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EP 0 762 933 A1

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(43) Date of publication: 19.03.1997 Bulletin 1997/12 (21) Application number: 94926183.0 (22) Date of filing: 11.08.1994

(51) International Patent Classification (IPC):  B01J 23/ 22( . ) C07D 213/ 84( . ) B01J 37/ 03( . ) (86) International application number: PCT/EP1994/002677 (87) International publication number: WO 1995/032054 (30.11.1995 Gazette 1995/51)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IE IT LI NL PT SE Designated Extension States: LT SI (30) Priority: 23.05.1994 KZ 19940005601 (71) Applicants: LONZA LTD. CH-3945 Gampel (CH) INSTITUTE OF CHEMICAL SCIENCE OF THE NATIONAL ACADEMY OF SCIENCE OF THE REPUBLIC KAZAKSTAN Almaty (KZ)

(72) Inventors: SUVOROV, Boris Viktorovitch Almaty, 480021 (KZ) STEPANOVA, Lidija Anatoljevna Almaty, 480012 (KZ) BELOVA, Nadezhda Antonovna Almaty, 480096 (KZ) CHUCK, Roderick, John CH-3902 Brig-Glis (CH) PIANZOLA, Daniel CH-3902 Brig-Glis (CH) (74) Representative: Weinhold, Peter, Dr., et al  Patentanwälte Dr. Weinhold, Dannenberg, Dr. Gudel, Schubert Siegfriedstrasse 8 80803 München 80803 München (DE)