(19)

(11)

EP 2 475 753 A1

(12)

(43) Date of publication: 18.07.2012 Bulletin 2012/29 (21) Application number: 10749866.9 (22) Date of filing: 07.09.2010

(51) International Patent Classification (IPC):  C10M 169/04(2006.01) C10M 171/02(2006.01) (86) International application number: PCT/EP2010/063082 (87) International publication number: WO 2011/026990 (10.03.2011 Gazette 2011/10)

(84) Designated Contracting States: AL 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: 07.09.2009 EP 09252138 (71) Applicant: Shell Internationale Research Maatschappij B.V. 2596 HR The Hague (NL)	(72) Inventor: TREDGET, Cara Siobhan 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)