃性の電気絶縁油として広く利用できる。As described above, according to the present invention, the flash point is high (250
℃ or higher), has a low pour point (-30℃ or lower), has excellent electrical properties (relative dielectric constant of 4.0 or higher), and has a flame retardant electrical insulating oil that is less likely to cause environmental pollution. That is, the electrical insulating oil of the present invention retains all the properties and performance desired for this type of insulating oil, and contains alkylbenzene,
It can be widely used as a flame retardant electrical insulation oil to replace silicone oils, high flash point mineral oils and traditional ester oils.
つぎに、本発明を実施例に基づきより具体的に説明する
。Next, the present invention will be explained in more detail based on Examples.
実施例
つぎの第１表に示すＡ成分のエステル（Ａｌ〜Ａ、）ま
たはこれとつぎの第２表に示すＢ成分のエステル（Ｂ＋
＝Ｂｉ）とを用いて、第３表に示す組成からなる試料番
号１〜１０の本発明の電気絶縁油を調製した。Examples The esters of component A (Al~A,) shown in Table 1 below or the esters of component B (B+) shown in Table 2 below
= Bi) to prepare electrical insulating oils of the present invention having sample numbers 1 to 10 having the compositions shown in Table 3.
なお、試料番号１．８の電気絶縁油の調製は、下記のく
試料番号１の調製）にて例示されるように、Ａ成分のエ
ステルとＢ成分のエステルとを同一反応系内で同時に合
成する方式で行った。また、試料番号２，４〜７．９の
電気絶縁油の調製は、下記のく試料番号２の調製）にて
例示されるように、Ａ成分のエステルとＢ成分のエステ
ルとをそれぞれ別々に合成したのち、両者を混合する方
式で行った。さらに、試料番号３．１０の電気絶縁油は
、下記のく試料番号２の調製〉におけるＡ成分のエステ
ルを合成する方法に準じて相当する上記エステルを合成
し、これをそれ単独で電気絶縁油としたものである。The electrical insulating oil of sample number 1.8 was prepared by simultaneously synthesizing the ester of component A and the ester of component B in the same reaction system, as exemplified in the following (Preparation of sample number 1). I did it in this way. In addition, for the preparation of electrical insulating oils of sample numbers 2, 4 to 7.9, as exemplified in (Preparation of sample number 2) below, the ester of component A and the ester of component B are separately prepared. After synthesis, the two were mixed together. Furthermore, the electrical insulating oil of sample number 3.10 was obtained by synthesizing the corresponding ester according to the method for synthesizing the ester of component A in the preparation of sample number 2 below, and using it alone as an electrical insulating oil. That is.
く試料番号１の調製〉
還流装置付きのＩＥのガラス反応器に、ジペンタエリス
リトール１５４．７ｇ （０，６０９モル）、ペンタエ
リスリトール１４．６ ｇ （０，１０７モル）およ
びエナント酸５５７．２ｇ（４，２９モル）を入れ、０
．３重量％のメタンスルホン酸を加えて窒素気流下１３
０℃で８時間反応し、アルカリ脱酸、水洗、脱水、ろ過
の工程を経て酸価０．０３の混合エステル、つまり第１
表に示されるエステルＡ。Preparation of Sample No. 1> In an IE glass reactor equipped with a reflux device, 154.7 g (0,609 mol) of dipentaerythritol, 14.6 g (0,107 mol) pentaerythritol, and 557.2 g ( 4,29 mol) and 0
．． Add 3% by weight of methanesulfonic acid and add 13% by weight under nitrogen stream.
After reacting at 0°C for 8 hours and going through the steps of alkaline deacidification, water washing, dehydration, and filtration, a mixed ester with an acid value of 0.03, that is, the first
Ester A shown in the table.
と第２表に示されるエステルＢ、との重量比９：１の混
合物からなる試料番号１の電気絶縁油を得た。and Ester B shown in Table 2 in a weight ratio of 9:1, sample No. 1 electrical insulating oil was obtained.
く試料番号２の調製ン
還流装置付きの１１のガラス反応器にジペンタエリスリ
トール１６２．４ｇ （０，６３９モル）、エナント酸
３９２．６ ｇ （３，０２モル）およびイソオクタン
酸１４５．０ｇ （１，０１モル）を入れ、０．３重量
％の塩化第一スズを加えて窒素ガス気流下２２０℃で１
０時間反応し、アルカリ脱酸、水洗、脱水、ろ過の工程
を経て酸価０．０４のエステル、つまり第１表に示され
るエステルＡ２を得た。Preparation of Sample No. 2 Into an 11 glass reactor equipped with a reflux device were added 162.4 g (0,639 mol) of dipentaerythritol, 392.6 g (3,02 mol) of enanthic acid and 145.0 g (1 mol) of isooctanoic acid. , 01 mol) was added, 0.3% by weight of stannous chloride was added, and the mixture was heated at 220°C under a nitrogen gas stream.
After reacting for 0 hours, an ester with an acid value of 0.04, that is, ester A2 shown in Table 1, was obtained through the steps of alkali deacidification, water washing, dehydration, and filtration.
これとは別に、還流装置付きの１１のガラス反応器に、
ペンタエリスリトール１１７．４ ｇ （０，８６３モ
ル）、２−エチルへキサン酸４１０．１ｇ（２，８４８
モル）およびラウリン酸１７２．６ｇ（０゜８６３モル
）を入れ、０．３重量％の塩化第一スズを加えて窒素気
流下２２０℃で１０時間反応し、アルカリ脱酸、水洗、
脱水、ろ過の工程を経て酸価０．０３のエステル、つま
り第２表に示されるエステルＢ、を得た。Separately, 11 glass reactors with reflux equipment were
Pentaerythritol 117.4 g (0,863 mol), 2-ethylhexanoic acid 410.1 g (2,848 mol)
mol) and 172.6 g (0°863 mol) of lauric acid were added, 0.3% by weight of stannous chloride was added, and the mixture was reacted at 220°C for 10 hours under a nitrogen stream, followed by alkaline deoxidation, water washing,
Through the steps of dehydration and filtration, an ester with an acid value of 0.03, that is, ester B shown in Table 2 was obtained.
上記のエステルＡ２と上記のエステルＢ、とを重量比が
８：２となるように混合して、試料番号２の電気絶縁油
を得た。The above ester A2 and the above ester B were mixed at a weight ratio of 8:2 to obtain electrical insulating oil of sample number 2.
比較例 つぎの第１表に示すＡ成分のエステル（Ａ！。Comparative example The ester of component A shown in Table 1 below (A!.
Ａｂ）、つぎの第２表に示すＢ成分のエステル（Ｂ＋、
Ｂｂ）および従来公知の電気！！Ｉ縁油酸油成分いて、
第３表に示す組成からなる試料番号１１〜１８の比較用
の電気絶縁油を得た。Ab), the ester of component B shown in Table 2 below (B+,
Bb) and conventionally known electricity! ! Contains I-rimmed oil and acid oil ingredients,
Comparative electrical insulating oils of sample numbers 11 to 18 having the compositions shown in Table 3 were obtained.
なお、第３表中、従来公知の電気絶縁油成分であるｒＤ
ＩＤＡＪは新日本理化特製のジイソデシルアジペート、
同ｒＤＯＰＪは新日本理化特製のジオクチルフタレート
、同「シリコーン油」は信越シリコーン特製のＫＦ−９
６、同「アルキルベンゼン系電気ｖＡ縁油」は日本石油
特製の日石コンデンサーオイルＳ、同ｒＲＴＥｍｐ
Ｆｌｕｉｄ」はＲＴＥ社製の高引火点鉱油、である。In addition, in Table 3, rD, which is a conventionally known electrical insulating oil component,
IDAJ is diisodecyl adipate specially manufactured by New Japan Chemical,
The rDOPJ is dioctyl phthalate manufactured by New Japan Rika, and the "silicone oil" is KF-9 manufactured by Shin-Etsu Silicone.
6. The "alkylbenzene-based electric vA rim oil" is Nippon Oil's special Nippon Oil Condenser Oil S, and the same rRTEmp.
"Fluid" is a high flash point mineral oil manufactured by RTE.
以上の実施例および比較例に係る各電気絶縁油につき、
その引火点、流動点、４０℃での動粘度および８０℃で
の比誘電率を調べた。その結果は第３表に併記されると
おりであった。For each electrical insulating oil related to the above examples and comparative examples,
Its flash point, pour point, kinematic viscosity at 40°C and dielectric constant at 80°C were investigated. The results were as shown in Table 3.
第１表
第２表
上記第３表の結果から明らかなように、本発明品はいず
れも引火点が２５０℃以上、流動点が一３０℃以下で、
しかも比誘電率は４．０以上である。As is clear from the results in Table 1, Table 2, and Table 3 above, all of the products of the present invention have a flash point of 250°C or higher, a pour point of 130°C or lower, and
Moreover, the dielectric constant is 4.0 or more.
これに対し、比較品は上記性能のうちのいずれかが劣っ
ている。On the other hand, the comparative product is inferior in any of the above performances.
また、本発明品の動粘度は若干高めであるが、高引火点
鉱油に比べれば十分低い、さらに、本発明品はいずれも
生分解性がオリーブ油と同程度に良く、生体内蓄積性が
ほとんどなく、安全性が高い。In addition, although the kinematic viscosity of the products of the present invention is slightly higher, it is sufficiently lower than that of high flash point mineral oil.Furthermore, all of the products of the present invention have good biodegradability comparable to that of olive oil, and have almost no bioaccumulation potential. It is highly safe.
このように、本発明品は引火点が高（、流動点が低（、
電気特性に優れ、且つ環境汚染の恐れの少ないｊｔ燃性
の電気絶縁油であることがわかる。In this way, the product of the present invention has a high flash point (and a low pour point).
It can be seen that this is a flammable electrical insulating oil that has excellent electrical properties and is less likely to cause environmental pollution.
Claims (3)
脂肪酸とからなるエステル 単独か、またはこれと Ｂ）その他のネオペンチルポリオールと炭素数７〜１２
の脂肪酸とからなるエステル との混合物からなる、その引火点が２５０℃以上、流動
点が−３０℃以下である電気絶縁油。(1) A) Ester consisting of dipentaerythritol and a fatty acid having 7 to 12 carbon atoms alone, or B) Other neopentyl polyol and 7 to 12 carbon atoms
An electrical insulating oil having a flash point of 250°C or higher and a pour point of -30°C or lower, comprising a mixture of a fatty acid and an ester comprising a fatty acid.
またはトリメチロールプロパンである特許請求の範囲第
（１）項記載の電気絶縁油。(2) The electrical insulating oil according to claim (1), wherein the neopentyl polyol is pentaerythritol or trimethylolpropane.
であつて、混合物中に占めるＡ成分のエステルの割合が
５０重量％以上である特許請求の範囲第（１）項または
第（２）項記載の電気絶縁油。(3) Claims (1) or (2) which are a mixture of an ester of component A and an ester of component B, wherein the proportion of the ester of component A in the mixture is 50% by weight or more. Electrical insulating oil as described in section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14763087A JPH088012B2 (en) | 1987-06-12 | 1987-06-12 | Electrical insulating oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14763087A JPH088012B2 (en) | 1987-06-12 | 1987-06-12 | Electrical insulating oil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63310502A true JPS63310502A (en) | 1988-12-19 |
| JPH088012B2 JPH088012B2 (en) | 1996-01-29 |
Family
ID=15434672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14763087A Expired - Fee Related JPH088012B2 (en) | 1987-06-12 | 1987-06-12 | Electrical insulating oil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH088012B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006040888A1 (en) * | 2004-10-13 | 2006-04-20 | Japan Energy Corporation | Electrical insulation oil |
| JP2022161684A (en) * | 2021-04-09 | 2022-10-21 | 築野食品工業株式会社 | Method for depressing pour point of fatty acid ester |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5416879B2 (en) * | 2005-10-14 | 2014-02-12 | Ｊｘ日鉱日石エネルギー株式会社 | Lubricating oil composition |
| JP4558764B2 (en) * | 2007-07-19 | 2010-10-06 | 株式会社日立製作所 | Static induction machine with tap changer when loaded |
| JP2009117640A (en) * | 2007-11-07 | 2009-05-28 | Hitachi Ltd | Stationary induction apparatus with on-load tap changing device |
-
1987
- 1987-06-12 JP JP14763087A patent/JPH088012B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006040888A1 (en) * | 2004-10-13 | 2006-04-20 | Japan Energy Corporation | Electrical insulation oil |
| JP2022161684A (en) * | 2021-04-09 | 2022-10-21 | 築野食品工業株式会社 | Method for depressing pour point of fatty acid ester |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH088012B2 (en) | 1996-01-29 |
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