(19)

(11)

EP 0 922 032 A1

(12)

(43) Date of publication: 16.06.1999 Bulletin 1999/24 (21) Application number: 97928809.0 (22) Date of filing: 02.06.1997

(51) International Patent Classification (IPC):  A01N 43/ 40( . ) A01N 43/ 78( . ) C07D 231/ 12( . ) C07D 277/ 24( . ) A01N 43/ 56( . ) C07D 213/ 50( . ) C07D 231/ 20( . ) C07D 401/ 10( . ) (86) International application number: PCT/US1997/009569 (87) International publication number: WO 1997/046530 (11.12.1997 Gazette 1998/01)

(84) Designated Contracting States: DE FR IT (30) Priority: 06.06.1996 US 19960019352P 20.12.1996 US 19960033633P (71) Applicant: E.I. DU PONT DE NEMOURS AND COMPANY Wilmington Delaware 19898 (US)	(72) Inventors: PATEL, Kanu, Maganbhai Wilmington, DE 19808 (US) RORER, Morris, Padgett Newark, DE 19711 (US) TSENG, Chi-Ping Wilmington, DE 19803 (US) (74) Representative: Woodman, Derek, et al  Frank B. Dehn & Co., European Patent Attorneys, 179 Queen Victoria Street London EC4V 4EL London EC4V 4EL (GB)