(19)

(11)

EP 0 796 146 A1

(12)

(43) Date of publication: 24.09.1997 Bulletin 1997/39 (21) Application number: 95938548.0 (22) Date of filing: 06.12.1995

(51) International Patent Classification (IPC):  B01J 23/ 44( . ) C07C 17/ 23( . ) C07B 61/ 00( . ) C07C 19/ 08( . ) (86) International application number: PCT/GB1995/002837 (87) International publication number: WO 1996/017683 (13.06.1996 Gazette 1996/27)

(84) Designated Contracting States: DE ES FR GB GR IT (30) Priority: 09.12.1994 GB 19940024904 13.12.1994 GB 19940025058 (71) Applicant: IMPERIAL CHEMICAL INDUSTRIES PLC London SW1P 3JF (GB)	(72) Inventors: SCOTT, John, David Cheshire CW8 2YQ (GB) GOODYEAR, Gary Merseyside L63 0PQ (GB) McCARTHY, John, Charles Cheshire WA5 2JN (GB) (74) Representative: Geary, Stephen, et al  Intellectual Property Department ICI Chemicals & Polymers Limited P.O. Box 11 The Heath Runcorn, Cheshire WA7 4QE Runcorn, Cheshire WA7 4QE (GB)