(19)

(11)

EP 0 658 163 A1

(12)

(43) Date of publication: 21.06.1995 Bulletin 1995/25 (21) Application number: 93920277.0 (22) Date of filing: 26.08.1993

(51) International Patent Classification (IPC):  A01N 43/ 90( . ) C07D 487/ 04( . ) (86) International application number: PCT/US1993/007926 (87) International publication number: WO 1994/005670 (17.03.1994 Gazette 1994/07)

(84) Designated Contracting States: DE ES FR GB IT (30) Priority: 01.09.1992 US 19920938808 15.04.1993 US 19930048704 (71) Applicant: E.I. DU PONT DE NEMOURS AND COMPANY Wilmington Delaware 19898 (US)	(72) Inventor: Mc CANN, Stephen, Frederick Newark, DE 19711-4381 (US) (74) Representative: Hildyard, Edward Martin, et al  Frank B. Dehn & Co. European Patent Attorneys Imperial House 15-19 Kingsway London WC2B 6UZ London WC2B 6UZ (GB)