(19)

(11)

EP 0 573 487 A1

(12)

(43) Date of publication: 15.12.1993 Bulletin 1993/50 (21) Application number: 92905371.0 (22) Date of filing: 25.02.1992

(51) International Patent Classification (IPC):  C10L 1/ 16( . ) C10L 1/ 234( . ) C10L 1/ 18( . ) C10L 1/ 14( . ) C10L 10/ 06( . ) C10L 1/ 22( . ) (86) International application number: PCT/EP1992/000405 (87) International publication number: WO 1992/015656 (17.09.1992 Gazette 1992/24)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IT LI LU MC NL SE (30) Priority: 27.02.1991 GB 19910004137 (71) Applicant: EXXON CHEMICAL PATENTS INC. Florham Park New Jersey 07932 (US)	(72) Inventor: BLOCK, Dirk D-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)