Title:
LUBRICATING OIL COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2016/117378
Kind Code:
A1
Abstract:
The lubricating oil composition according to one embodiment of the present invention comprises an oxygen-containing synthetic base oil having an oxygen content (A) of 15 to 40 mass% and a kinematic viscosity at 100°C of 0.5 to 50 mm2/s and a viscosity index improver which is an oxygen-containing compound having an oxygen content (B) of 15 to 40 mass% and a kinematic viscosity at 100°C of 11,000 mm2/s or higher. The mass ratio of the oxygen-containing synthetic base oil to the viscosity index improver is 99.5:0.5 to 75:25, and the ratio (A/B) of the oxygen content (A) of the oxygen-containing synthetic base oil to the oxygen content (B) of the viscosity index improver is in the range of 0.5 to 2.
Inventors:
KANEKO MASATO (JP)
Application Number:
PCT/JP2016/050404
Publication Date:
July 28, 2016
Filing Date:
January 07, 2016
Export Citation:
Assignee:
IDEMITSU KOSAN CO (JP)
International Classes:
C10M169/04; C10M105/08; C10M105/18; C10M105/38; C10M107/20; C10M107/24; C10M107/34; C10M145/00; C10M145/04; C10M145/26; C10N20/02; C10N30/00; C10N30/02; C10N40/00; C10N40/04; C10N40/08; C10N40/12; C10N40/25; C10N40/30
Foreign References:
| JPS63142098A | 1988-06-14 | |||
| JP2002003874A | 2002-01-09 | |||
| JP2001348587A | 2001-12-18 | |||
| JPH01311122A | 1989-12-15 | |||
| JP2014196503A | 2014-10-16 |
Other References:
See also references of EP 3249030A4
Attorney, Agent or Firm:
OHTANI, Tamotsu et al. (JP)
Tamotsu Otani (JP)
Tamotsu Otani (JP)
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