Title:
潤滑油組成物
Document Type and Number:
Japanese Patent JP7286622
Kind Code:
B2
Abstract:
The present invention relates to a lubricating oil composition containing a mineral oil (A) containing 30% by mass or more of a bright stock (A1) on the basis of the total amount of the lubricating oil composition, wherein the lubricating oil composition further contains a synthetic oil (B) and a phosphoric acid ester (C), the content of the synthetic oil (B) is less than 70% by mass on the basis of the total amount of the lubricating oil composition, the content of the phosphoric acid ester (C) as expressed in terms of a phosphorus atom is 0.050 to 0.200% by mass on the basis of the total amount of the lubricating oil composition, and a viscosity index is 150 or more, thereby providing a lubricating oil composition having low temperature dependence and favorable lubricating characteristics even in the case of using the mineral oil containing a bright stock.
Inventors:
Takuya Ohno
Application Number:
JP2020510906A
Publication Date:
June 05, 2023
Filing Date:
March 26, 2019
Export Citation:
Assignee:
IDEMITSU KOSAN CO.,LTD.
International Classes:
C10M137/04; C10M101/02; C10M107/02; C10M137/08
Domestic Patent References:
| JP2008274190A | ||||
| JP2006176775A | ||||
| JP2013145046A | ||||
| JP2000230633A | ||||
| JP2015086286A | ||||
| JP8165482A | ||||
| JP62275198A |
Foreign References:
| WO2013154005A1 |
Attorney, Agent or Firm:
Patent Attorney Corporation Otani Patent Office
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