(19)

(11)

EP 0 223 814 A1

(12)

(43) Date of publication: 03.06.1987 Bulletin 1987/23 (21) Application number: 86903503.0 (22) Date of filing: 04.06.1986

(51) International Patent Classification (IPC):  C07D 307/ 33( . ) C07B 61/ 00( . ) C07D 315/ 00( . ) B01J 23/ 86( . ) C07D 307/ 32( . ) (86) International application number: PCT/GB1986/000315 (87) International publication number: WO 1986/007358 (18.12.1986 Gazette 1986/27)

(84) Designated Contracting States: DE FR GB IT NL (30) Priority: 04.06.1985 GB 19850014001 (71) Applicant: DAVY McKEE (LONDON) LIMITED London NW1 2PG (GB)

(72) Inventors: TURNER, Keith 12 The Avenue Fairfield Cleveland (GB) SHARIF, Mohammad 19 Maidstone Drive Marton Cleveland (GB) RATHMELL, Colin 7 Mount Leven Road Cleveland (GB) KIPPAX, John, Wilson John Clapham House Firby North Yorkshire DL8 2PW (GB) CARTER, Anthony, Benjamin 37 Weston Crescent Cleveland (GB) SCARLETT, John 2 Cleveland View Kirk Merrington County Durham DL16 7JZ (GB) REASON, Arthur, James 30 Mereshead Sands Acklam Cleveland (GB) HARRIS, Norman 22 Grantham Road Cleveland (GB) (74) Representative: Eyles, Christopher Thomas, et al  BATCHELLOR, KIRK & CO. 2 Pear Tree Court Farringdon Road London, EC1R 0DS London, EC1R 0DS (GB)