(19)

(11)

EP 0 680 506 A1

(12)

(43) Date of publication: 08.11.1995 Bulletin 1995/45 (21) Application number: 94905667.0 (22) Date of filing: 20.01.1994

(51) International Patent Classification (IPC):  C10L 1/ 18( . ) C10L 10/ 08( . ) C10L 1/ 19( . ) (86) International application number: PCT/EP1994/000148 (87) International publication number: WO 1994/017160 (04.08.1994 Gazette 1994/18)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IT LI NL SE (30) Priority: 21.01.1993 GB 19930001119 (71) Applicant: EXXON CHEMICAL PATENTS INC. Linden, New Jersey 07036-0710 (US)

(72) Inventors: CAPROTTI, Rinaldo East Hanney, Oxfordshire OX12 0HQ (GB) BOVINGTON, Charles Herbert Faringdon, Oxfordshire SN7 7SS (GB) MACRAE, Colin John Douglas Eastleigh, Hampshire SO5 1AH (GB) (74) Representative: Mansell, Keith Rodney  Exxon Chemical Limited European Patents and Licences Exxon Chemical Technology Centre P O Box 1 GB-Abingdon, Oxfordshire OX13 6BB GB-Abingdon, Oxfordshire OX13 6BB (GB)