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JPS56136891A - Preparation of lubricating oil - Google Patents

Preparation of lubricating oil

Info

Publication number
JPS56136891A
JPS56136891A JP4046380A JP4046380A JPS56136891A JP S56136891 A JPS56136891 A JP S56136891A JP 4046380 A JP4046380 A JP 4046380A JP 4046380 A JP4046380 A JP 4046380A JP S56136891 A JPS56136891 A JP S56136891A
Authority
JP
Japan
Prior art keywords
oil
component
mixed solvent
lubricating oil
solvent
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
JP4046380A
Other languages
Japanese (ja)
Inventor
Akizo Chiba
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.)
KANAGAWAKEN
Kanagawa Prefecture
Original Assignee
KANAGAWAKEN
Kanagawa Prefecture
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 KANAGAWAKEN, Kanagawa Prefecture filed Critical KANAGAWAKEN
Priority to JP4046380A priority Critical patent/JPS56136891A/en
Publication of JPS56136891A publication Critical patent/JPS56136891A/en
Pending legal-status Critical Current

Links

Landscapes

  • Lubricants (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)

Abstract

PURPOSE: To obtain easily a lubricating oil having a viscosity, specific gravity, acid value, etc. approximate to those of a fresh oil by removing a precipitate from a waste oil of an engine oil with a mixed solvent of a hydrocarbon solvent with propyl alcohol, and distilling the liquid component.
CONSTITUTION: A waste oil of an engine oil is mixed with a mixed solvent of (A) a (halogenated) hydrocarbon solvent having a boiling point ≤150°C with (B) propyl alcohol, stirred thoroughly and allowed to stand or centrifuged to remove the precipitate. The mixed solvent is then removed from the resultant liquid component by the distillation to give the aimed lubricating oil. A 4W9C hydrocarbon solvent, petroleum ether and carbon tetrachloride, trichlene, etc. may be cited as the component (A), and isopropyl alcohol is preferred as the component (B). The volume ratio between the waste oil and the mixed solvent is 1:0.3W1:20, preferably 1:0.5W 1:10.
EFFECT: The active component, e.g. an additive, can be maintained.
COPYRIGHT: (C)1981,JPO&Japio
JP4046380A 1980-03-31 1980-03-31 Preparation of lubricating oil Pending JPS56136891A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4046380A JPS56136891A (en) 1980-03-31 1980-03-31 Preparation of lubricating oil

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4046380A JPS56136891A (en) 1980-03-31 1980-03-31 Preparation of lubricating oil

Publications (1)

Publication Number Publication Date
JPS56136891A true JPS56136891A (en) 1981-10-26

Family

ID=12581325

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4046380A Pending JPS56136891A (en) 1980-03-31 1980-03-31 Preparation of lubricating oil

Country Status (1)

Country Link
JP (1) JPS56136891A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4597882A (en) * 1983-06-13 1986-07-01 Tokyo Denshi Kagaku Co., Ltd. Process for regenerating waste oils of synthetic lubricants containing fluorine atom

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4837401A (en) * 1971-09-14 1973-06-02
JPS5070406A (en) * 1973-07-30 1975-06-11

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4837401A (en) * 1971-09-14 1973-06-02
JPS5070406A (en) * 1973-07-30 1975-06-11

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4597882A (en) * 1983-06-13 1986-07-01 Tokyo Denshi Kagaku Co., Ltd. Process for regenerating waste oils of synthetic lubricants containing fluorine atom

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