(19)

(11)

EP 0 802 961 A1

(12)

(43) Date of publication: 29.10.1997 Bulletin 1997/44 (21) Application number: 96900311.0 (22) Date of filing: 09.01.1996

(51) International Patent Classification (IPC):  C10L 1/ 22( . ) C10L 1/ 238( . ) C10L 10/ 08( . ) C10L 1/ 222( . ) C10L 1/ 2387( . ) (86) International application number: PCT/EP1996/000084 (87) International publication number: WO 1996/021709 (18.07.1996 Gazette 1996/33)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 10.01.1995 GB 19950000460 (71) Applicant: EXXON CHEMICAL PATENTS INC. Linden New Jersey 07036 (US)	(72) Inventors: CAPROTTI, Rinaldo Oxford, Oxfordshire OX2 9HD (GB) COLE, Roy, D. Wantage, Oxfordshire OX12 9TL (GB) (74) Representative: Hart, Richard Joseph, et al  Exxon Chemical Limited, Exxon Chemical Technology Centre, P.O. Box 1, Milton Hill Abingdon, Oxfordshire OX13 6BB Abingdon, Oxfordshire OX13 6BB (GB)