(19)

(11)

EP 0 629 201 A1

(12)

(43) Date of publication: 21.12.1994 Bulletin 1994/51 (21) Application number: 93906122.0 (22) Date of filing: 26.02.1993

(51) International Patent Classification (IPC):  C07D 307/ 81( . ) C07C 251/ 86( . ) C07D 211/ 20( . ) C07D 211/ 70( . ) C07D 273/ 04( . ) C07D 471/ 04( . ) C07D 491/ 052( . ) A01N 47/ 38( . ) C07D 211/ 18( . ) C07D 211/ 46( . ) C07D 211/ 74( . ) C07D 401/ 12( . ) C07D 491/ 04( . ) (86) International application number: PCT/US1993/001532 (87) International publication number: WO 1993/018038 (16.09.1993 Gazette 1993/22)

(84) Designated Contracting States: DE ES FR GB IT (30) Priority: 02.03.1992 US 19920843378 (71) Applicant: E.I. DU PONT DE NEMOURS AND COMPANY Wilmington Delaware 19898 (US)	(72) Inventor: LOWDER, Patrick, Doyle New Castle, DE 19720 (US) (74) Representative: Hildyard, Edward Martin  Frank B. Dehn & Co. Imperial House 15-19 Kingsway London WC2B 6UZ London WC2B 6UZ (GB)