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(11)

EP 2 013 322 A1

(12)

(43) Date of publication: 14.01.2009 Bulletin 2009/03 (21) Application number: 07728686.2 (22) Date of filing: 01.05.2007

(51) International Patent Classification (IPC):  C10M 141/06(2006.01) C10M 141/10(2006.01) C10N 30/04(2006.01) C10M 163/00(2006.01) C10M 161/00(2006.01) C10N 40/25(2006.01) (86) International application number: PCT/EP2007/054232 (87) International publication number: WO 2007/128740 (15.11.2007 Gazette 2007/46)

(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 MT NL PL PT RO SE SI SK TR Designated Extension States: AL BA HR MK RS (30) Priority: 03.05.2006 EP 06252350 (71) Applicant: Shell Internationale Research Maatschappij B.V. 2596 HR The Hague (NL)	(72) Inventors: NELSON, David Charles Chester Cheshire CH2 4NI (GB) SOUTHBY, Mark Clift Chester Cheshire CH2 4NU (GB) (74) Representative: Zeestraten, Albertus W. J. et al Shell International B.V. Intellectual Property Services P.O. Box 384 2501 CJ The Hague 2501 CJ The Hague (NL)