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(11)

EP 2 235 137 A1

(12)

(43) Date of publication: 06.10.2010 Bulletin 2010/40 (21) Application number: 08867957.6 (22) Date of filing: 20.11.2008

(51) International Patent Classification (IPC):  C10G 29/12(2006.01) C07C 2/56(2006.01) (86) International application number: PCT/US2008/084125 (87) International publication number: WO 2009/085449 (09.07.2009 Gazette 2009/28)

(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 MT NL NO PL PT RO SE SI SK TR Designated Extension States: AL BA MK RS (30) Priority: 28.12.2007 US 3576 (71) Applicant: Chevron U.S.A., Inc. San Ramon, CA 94583 (US)

(72) Inventors: LUO, Huping Richmond California 94804 (US) KEMOUN, Abdenour Pleasant Hill California 94523 (US) PARIMI, Krishniah Alamo California 94507 (US) AHMED, Moinuddin Hercules California 94547 (US) CHANG, Bong-kyu San Rafael California 94903 (US) TIMKEN, Hye-kyung C. Albany California 94706 (US) (74) Representative: Nash, David Allan  Haseltine Lake LLP Redcliff Quay 120 Redcliff Street Bristol BS1 6HU Bristol BS1 6HU (GB)