(19)

(11)

EP 1 841 840 A1

(12)

(43) Date of publication: 10.10.2007 Bulletin 2007/41 (21) Application number: 05849044.2 (22) Date of filing: 23.12.2005

(51) International Patent Classification (IPC):  C10L 1/02(2006.01) (86) International application number: PCT/EP2005/057159 (87) International publication number: WO 2006/067234 (29.06.2006 Gazette 2006/26)

(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 LV MC NL PL PT RO SE SI SK TR (30) Priority: 24.12.2004 EP 04258122 (71) Applicant: Shell Internationale Research Maatschappij B.V. 2596 HR The Hague (NL)	(72) Inventors: CRAWSHAW, Elizabeth Helen Chester Cheshire CH2 4NU (GB) LILLEY, Lisa Caroline Chester Cheshire CH2 4NU (GB) VAN SLUIS, Beverly Chester Cheshire CH2 4NU (GB) (74) Representative: Zeestraten, Albertus W. J.  Shell International B.V., Intellectual Property Services, P.O. Box 384 2501 CJ The Hague 2501 CJ The Hague (NL)