(19)

(11)

EP 0 509 003 A1

(12)

(43) Date of publication: 21.10.1992 Bulletin 1992/43 (21) Application number: 91901320.0 (22) Date of filing: 21.12.1990

(51) International Patent Classification (IPC):  B01J 23/ 755( . ) C07C 2/ 10( . ) C07B 61/ 00( . ) C07C 11/ 02( . ) (86) International application number: PCT/GB1990/002011 (87) International publication number: WO 1991/009826 (11.07.1991 Gazette 1991/15)

(84) Designated Contracting States: BE DE ES FR GB IT NL (30) Priority: 05.01.1990 EP 19900300159 (71) Applicant: EXXON CHEMICAL PATENTS INC. Florham Park New Jersey 07932 (US)	(72) Inventors: SALEH, Ramzi, Yanni Flemington, NJ 08822 (US) LIVINGSTON, Joel, Robert Basking Ridge, NJ 07920 (US) MATHYS, Georges, Marie, Karel B-3360 Bierbeek (Korbeek-lo) (BE) (74) Representative: Bawden, Peter Charles, et al  EXXON CHEMICAL LIMITED Exxon Chemical Technology Centre PO Box 1 Abingdon Oxfordshire OX13 6BB Abingdon Oxfordshire OX13 6BB (GB)