(19)

(11)

EP 0 437 538 A1

(12)

(43) Date of publication: 24.07.1991 Bulletin 1991/30 (21) Application number: 89912068.0 (22) Date of filing: 26.09.1989

(51) International Patent Classification (IPC):  C07D( . ) A01N 47/ 38( . ) C07D 231/ 06( . ) C07D 491/ 048( . ) C07D 495/ 04( . ) A01N 43/ 56( . ) A01N 53/ 08( . ) C07D 231/ 54( . ) C07D 491/ 052( . ) C07F 9/ 6503( . ) (86) International application number: PCT/US1989/004078 (87) International publication number: WO 1990/003369 (05.04.1990 Gazette 1990/08)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 27.09.1988 US 19880249881 27.09.1988 US 19880249882 25.01.1989 US 19890304011 (71) Applicant: E.I. DU PONT DE NEMOURS AND COMPANY Wilmington Delaware 19898 (US)	(72) Inventors: FAHMY, Mohamed, Abdel, Hamid Wilmington, DE 19803 (US) HARRISON, Charles, Richard Newark, De 19702 (US) LAHM, George, Philip Wilmington, DE 19808 (US) STEVENSON, Thomas, Martin Newark, DE 19702 (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)