(19)

(11)

EP 2 376 611 A2

(12)

(88) Date of publication A3: 07.10.2010 (43) Date of publication: 19.10.2011 Bulletin 2011/42 (21) Application number: 09837831.8 (22) Date of filing: 09.12.2009

(51) International Patent Classification (IPC):  C10M 129/84(2006.01) C10M 133/54(2006.01) C10M 133/06(2006.01) C10N 30/06(2006.01) (86) International application number: PCT/US2009/067253 (87) International publication number: WO 2010/080308 (15.07.2010 Gazette 2010/28)

(84) Designated Contracting States: 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 SE SI SK SM TR (30) Priority: 18.12.2008 US 337813 (71) Applicant: Chevron Oronite Company LLC San Ramon, CA 94583 (US)	(72) Inventor: RUHE, William R. Jr. Benicia California 94510 (US) (74) Representative: Nash, David Allan  Haseltine Lake LLP Redcliff Quay 120 Redcliff Street Bristol BS1 6HU Bristol BS1 6HU (GB)