(19)

(11)

EP 0 743 976 A1

(12)

(43) Date of publication: 27.11.1996 Bulletin 1996/48 (21) Application number: 95907747.0 (22) Date of filing: 07.02.1995

(51) International Patent Classification (IPC):  C07C 409/ 24( . ) C07C 409/ 30( . ) C07C 409/ 26( . ) C11D 3/ 39( . ) (86) International application number: PCT/GB1995/000247 (87) International publication number: WO 1995/021236 (10.08.1995 Gazette 1995/34)

(84) Designated Contracting States: BE DE ES FR GB IT NL (30) Priority: 07.02.1994 WO 1994GB00228 20.07.1994 GB 19940014625 (71) Applicant: WARWICK INTERNATIONAL GROUP LIMITED Holywell, Clwyd CH8 9HE (GB)	(72) Inventors: CROUD, Vincent, Brian Holywell Clwyd CH8 7HZ (GB) TOMPSETT, Stephen, James Trelawnyd Nr Rhyl Clwyd LL18 6DR (GB) (74) Representative: Jones, Helen Marjorie Meredith  Gill Jennings & Every, Broadgate House, 7 Eldon Street London EC2M 7LH London EC2M 7LH (GB)