(19)

(11)

EP 0 396 693 A1

(12)

(43) Date of publication: 14.11.1990 Bulletin 1990/46 (21) Application number: 89912168.0 (22) Date of filing: 25.10.1989

(51) International Patent Classification (IPC):  B01J 31/ 20( . ) C07C 29/ 16( . ) C08F 8/ 06( . ) C07B 61/ 00( . ) C08F 8/ 00( . ) (86) International application number: PCT/US1989/004754 (87) International publication number: WO 1990/005711 (31.05.1990 Gazette 1990/12)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 14.11.1988 US 19880270360 (71) Applicant: AMOCO CORPORATION Chicago, IL 60680-0703 (US)	(72) Inventors: EATON, Bruce Edward Naperville, IL 60565 (US) KULZICK, Matthew Albert Warrenville, IL 60555 (US) PRETZER, Wayne Robert Wheaton, IL 60187 (US) NEMO, Thomas Edward Naperville, IL 60540 (US) (74) Representative: Baverstock, Michael George Douglas, et al  BOULT, WADE & TENNANT 27 Furnival Street London, EC4A 1PQ London, EC4A 1PQ (GB)