(19)

(11)

EP 0 658 155 A1

(12)

(43) Date of publication: 21.06.1995 Bulletin 1995/25 (21) Application number: 94923325.0 (22) Date of filing: 05.07.1994

(51) International Patent Classification (IPC):  B01J 23/ 42( . ) B01J 23/ 46( . ) B01J 23/ 755( . ) C07C 41/ 28( . ) B01J 23/ 44( . ) B01J 23/ 74( . ) C07B 61/ 00( . ) C07C 43/ 10( . ) (86) International application number: PCT/US1994/007517 (87) International publication number: WO 1995/001949 (19.01.1995 Gazette 1995/04)

(84) Designated Contracting States: AT BE DE ES FR GB IT NL SE (30) Priority: 07.07.1993 US 19930087977 (71) Applicant: BP Chemicals Limited London EC2M 7BA (GB)	(72) Inventors: CIRJAK, Larry, M. Burton, OH 44021 (US) KLIEWER, Wayne, R. Solon, OH 44139 (US) BARTOSZEK-LOZA, Rosemary Solon, OH 44139 (US) (74) Representative: Krishnan, Suryanarayana Kalyana  BP INTERNATIONAL LIMITED Patents & Agreements Division Chertsey Road Sunbury-on-Thames Middlesex TW16 7LN Sunbury-on-Thames Middlesex TW16 7LN (GB)