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(11)

EP 2 285 942 A2

(12)

(88) Date of publication A3: 04.03.2010 (43) Date of publication: 23.02.2011 Bulletin 2011/08 (21) Application number: 09758998.0 (22) Date of filing: 21.05.2009

(51) International Patent Classification (IPC):  C10M 107/02(2006.01) C10N 20/02(2006.01) C10N 30/06(2006.01) C10N 30/12(2006.01) C10M 105/04(2006.01) C10N 30/04(2006.01) C10N 30/10(2006.01) C10N 40/04(2006.01) (86) International application number: PCT/US2009/044772 (87) International publication number: WO 2009/148837 (10.12.2009 Gazette 2009/50)

(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 TR Designated Extension States: AL BA RS (30) Priority: 29.05.2008 US 128801 (71) Applicant: Chevron U.S.A. Incorporated San Ramon, California 94583 (US)	(72) Inventors: HOSTE, Katty, S. B-9700 Oudenaarde (BE) PEREMANS, Yves, A. B-8400 Oostende (BE) SHAH, Ravindra, R. Concord CA 94518 (US) FERRER, Marissa, B. San Leandro CA 94577 (US) (74) Representative: Nash, David Allan  Haseltine Lake LLP Redcliff Quay 120 Redcliff Street Bristol BS1 6HU Bristol BS1 6HU (GB)