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(11)

EP 0 703 959 A1

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(43) Date of publication: 03.04.1996 Bulletin 1996/14 (21) Application number: 94914211.0 (22) Date of filing: 19.04.1994

(51) International Patent Classification (IPC):  C10M 149/ 22( . ) C10M 175/ 00( . ) C10M 171/ 06( . ) (86) International application number: PCT/US1994/004262 (87) International publication number: WO 1994/024237 (27.10.1994 Gazette 1994/24)

(84) Designated Contracting States: DE GB (30) Priority: 19.04.1993 US 19930049210 (71) Applicant: EXXON CHEMICAL PATENTS INC. Linden, New Jersey 07036-0710 (US)

(72) Inventors: BROWNAWELL, Darrell, W. Scotch Plains, NJ 07076 (US) THALER, Warren, A. Flemington, NJ 07095 (US) JONES, Cruise, K. Easton, PA 18042 (US) EMERT, Jacob Brooklyn, NY 11218 (US) PATIL, Abhimanyu, O. Westfield, NJ 07090 (US) (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)