(19)

(11)

EP 1 230 326 A1

(12)

(43) Date of publication: 14.08.2002 Bulletin 2002/33 (21) Application number: 00974402.0 (22) Date of filing: 17.10.2000

(51) International Patent Classification (IPC)7: C10L 1/04 (86) International application number: PCT/EP0010/186 (87) International publication number: WO 0132/811 (10.05.2001 Gazette 2001/19)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 29.10.1999 GB 9925640 (71) Applicant: ExxonMobil Research and Engineering Company Annandale,New Jersey 08801 (US)	(72) Inventor: ASHTON, Simon, Christopher, Peter Ashtead KT21 2PA (GB) (74) Representative: Troch, Geneviève et al ExxonMobil Chemical Europe Inc.,P.O. Box 105 1830 Machelen 1830 Machelen (BE)