(19)

(11)

EP 0 809 617 A1

(12)

(43) Date of publication: 03.12.1997 Bulletin 1997/49 (21) Application number: 96902368.0 (22) Date of filing: 15.02.1996

(51) International Patent Classification (IPC):  C06B 25/ 34( . ) C06D 5/ 00( . ) C06B 45/ 00( . ) C06D 5/ 06( . ) (86) International application number: PCT/GB1996/000328 (87) International publication number: WO 1996/025375 (22.08.1996 Gazette 1996/38)

(84) Designated Contracting States: DE ES FR GB IT SE (30) Priority: 16.02.1995 GB 19950003066 (71) Applicant: Royal Ordnance plc Euxton Chorley Lancashire PR7 6AD (GB)	(72) Inventors: DAVIES, David, Gerald Tarleton Lancashire PA4 6JL (GB) ROBERTSON, John Lancashire PR5 3PJ (GB) PHILLIPS, Mark, Inigo Somerset TA8 2AT (GB) (74) Representative: Wildman, David Brian  Royal Ordnance plc IPR & Contracts Policy Department Lancaster House P.O. Box 87 Farnborough Aerospace Centre Farnborough, Hants GU14 6YU Farnborough, Hants GU14 6YU (GB)