(19)

(11)

EP 1 615 986 A2

(12)

(88) Date of publication A3: 25.11.2004 (43) Date of publication: 18.01.2006 Bulletin 2006/03 (21) Application number: 04759791.9 (22) Date of filing: 02.04.2004

(51) International Patent Classification (IPC):  C10M 169/04(1985.01) (86) International application number: PCT/US2004/010221 (87) International publication number: WO 2004/094576 (04.11.2004 Gazette 2004/45)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR Designated Extension States: AL HR LT LV MK (30) Priority: 18.04.2003 US 418359 (71) Applicant: ExxonMobil Research and Engineering Company Annandale, NJ 08801-0900 (US)	(72) Inventors: WELLS, Paul, Patrick Mullica Hill, NJ, 08062 (US) CAREY, Vincent, Mark Sewell, NJ, 08080 (US) KELLY, Kevin, John Mullica Hill, NJ, 08062 (US) (74) Representative: Troch, Geneviève et al ExxonMobil Chemical Europe Inc., P.O. Box 105 1830 Machelen 1830 Machelen (BE)