Title:
LUBRICANT OIL COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2014/156338
Kind Code:
A1
Abstract:
A lubricant oil composition comprising a base oil having a kinematic viscosity of 1 to 200 mm2/s inclusive at 40˚C, a viscosity index of 80 or more and a sulfur content of less than 0.03 mass%, a polyacrylate-type compound (A) having a mass average molecular weight of 10,000 to 100,000 inclusive, and at least one compound (B) selected from phosphorous compounds each represented by formula (1), wherein the amount of the component (B) added is 0.05 to 2.0 mass% inclusive relative to the whole amount of the composition and the viscosity index of the composition is 160 or more.
Inventors:
SHINODA JITSUO (JP)
AOKI SHINJI (JP)
AOKI SHINJI (JP)
Application Number:
PCT/JP2014/053029
Publication Date:
October 02, 2014
Filing Date:
February 10, 2014
Export Citation:
Assignee:
IDEMITSU KOSAN CO (JP)
International Classes:
C10M169/04; C10M101/02; C10M137/04; C10M137/10; C10M145/14; C10N20/02; C10N30/00; C10N30/06; C10N40/04; C10N40/08; C10N40/12; C10N40/30
Domestic Patent References:
| WO2008038571A1 | 2008-04-03 | |||
| WO2010064347A1 | 2010-06-10 | |||
| WO2008038571A1 | 2008-04-03 |
Foreign References:
| JP2005307197A | 2005-11-04 | |||
| JP2005307202A | 2005-11-04 | |||
| JP2009161664A | 2009-07-23 | |||
| JP2009144045A | 2009-07-02 | |||
| JP2008013679A | 2008-01-24 | |||
| JP2002265971A | 2002-09-18 | |||
| JP2000063866A | 2000-02-29 | |||
| JP2003171684A | 2003-06-20 |
Other References:
See also references of EP 2980194A4
Attorney, Agent or Firm:
KINOSHITA & ASSOCIATES (JP)
Bottom intellectual property office of patent business corporation Tatsuyuki (JP)
Bottom intellectual property office of patent business corporation Tatsuyuki (JP)
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