EP 2690163 A4 20141022 - LUBRICATING OIL COMPOSITION
Title (en)
LUBRICATING OIL COMPOSITION
Title (de)
SCHMIERÖLZUSAMMENSETZUNG
Title (fr)
COMPOSITION D'HUILE LUBRIFIANTE
Publication
Application
Priority
- JP 2011068069 A 20110325
- JP 2011070813 W 20110913
Abstract (en)
[origin: EP2690163A1] The present invention provides a lubricating oil composition which can meet the demand for such fuel saving performance as exceeds the fuel saving performance of a conventional low viscosity lubricating oil composition. The lubricating oil composition comprises (A) a lubricating base oil having a %C A of 2 or less and adjusted to have a 100°C kinematic viscosity of 1.5 to 4.5 mm 2 /s and (B) a viscosity index improver comprising (B1) a poly(meth)acrylate having a weight-average molecular weight of 50,000 or less in an amount of 1 to 10 percent by mass and (B2) a poly(meth)acrylate having a weight-average molecular weight of 100,000 to 250,000 in an amount of 0.1 to 5 percent by mass on the total composition mass basis, the composition having a 80°C high-shear viscosity (Vs: mPa·s) and a 80°C kinematic viscosity (Vk: mm 2 /s) ratio (Vs/Vk) of less than 1 and a coefficient of traction of 0.02 or less at 40°C, an average speed of 3.0 m/s, a slip ratio of 10%, and a contact pressure of 0.4 GPa.
IPC 8 full level
C10M 145/14 (2006.01); C10M 169/04 (2006.01); C10N 10/04 (2006.01); C10N 20/02 (2006.01); C10N 20/04 (2006.01); C10N 30/02 (2006.01); C10N 30/06 (2006.01); C10N 40/04 (2006.01)
CPC (source: EP US)
C10M 145/14 (2013.01 - EP US); C10M 169/04 (2013.01 - US); C10M 169/041 (2013.01 - EP US); C10M 2203/1025 (2013.01 - EP US); C10M 2209/084 (2013.01 - EP US); C10M 2223/04 (2013.01 - EP US); C10M 2229/02 (2013.01 - EP US); C10N 2010/04 (2013.01 - EP US); C10N 2020/017 (2020.05 - EP US); C10N 2020/02 (2013.01 - EP US); C10N 2020/04 (2013.01 - EP US); C10N 2030/02 (2013.01 - EP US); C10N 2030/06 (2013.01 - EP US); C10N 2030/54 (2020.05 - EP US); C10N 2030/68 (2020.05 - EP US); C10N 2040/04 (2013.01 - EP US); C10N 2040/042 (2020.05 - EP US); C10N 2040/044 (2020.05 - EP US); C10N 2040/045 (2020.05 - EP US); C10N 2060/14 (2013.01 - EP US)
Citation (search report)
- [A] JP 2008179662 A 20080807 - COSMO SEKIYU LUBRICANTS KK
- [A] WO 2010087398 A1 20100805 - IDEMITSU KOSAN CO [JP], et al & EP 2392637 A1 20111207 - IDEMITSU KOSAN CO [JP]
- [X] WO 2007123266 A1 20071101 - NIPPON OIL CORP [JP], et al & EP 2009083 A1 20081231 - NIPPON OIL CORP [JP]
- [X] WO 2006043709 A1 20060427 - NIPPON OIL CORP [JP], et al & EP 1808476 A1 20070718 - NIPPON OIL CORP [JP]
- See references of WO 2012132054A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 2690163 A1 20140129; EP 2690163 A4 20141022; BR 112013018270 A2 20161116; CA 2820714 A1 20121004; CN 103339241 A 20131002; JP 2012201808 A 20121022; JP 5789111 B2 20151007; US 2014011724 A1 20140109; WO 2012132054 A1 20121004; ZA 201303991 B 20140827
DOCDB simple family (application)
EP 11862154 A 20110913; BR 112013018270 A 20110913; CA 2820714 A 20110913; CN 201180066023 A 20110913; JP 2011068069 A 20110325; JP 2011070813 W 20110913; US 201114002413 A 20110913; ZA 201303991 A 20130531