(19)

(11)

EP 0 970 058 A1

(12)

(43) Date of publication: 12.01.2000 Bulletin 2000/02 (21) Application number: 98905527.2 (22) Date of filing: 19.02.1998

(51) International Patent Classification (IPC)7: C07D 251/70, D06M 13/358, D06P 1/642, D06P 5/22 (86) International application number: PCT/GB9800/526 (87) International publication number: WO 9839/308 (11.09.1998 Gazette 1998/36)

(84) Designated Contracting States: BE DE ES FR GB IE IT PT (30) Priority: 03.03.1997 GB 9704386 (71) Applicant: WOOL DEVELOPMENT INTERNATIONAL LIMITED Ilkley, LS29 8PBWest Yorkshire (GB)	(72) Inventors: LEWIS, David LeedsWest Yorkshire LS2 9JT (GB) CROFT, Stephen LeedsWest Yorkshire LS2 9JT (GB) (74) Representative: Wharton, Peter Robert  Urquhart-Dykes & LordTower HouseMerrion Way Leeds LS2 8PA Leeds LS2 8PA (GB)