(19)

(11)

EP 0 514 433 A1

(12)

(43) Date of publication: 25.11.1992 Bulletin 1992/48 (21) Application number: 91903663.0 (22) Date of filing: 07.02.1991

(51) International Patent Classification (IPC):  C10L 1/ 234( . ) C10L 10/ 00( . ) C10L 1/ 18( . ) C10L 1/ 14( . ) C10L 1/ 16( . ) C10L 1/ 22( . ) (86) International application number: PCT/EP1991/000281 (87) International publication number: WO 1991/012302 (22.08.1991 Gazette 1991/19)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IT LI LU NL SE (30) Priority: 09.02.1990 GB 19900003023 (71) Applicant: EXXON CHEMICAL PATENTS INC. Florham Park New Jersey 07932 (US)	(72) Inventor: BLOCK, Dirk 4040 Neuss 21 (DE) (74) Representative: Mansell, Keith Rodney, et al  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)