Title:
LUBRICATING OIL COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2022/209540
Kind Code:
A1
Abstract:
Provided is a lubricating oil composition that is for gas engines and that contains: a base oil (A); at least one overbased calcium cleaning agent (B) selected from calcium salicylate (B1) and calcium phenate (B2); alkenylsuccinic acid imide (C); and a hindered amine-based antioxidant (D). The contained amount (X) of calcium atoms derived from component (B) is less than 0.090 mass% with respect to the total amount of the lubricating oil composition. The contained amount (Y) of calcium carbonate included in component (B) is not less than 0.060 mass% with respect to the total amount of the lubricating oil composition. The contained amount of boron atoms derived from component (C) is less than 0.020 mass% with respect to the total amount of the lubricating oil composition. The contained amount of component (D) is more than 0.20 mass% with respect to the total amount of the lubricating oil composition.
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Inventors:
KUSUMOTO TATSUYA (JP)
KASAI MORITSUGU (JP)
KASAI MORITSUGU (JP)
Application Number:
PCT/JP2022/008757
Publication Date:
October 06, 2022
Filing Date:
March 02, 2022
Export Citation:
Assignee:
IDEMITSU KOSAN CO (JP)
International Classes:
C10M163/00; C10M133/12; C10M133/16; C10M133/56; C10M137/10; C10M139/00; C10M159/22; C10N10/04; C10N30/00; C10N30/04; C10N30/10; C10N40/12
Domestic Patent References:
WO2020085228A1 | 2020-04-30 | |||
WO2020203525A1 | 2020-10-08 | |||
WO2015151769A1 | 2015-10-08 |
Foreign References:
JP2020164747A | 2020-10-08 | |||
JP2015108144A | 2015-06-11 | |||
JP2013518936A | 2013-05-23 | |||
JP2007506840A | 2007-03-22 | |||
JP2003277783A | 2003-10-02 | |||
JPH10219266A | 1998-08-18 | |||
JP2018203952A | 2018-12-27 |
Attorney, Agent or Firm:
KOBAYASHI Hiroshi et al. (JP)
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