JP2007137954A - 圧力媒体油 - Google Patents
圧力媒体油 Download PDFInfo
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Abstract
【解決手段】下記の(1)〜(4)の条件を満たす炭化水素化合物及び/又はエーテル化合物からなる圧力媒体油である。
(1)40℃における動粘度が2〜30mm2/s
(2)粘度指数が110以上、
(3)15℃における密度が0.86g/cm3以下
(4)流動点が−50℃以下
【選択図】なし
Description
例えば、有機伝導体の研究において、有機超伝導体、(TMFSF‐TTF)2PF6は、金属非金属転移圧力依存性の研究からヒントを得て発見され、β‐(BEDT‐TTF)2/3の8Kの超伝導体は該物質の圧力依存性の研究の結果発見されたものであることが知られている(非特許文献1、2参照)。
このように、有機超伝導体、さらには酸化物伝導体などの固体物質について、温度(極低温)や磁場等と共に、圧力の変化による物性の変化を追究し解明することによって新物質の開発が行われている。
したがって、圧力媒体には、広い圧力範囲に亘って液状であることが要求される。実際の印加状態で固化すれば、一軸性圧縮となり、均一な圧縮ができなくなるからである。つまり、圧力媒体には、室温での固化圧力が高いことが第一に要求される。また、圧力媒体は、通常極低温で実験することが多いことからその流動点が低いことも要求される。さらに、それ例外に実験に用いる試料や実験装置の材質と適合できることももちろん必要である。
したがって、室温における固化圧力が高く、かつ実験に用いる試料や実験装置の材質と適合できる圧力媒体の開発が要望されていた。
1.下記の(1)〜(4)の条件を満たす炭化水素化合物及び/又はエーテル化合物からなる圧力媒体油、
(1)40℃における動粘度が2〜30mm2/s
(2)粘度指数が110以上
(3)15℃における密度が0.86g/cm3以下
(4)流動点が−50℃以下
2.40℃における動粘度が2〜15mm2/sである前記1に記載の圧力媒体油、
3.炭化水素化合物が炭素数6〜14の1−オレフィンのオリゴマー又はその水素化物である前記1又は2に記載の圧力媒体油、
4.エーテル化合物が、一般式(1)
R1−O−(R3−O)m−R2 ・・・・・(1)
(式中、R1、R2は、炭素数2〜10の一価の炭化水素基、R3は、炭素数2〜10の二価の炭化水素基、mは1〜3の整数を示し、総炭素数が10〜30であると共に、分子中に分岐鎖を2以上有する。)
で表されるエーテル化合物である前記1又は2に記載の圧力媒体油、及び
5.室温(25℃)における固化圧力が2.3GPa以上である前記1〜4のいずれかに記載の圧力媒体油、
を提供するものである。
(1)本願発明における圧力媒体油は、40℃における動粘度が2〜30mm2/sであることを要し、2〜15mm2/sであることがより好ましい。圧力媒体油の40℃における動粘度が2mm2/s未満では、圧力媒体油の蒸発による損失や引火の恐れがあって不適当であり、一方40℃における動粘度が30mm2/sを超えると、圧力媒体油の固化圧力が低下することがある。
ここで、炭化水素化合物としては、例えば炭素数6〜14、好ましくは8〜14の1−オレフィン(α−オレフィン)のオリゴマー及びこれらの水素化物が挙げられる。この1−オレフィンのオリゴマーの代表例としては、1−オクテンオリゴマー、1−デセンオリゴマー、1−ドデセンオリゴマー及びこれらの水素化物が挙げられ、特に1−デセンオリゴマー及びその水素化物が好ましい。
R1−O−(R3−O)m−R2 ・・・・・(1)
(式中、R1、R2は、炭素数2〜10の一価の炭化水素基、R3は、炭素数2〜10の二価の炭化水素基、mは1〜3の整数を示し、総炭素数が10〜30であると共に、分子中に分岐鎖を2以上有する。)
で表されるエーテル化合物を用いることができる。
一般式(1)表されるエーテル化合物の代表例としては、オクタンジオールとトリメチルヘキサノールとのジエーテル、トリメチロールプロパンと3,7−ジメチルオクタノールとのジエーテル、トリプロピレングリコールとデカノールとのジエーテルなどが挙げられる。
室温(25℃)に保ったシリンダー状の加圧容器内に試料である圧力媒体油を充填し、縦方向に圧縮することにより、圧力を上げる。この際縦横2方向の歪を試料中に置いたストレインゲージで測定し、横方向の歪がなくなった圧力を固化圧力とした。圧力定点にはフッ化アンモニウム(0.361、1.15GPa)とビスマスBi(2.55、2.77GPa)を用いた。
・動粘度 :JIS K 2283に準拠して測定した。
・粘度指数 :JIS K 2283に準拠して測定した。
・密度 :JIS K 2249に準拠して測定した。
・流動点 :JIS K 2269に準拠して測定した。
・アニリン点 :JIS K 2256に準拠して測定した。
・引火点 :JIS K 2265に準拠して測定した。
下記に示す化合物1〜9からなる圧力媒体油について、固化圧力及び動粘度、粘度指数などの性状を測定した。測定結果を第1表に示す。
化合物1:1−オレフィンオリゴマ‐1
化合物2:1−オレフィンオリゴマ‐2
化合物3:1−オレフィンオリゴマ‐3
化合物4:オクタンジオールとトリメチルヘキサノールとのジエーテル)
化合物5:市販品(フッ素化油)
化合物6:ポリブテン
化合物7:ハード型アルキルベンゼン
Claims (5)
- 下記の(1)〜(4)の条件を満たす炭化水素化合物及び/又はエーテル化合物からなる圧力媒体油。
(1)40℃における動粘度が2〜30mm2/s
(2)粘度指数が110以上
(3)15℃における密度が0.86g/cm3以下
(4)流動点が−50℃以下 - 40℃における動粘度が2〜15mm2/sである請求項1に記載の圧力媒体油。
- 炭化水素化合物が炭素数6〜14の1−オレフィンのオリゴマー又はその水素化物である請求項1又は2に記載の圧力媒体油。
- エーテル化合物が、一般式(1)
R1−O−(R3−O)m−R2 ・・・・・(1)
(式中、R1、R2は、炭素数2〜10の一価の炭化水素基、R3は、炭素数2〜10の二価の炭化水素基、mは1〜3の整数を示し、総炭素数が10〜30であると共に、分子中に分岐鎖を2以上有する。)
で表されるエーテル化合物である請求項1又は2に記載の圧力媒体油。 - 室温(25℃)における固化圧力が2.3GPa以上である請求項1〜4のいずれかに記載の圧力媒体油。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005330869A JP5301078B2 (ja) | 2005-11-15 | 2005-11-15 | 圧力媒体油 |
PCT/JP2006/321620 WO2007058064A1 (ja) | 2005-11-15 | 2006-10-30 | 圧力媒体油 |
AT06822577T ATE494351T1 (de) | 2005-11-15 | 2006-10-30 | Druckmediumöl |
DE602006019472T DE602006019472D1 (de) | 2005-11-15 | 2006-10-30 | Druckmediumöl |
US12/093,739 US8394749B2 (en) | 2005-11-15 | 2006-10-30 | Pressure medium oil |
EP06822577A EP1950276B1 (en) | 2005-11-15 | 2006-10-30 | Pressure medium oil |
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Application Number | Priority Date | Filing Date | Title |
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JP2005330869A JP5301078B2 (ja) | 2005-11-15 | 2005-11-15 | 圧力媒体油 |
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Publication Number | Publication Date |
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JP2007137954A true JP2007137954A (ja) | 2007-06-07 |
JP5301078B2 JP5301078B2 (ja) | 2013-09-25 |
Family
ID=38048454
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Application Number | Title | Priority Date | Filing Date |
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JP2005330869A Expired - Fee Related JP5301078B2 (ja) | 2005-11-15 | 2005-11-15 | 圧力媒体油 |
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US (1) | US8394749B2 (ja) |
EP (1) | EP1950276B1 (ja) |
JP (1) | JP5301078B2 (ja) |
DE (1) | DE602006019472D1 (ja) |
WO (1) | WO2007058064A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008108356A1 (ja) * | 2007-03-05 | 2008-09-12 | Idemitsu Kosan Co., Ltd. | 圧力媒体油 |
JP2011201953A (ja) * | 2010-03-24 | 2011-10-13 | Showa Shell Sekiyu Kk | 冷却液 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3192855B1 (en) | 2014-09-12 | 2020-11-04 | Idemitsu Kosan Co., Ltd | Method for using pressure medium oil |
JP5941972B2 (ja) * | 2014-12-12 | 2016-06-29 | 出光興産株式会社 | 潤滑油組成物 |
WO2022180551A1 (en) * | 2021-02-24 | 2022-09-01 | Castrol Limited | Dielectric thermal management fluids and methods for using them |
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- 2006-10-30 US US12/093,739 patent/US8394749B2/en not_active Expired - Fee Related
- 2006-10-30 DE DE602006019472T patent/DE602006019472D1/de active Active
- 2006-10-30 EP EP06822577A patent/EP1950276B1/en not_active Not-in-force
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Cited By (2)
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WO2008108356A1 (ja) * | 2007-03-05 | 2008-09-12 | Idemitsu Kosan Co., Ltd. | 圧力媒体油 |
JP2011201953A (ja) * | 2010-03-24 | 2011-10-13 | Showa Shell Sekiyu Kk | 冷却液 |
Also Published As
Publication number | Publication date |
---|---|
WO2007058064A1 (ja) | 2007-05-24 |
DE602006019472D1 (de) | 2011-02-17 |
EP1950276A4 (en) | 2008-12-24 |
EP1950276A1 (en) | 2008-07-30 |
US20090071870A1 (en) | 2009-03-19 |
US8394749B2 (en) | 2013-03-12 |
EP1950276B1 (en) | 2011-01-05 |
JP5301078B2 (ja) | 2013-09-25 |
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