JPS57195195A - Purification of orthophosphoric ester oil for electric insulation - Google Patents

Purification of orthophosphoric ester oil for electric insulation

Info

Publication number
JPS57195195A
JPS57195195A JP8131781A JP8131781A JPS57195195A JP S57195195 A JPS57195195 A JP S57195195A JP 8131781 A JP8131781 A JP 8131781A JP 8131781 A JP8131781 A JP 8131781A JP S57195195 A JPS57195195 A JP S57195195A
Authority
JP
Japan
Prior art keywords
ester oil
orthophosphoric ester
electric insulation
boiling impurities
purification
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.)
Pending
Application number
JP8131781A
Other languages
Japanese (ja)
Inventor
Hisamitsu Takahashi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP8131781A priority Critical patent/JPS57195195A/en
Publication of JPS57195195A publication Critical patent/JPS57195195A/en
Pending legal-status Critical Current

Links

Landscapes

  • Organic Insulating Materials (AREA)
  • Lubricants (AREA)

Abstract

PURPOSE: Orthophosphoric ester oil is heated under vacuum as an inert gas is bubbled into it to remove low-boiling impurities, then treated with activated clay to give the orthophosphoric ester oil with improved electric insulation performance.
CONSTITUTION: Orthophosphoric ester oil is heated under vacuum as an inert gas such as helium, argon or nitrogen gas is bubbled in it to remove low-boiling impurities as a vapor. Then, active clay is added to the remaining oil by 5W 20vol/vol% and heated at 80W100°C for 0.5W1.0hr under stirring to effect adsorption treatment. Then, high-boiling impurities are separated by means of a filter press or the like.
COPYRIGHT: (C)1982,JPO&Japio
JP8131781A 1981-05-26 1981-05-26 Purification of orthophosphoric ester oil for electric insulation Pending JPS57195195A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8131781A JPS57195195A (en) 1981-05-26 1981-05-26 Purification of orthophosphoric ester oil for electric insulation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8131781A JPS57195195A (en) 1981-05-26 1981-05-26 Purification of orthophosphoric ester oil for electric insulation

Publications (1)

Publication Number Publication Date
JPS57195195A true JPS57195195A (en) 1982-11-30

Family

ID=13743016

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8131781A Pending JPS57195195A (en) 1981-05-26 1981-05-26 Purification of orthophosphoric ester oil for electric insulation

Country Status (1)

Country Link
JP (1) JPS57195195A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5192824A (en) * 1989-12-21 1993-03-09 Yamaha Corporation Electronic musical instrument having multiple operation modes
US5241092A (en) * 1991-05-13 1993-08-31 Praxair Technology, Inc. Deodorizing edible oil and/or fat with non-condensible inert gas and recovering a high quality fatty acid distillate
US5315020A (en) * 1992-07-29 1994-05-24 Praxair Technology, Inc. Method of recovering waste heat from edible oil deodorizer and improving product stability
USRE38276E1 (en) 1988-09-02 2003-10-21 Yamaha Corporation Tone generating apparatus for sound imaging

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE38276E1 (en) 1988-09-02 2003-10-21 Yamaha Corporation Tone generating apparatus for sound imaging
US5192824A (en) * 1989-12-21 1993-03-09 Yamaha Corporation Electronic musical instrument having multiple operation modes
US5241092A (en) * 1991-05-13 1993-08-31 Praxair Technology, Inc. Deodorizing edible oil and/or fat with non-condensible inert gas and recovering a high quality fatty acid distillate
US5374751A (en) * 1991-05-13 1994-12-20 Praxair Technology, Inc. Deodorizing edible oil and/or with non-condensible inert gas and recovering a high quality fatty acid distillate
US5315020A (en) * 1992-07-29 1994-05-24 Praxair Technology, Inc. Method of recovering waste heat from edible oil deodorizer and improving product stability
US5401866A (en) * 1992-07-29 1995-03-28 Praxair Technology, Inc. Method of recovering waste heat from edible oil deodorizer and improving product stability

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