JPS56136891A - Preparation of lubricating oil - Google Patents
Preparation of lubricating oilInfo
- 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
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
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)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4837401A (en) * | 1971-09-14 | 1973-06-02 | ||
JPS5070406A (en) * | 1973-07-30 | 1975-06-11 |
-
1980
- 1980-03-31 JP JP4046380A patent/JPS56136891A/en active Pending
Patent Citations (2)
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)
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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