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EP 0 280 724 A1

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(43) Date of publication: 07.09.1988 Bulletin 1988/36 (21) Application number: 87906254.0 (22) Date of filing: 03.09.1987

(51) International Patent Classification (IPC):  B01J 8/ 18( . ) C10G 11/ 18( . ) C10G 51/ 00( . ) B01J 29/ 40( . ) B01J 29/ 80( . ) C10G 32/ 02( . ) B01J 29/ 08( . ) (86) International application number: PCT/US1987/002227 (87) International publication number: WO 1988/001638 (10.03.1988 Gazette 1988/06)

(84) Designated Contracting States: BE DE FR GB IT NL SE (30) Priority: 03.09.1986 US 19860903183 03.09.1986 US 19860903314 03.09.1986 US 19860903341 (71) Applicant: MOBIL OIL CORPORATION New York New York 10017 (US)

(72) Inventors: DWYER, Francis, Gerard West Chester, PA 19380 (US) HERBST, Joseph, Anthony Turnersville, NJ 08012 (US) HUANG, Yun-Yang Voorhees, NJ 08043 (US) OWEN, Hartley Belle Mead, NJ 08502 (US) SCHIPPER, Paul, Herbert Wilmington, DE 19810 (US) SCHWARTZ, Albert, B. Philadelphia, PA 19103 (US) (74) Representative: Colmer, Stephen Gary  Mobil Services Company Limited Patent Department Mobil House 50-60 Victoria Street London SW1E 6QB London SW1E 6QB (GB)