(19)

(11)

EP 0 876 099 A1

(12)

(43) Date of publication: 11.11.1998 Bulletin 1998/46 (21) Application number: 96935094.0 (22) Date of filing: 28.10.1996

(51) International Patent Classification (IPC):  A01N 31/ 14( . ) C07C 43/ 29( . ) (86) International application number: PCT/GB1996/002622 (87) International publication number: WO 1997/016067 (09.05.1997 Gazette 1997/20)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 30.10.1995 GB 19950022144 (71) Applicant: BRITISH TECHNOLOGY GROUP LIMITED London EC4M 7SB (GB)	(72) Inventors: KHAMBAY, Bhupinder, Pall, Singh Southall, Middlesex UB2 4LW (GB) CAHILL, Matthew, Robert Harpenden, Herts AL5 1RE (GB) (74) Representative: England, Christopher David  British Technology Group Limited, 10 Fleet Place London EC4M 7SB London EC4M 7SB (GB)