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Title:
LUBRICATING OIL COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2020/262639
Kind Code:
A1
Abstract:
Provided is a lubricating oil composition containing a base oil (A), an imide compound (B), a calcium-based cleaning agent (C), a polymer component (D), and zinc dithiophosphate (E), wherein the imide compound (B) contains at least one non-boron modified succinic acid imide compound (Bx) selected from succinic acid monoimides (B1x) represented by general formula (b-1) and succinic acid bisimides (B2x) represented by general formula (b-2), the polymer component (D) has a mass-average molecular weight (Mw) of 10,000-50,000, and contains at least one selected from olefin polymers (D1) and polymethacrylates (D2), and the lubricating oil composition has excellent wear resistance and oil film-holding properties even if the viscosity thereof is reduced.

Inventors:
HORITA NAOTO (JP)
OKI HIROSHI (JP)
Application Number:
PCT/JP2020/025315
Publication Date:
December 30, 2020
Filing Date:
June 26, 2020
Export Citation:
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Assignee:
IDEMITSU KOSAN CO (JP)
International Classes:
C10M161/00; C10M133/16; C10M135/10; C10M137/10; C10M139/00; C10M143/00; C10M145/14; C10M159/24; C10N10/04; C10N20/02; C10N20/04; C10N30/06; C10N40/25
Domestic Patent References:
WO2019003573A12019-01-03
Foreign References:
JP2018062551A2018-04-19
JP2018168341A2018-11-01
JP2012107143A2012-06-07
JPH09202890A1997-08-05
JP2008208221A2008-09-11
Attorney, Agent or Firm:
OHTANI PATENT OFFICE (JP)
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