Title:
LUBRICATING OIL COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2024/019027
Kind Code:
A1
Abstract:
A lubricating oil composition comprising (A) a lubricant base oil, (B) an extreme pressure agent, and (C) a nitrogen-containing ashless dispersant, wherein: the lubricating oil composition volume resistivity at 80°C is at least 0.0020×1012 Ω-cm; the (B) component is a substance that contains a specific (B1) phosphorus extreme pressure agent, and either does not contain (B2) a sulfur-containing extreme pressure agent or contains the (B2) component such that the sulfur content derived from the (B2) component is at most a specific quantity; the phosphorus content derived from the (B1) component is at most a specific quantity; and the mass ratio ([phosphorus]/[nitrogen]) of phosphorus derived from the (B1) component and nitrogen derived from the (C) component is at least 0.60 and at most 2.30.
Inventors:
MATSUKI SHINGO (JP)
IINO MARI (JP)
TADA AKIRA (JP)
NAKAMURA TOSHITAKA (JP)
IINO MARI (JP)
TADA AKIRA (JP)
NAKAMURA TOSHITAKA (JP)
Application Number:
PCT/JP2023/026182
Publication Date:
January 25, 2024
Filing Date:
July 18, 2023
Export Citation:
Assignee:
ENEOS CORP (JP)
International Classes:
C10M169/04; C10M101/02; C10M133/56; C10M135/10; C10M137/08; C10N10/04; C10N30/00; C10N30/06; C10N30/08; C10N30/10; C10N30/12; C10N40/00; C10N40/02; C10N40/04; C10N40/06
Foreign References:
| JP2021155740A | 2021-10-07 | |||
| JP2021006617A | 2021-01-21 | |||
| JP2013199594A | 2013-10-03 | |||
| JP2019157131A | 2019-09-19 | |||
| JP2004210988A | 2004-07-29 | |||
| JP2014019788A | 2014-02-03 | |||
| JP2016108406A | 2016-06-20 | |||
| JP2015178632A | 2015-10-08 |
Attorney, Agent or Firm:
CENTCREST IP ATTORNEYS (JP)
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