(19)

(11)

EP 0 973 764 A1

(12)

(43) Date of publication: 26.01.2000 Bulletin 2000/04 (21) Application number: 98904923.4 (22) Date of filing: 05.02.1998

(51) International Patent Classification (IPC)7: C07D 335/06, C07D 337/08, C07D 409/12, C07D 409/06, C07D 409/14, C07D 413/06, A01N 43/18, A01N 43/50, A01N 43/56 (86) International application number: PCT/US9802/168 (87) International publication number: WO 9835/954 (20.08.1998 Gazette 1998/33)

(84) Designated Contracting States: DE FR GB IT (30) Priority: 14.02.1997 US 38735 P (71) Applicant: E.I. DU PONT DE NEMOURS AND COMPANY WilmingtonDelaware 19898 (US)	(72) Inventor: TSENG, Chi-Ping Wilmington, DE 19803 (US) (74) Representative: Beacham, Annabel Rose et al Frank B. Dehn & Co.,European Patent Attorneys,179 Queen Victoria Street London EC4V 4EL London EC4V 4EL (GB)