Title:
LUBRICATING OIL COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2022/209569
Kind Code:
A1
Abstract:
Provided is a lubricating oil composition that comprises a base oil (A) and a dispersant viscosity index improver (B), wherein the nitrogen atom content of the dispersant viscosity index improver (B) on a solid content basis is 0.50-1.50 mass%, the weight average molecular weight (Mw) is 100,000 or greater, and the content of the dispersant viscosity index improver (B) in terms of solids is 0.05-5.0 mass% exclusive relative to the total composition. This lubricating oil composition has excellent wear resistance when contaminated with soot.
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Inventors:
FUJITA SHOICHIRO (JP)
SUNAHARA KENJI (JP)
YAMAGISHI TSUKASA (JP)
KUBOTA MASAYA (JP)
SUNAHARA KENJI (JP)
YAMAGISHI TSUKASA (JP)
KUBOTA MASAYA (JP)
Application Number:
PCT/JP2022/009270
Publication Date:
October 06, 2022
Filing Date:
March 04, 2022
Export Citation:
Assignee:
IDEMITSU KOSAN CO (JP)
International Classes:
C10M157/04; C10M133/16; C10M137/10; C10M139/00; C10M149/10; C10M171/04; C10N10/12; C10N30/06; C10N40/25
Foreign References:
| JP2014125569A | 2014-07-07 | |||
| JPS54117592A | 1979-09-12 | |||
| JPS5525492A | 1980-02-23 | |||
| JPS4615786B1 | 1971-04-28 | |||
| JPH093131A | 1997-01-07 | |||
| JP2006225663A | 2006-08-31 |
Attorney, Agent or Firm:
OHTANI PATENT OFFICE (JP)
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