(19)

(11)

EP 0 874 885 A1

(12)

(43) Date of publication: 04.11.1998 Bulletin 1998/45 (21) Application number: 96929022.0 (22) Date of filing: 26.08.1996

(51) International Patent Classification (IPC):  C10M 133/ 52( . ) C10M 137/ 10( . ) C10M 163/ 00( . ) C10N 30/ 06( . ) C10M 133/ 56( . ) C10M 159/ 20( . ) C10N 30/ 00( . ) C10N 40/ 04( . ) (86) International application number: PCT/US1996/013637 (87) International publication number: WO 1997/010318 (20.03.1997 Gazette 1997/13)

(84) Designated Contracting States: BE DE ES FR GB IT NL (30) Priority: 14.09.1995 US 19950528449 (71) Applicant: EXXON CHEMICAL PATENTS INC. Linden, New Jersey 07036-0710 (US)	(72) Inventors: DOWLING, Michael Streatley Berkshire RG8 9LH (GB) NOLES, Joe, Randall, Jr. Belle Mead, NJ 08502 (US) (74) Representative: Mansell, Keith Rodney, et al  Exxon Chemical Limited European Patents and Licences Exxon Chemical Technology Centre P O Box 1 Milton Hill, Abingdon, Oxfordshire OX13 6BB Milton Hill, Abingdon, Oxfordshire OX13 6BB (GB)