(19)
(11) EP 2 531 585 A1

(12)

(43) Date of publication:
12.12.2012 Bulletin 2012/50

(21) Application number: 11706663.9

(22) Date of filing: 28.01.2011
(51) International Patent Classification (IPC): 
C10M 111/04(2006.01)
C10N 40/25(2006.01)
C10N 30/06(2006.01)
C10N 40/26(2006.01)
(86) International application number:
PCT/US2011/022980
(87) International publication number:
WO 2011/094582 (04.08.2011 Gazette 2011/31)
(84) Designated Contracting States:
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

(30) Priority: 01.02.2010 US 337213 P
01.02.2010 US 337205 P
01.02.2010 US 337182 P
01.02.2010 US 337215 P
01.02.2010 US 337204 P

(71) Applicant: ExxonMobil Research and Engineering Company
Annandale, NJ 08801-0900 (US)

(72) Inventors:
  • CAREY, Vincent, M.
    Sewell, NJ 08080 (US)
  • CROUTHAMEL, Kevin, L.
    Richboro, PA 18954 (US)

(74) Representative: Plasman, ValĂ©rie M.L. et al
ExxonMobil Chemical Europe Inc. IP Law Shared Services P.O. Box 105
1830 Machelen
1830 Machelen (BE)

   


(54) METHOD FOR IMPROVING THE FUEL EFFICIENCY OF ENGINE OIL COMPOSITIONS FOR LARGE LOW AND MEDIUM SPEED ENGINES BY REDUCING THE TRACTION COEFFICIENT