(19)

(11)

EP 0 515 525 A1

(12)

(43) Date of publication: 02.12.1992 Bulletin 1992/49 (21) Application number: 91904908.0 (22) Date of filing: 24.01.1991

(51) International Patent Classification (IPC):  A01N 33/ 06( . ) A01N 37/ 00( . ) A01N 43/ 40( . ) C07C 217/ 58( . ) C07C 255/ 58( . ) C07C 317/ 32( . ) C07C 323/ 32( . ) C07D 213/ 74( . ) A01N 33/ 10( . ) A01N 43/ 30( . ) C07C 211/ 52( . ) C07C 217/ 84( . ) C07C 271/ 12( . ) C07C 317/ 36( . ) C07C 323/ 36( . ) C07D 405/ 12( . ) (86) International application number: PCT/US1991/000371 (87) International publication number: WO 1991/012228 (22.08.1991 Gazette 1991/19)

(84) Designated Contracting States: DE ES FR GB IT (30) Priority: 09.02.1990 US 19900477786 (71) Applicant: E.I. DU PONT DE NEMOURS AND COMPANY Wilmington Delaware 19898 (US)	(74) Representative: Hildyard, Edward Martin  Frank B. Dehn & Co. European Patent Attorneys Imperial House 15-19 Kingsway London WC2B 6UZ London WC2B 6UZ (GB)