(19)

(11)

EP 1 702 021 A2

(12)

(88) Date of publication A3: 05.01.2006 (43) Date of publication: 20.09.2006 Bulletin 2006/38 (21) Application number: 04814319.2 (22) Date of filing: 16.12.2004

(51) International Patent Classification (IPC):  C10G 1/00(2006.01) (86) International application number: PCT/US2004/042120 (87) International publication number: WO 2005/066302 (21.07.2005 Gazette 2005/29)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR (30) Priority: 19.12.2003 US 531506 P 14.10.2004 US 618799 P (71) Applicant: SHELL INTERNATIONAL RESEARCH MAATSCHAPPIJ B.V. 2596 HR Den Haag (NL)	(72) Inventors: MILAM, Stanley, Nemec Spring, TX 77379 (US) WELLINGTON, Scott, Lee Bellaire, TX 77401 (US) (74) Representative: Zeestraten, Albertus W. J.  Shell International B.V. P.O. Box 384 NL-2501 CJ The Hague NL-2501 CJ The Hague (NL)