(19)

(11)

EP 0 700 425 A1

(12)

(43) Date of publication: 13.03.1996 Bulletin 1996/11 (21) Application number: 94918149.0 (22) Date of filing: 27.05.1994

(51) International Patent Classification (IPC):  C10M 141/ 12( . ) C10M 169/ 04( . ) C10N 10/ 12( . ) C10M 163/ 00( . ) C10N 10/ 04( . ) C10N 30/ 06( . ) (86) International application number: PCT/US1994/006002 (87) International publication number: WO 1994/028095 (08.12.1994 Gazette 1994/27)

(84) Designated Contracting States: BE DE FR GB IT NL (30) Priority: 27.05.1993 JP 19930148670 (71) Applicant: EXXON RESEARCH AND ENGINEERING COMPANY Florham Park, New Jersey 07932-0390 (US)	(72) Inventors: ARAI, Katsuya Ohi-machi, Iruma-gun, Saitama-ken 356 (JP) ASANO, Satoshi Asaka-shi, Saitama-ken 351 (JP) WADA, Sadao Shiki-shi, Saitama-ken 353 (JP) (74) Representative: Fletcher Watts, Susan J., et al  ESSO Engineering (Europe) Limited, Patents and Licences, Mailpoint 72, Esso House, Ermyn Way Leatherhead, Surrey KT22 8XE Leatherhead, Surrey KT22 8XE (GB)