(19)

(11)

EP 1 062 194 A1

(12)

(43) Date of publication: 27.12.2000 Bulletin 2000/52 (21) Application number: 99911129.7 (22) Date of filing: 05.03.1999

(51) International Patent Classification (IPC)7: C07C 17/386, C07C 23/06 (86) International application number: PCT/US9904/818 (87) International publication number: WO 9944/973 (10.09.1999 Gazette 1999/36)

(84) Designated Contracting States: DE ES FR GB IT NL (30) Priority: 05.03.1998 US 76923 P (71) Applicant: E.I. DU PONT DE NEMOURS AND COMPANY WilmingtonDelaware 19898 (US)	(72) Inventors: KAO, Chien-Ping, Chai Newark, DE 19711 (US) MAHLER, Barry, Asher Glen Mills, PA 19342 (US) MILLER, Ralph, Newton Newark, DE 19711 (US) (74) Representative: Matthews, Derek Peter et al Frank B. Dehn & Co.,European Patent Attorneys,179 Queen Victoria Street London EC4V 4EL London EC4V 4EL (GB)