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EP 0 707 623 A1

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(43) Date of publication: 24.04.1996 Bulletin 1996/17 (21) Application number: 94918148.0 (22) Date of filing: 27.05.1994

(51) International Patent Classification (IPC):  C10M 141/ 10( . ) C10N 10/ 04( . ) C10N 30/ 06( . ) C10M 163/ 00( . ) C10N 10/ 12( . ) C10N 40/ 25( . ) (86) International application number: PCT/US1994/006001 (87) International publication number: WO 1994/028094 (08.12.1994 Gazette 1994/27)

(84) Designated Contracting States: BE DE FR GB IT NL (30) Priority: 27.05.1993 JP 19930148669 (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)