Title:
LUBRICANT OIL COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2015/133529
Kind Code:
A1
Abstract:
A lubricant oil composition which comprises a lubricant oil base oil, (1) a polymethacrylate and/or an olefin copolymer each having a mass average molecular weight of 100,000 to 600,000 inclusive and (2) an ester-type ashless friction modifier and/or an amine-type ashless friction modifier, and which has a shear viscosity of 2.3 mPa·s or more and less than 3.7 mPa·s at 150°C. It becomes possible to provide a lubricant oil composition suitable for the reduction of friction in a sliding mechanism, which is equipped with a piston ring and a liner, in a device equipped with the sliding mechanism.
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Inventors:
KASAI MORITSUGU (JP)
TAMURA KAZUSHI (JP)
TAMURA KAZUSHI (JP)
Application Number:
PCT/JP2015/056384
Publication Date:
September 11, 2015
Filing Date:
March 04, 2015
Export Citation:
Assignee:
IDEMITSU KOSAN CO (JP)
International Classes:
C10M161/00; C10M129/68; C10M129/95; C10M133/04; C10M133/16; C10M133/56; C10M139/00; C10M143/00; C10M145/14; C10N10/04; C10N20/02; C10N20/04; C10N30/00; C10N30/06; C10N40/02; C10N40/25
Domestic Patent References:
WO2009072524A1 | 2009-06-11 | |||
WO2010140562A1 | 2010-12-09 | |||
WO2010140391A1 | 2010-12-09 | |||
WO2008047550A1 | 2008-04-24 |
Foreign References:
JP2010280825A | 2010-12-16 | |||
JP2010095664A | 2010-04-30 | |||
JP2010095663A | 2010-04-30 | |||
JP2010095662A | 2010-04-30 | |||
JP2007016172A | 2007-01-25 | |||
JP2005002888A | 2005-01-06 | |||
JP2013502491A | 2013-01-24 |
Other References:
See also references of EP 3115444A4
Attorney, Agent or Firm:
OHTANI, Tamotsu (JP)
Tamotsu Otani (JP)
Tamotsu Otani (JP)
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