(19)

(11)

EP 0 765 374 A1

(12)

(43) Date of publication: 02.04.1997 Bulletin 1997/14 (21) Application number: 95923825.0 (22) Date of filing: 12.06.1995

(51) International Patent Classification (IPC):  C10M 169/ 06( . ) C10N 20/ 04( . ) C10N 30/ 08( . ) C10N 50/ 10( . ) C10N 10/ 02( . ) C10N 30/ 00( . ) C10N 40/ 02( . ) (86) International application number: PCT/US1995/007471 (87) International publication number: WO 1995/035355 (28.12.1995 Gazette 1996/03)

(84) Designated Contracting States: BE DE FR GB IT NL (30) Priority: 17.06.1994 US 19940261491 (71) Applicant: EXXON RESEARCH AND ENGINEERING COMPANY Florham Park, New Jersey 07932-0390 (US)	(72) Inventors: IKEUCHI, Hiromitsu Seya-Yokohama 246 (JP) KOBAYASHI, Takeo Sagamihara 228 (JP) SHIGANO, Shin Nakahara-Kawasaki 211 (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)