(19)

(11)

EP 0 152 455 A1

(12)

(43) Date of publication: 28.08.1985 Bulletin 1985/35 (21) Application number: 84903137.0 (22) Date of filing: 03.08.1984

(51) International Patent Classification (IPC):  C10L 1/ 222( . ) C10L 1/ 24( . ) C10L 1/ 224( . ) F02B 3/ 06( . ) (86) International application number: PCT/US1984/001243 (87) International publication number: WO 1985/000827 (28.02.1985 Gazette 1985/05)

(84) Designated Contracting States: DE FR GB (30) Priority: 08.08.1983 US 19830521281 30.09.1983 US 19830537894 (71) Applicant: CHEVRON RESEARCH AND TECHNOLOGY COMPANY San Francisco, CA 94120 (US)	(72) Inventor: COURTNEY, Richard, L. San Rafael, CA 94901 (US) (74) Representative: Kosmin, Gerald Emmanuel, et al  HASELTINE, LAKE & CO. Hazlitt House 28 Southampton Buildings Chancery Lane London, WC2A 1AT London, WC2A 1AT (GB)