(19)

(11)

EP 2 398 872 A1

(12)

(43) Date of publication: 28.12.2011 Bulletin 2011/52 (21) Application number: 10703899.4 (22) Date of filing: 16.02.2010

(51) International Patent Classification (IPC):  C10M 101/02(2006.01) C10M 169/04(2006.01) (86) International application number: PCT/EP2010/051915 (87) International publication number: WO 2010/094681 (26.08.2010 Gazette 2010/34)

(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: 18.02.2009 EP 09153072 (71) Applicant: Shell Internationale Research Maatschappij B.V. 2596 HR Den Haag (NL)	(72) Inventors: WEDLOCK, David John Chester Cheshire CH2 4NU (GB) WU, Yanyun Chester Cheshire CH2 4NU (GB) (74) Representative: Matthezing, Robert Maarten  Shell International B.V. Intellectual Property Services P.O. Box 384 2501 CJ The Hague 2501 CJ The Hague (NL)