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(11)

EP 1 015 498 A1

(12)

(43) Date of publication: 05.07.2000 Bulletin 2000/27 (21) Application number: 98943418.8 (22) Date of filing: 27.08.1998

(51) International Patent Classification (IPC)7: C08B 37/14, C08B 37/06, C08L 5/14, C08B 30/04, D21C 1/00, C08H 1/00, C08H 5/00, C08H 5/02, C07G 1/00, C07K 1/00, C07G 17/00 (86) International application number: PCT/US9817/728 (87) International publication number: WO 9911/672 (11.03.1999 Gazette 1999/10)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 01.09.1997 GB 9718518 (71) Applicant: E.I. DU PONT DE NEMOURS AND COMPANY WilmingtonDelaware 19898 (US)	(72) Inventor: FITCHETT, Colin, Stanley Cambridge CB1 3AJ (GB) (74) Representative: Grant, Anne Rosemary  Frank B. Dehn & Co.179 Queen Victoria Street London EC4V 4EL London EC4V 4EL (GB)