(19)

(11)

EP 0 605 554 A1

(12)

(43) Date of publication: 13.07.1994 Bulletin 1994/28 (21) Application number: 92920205.0 (22) Date of filing: 25.09.1992

(51) International Patent Classification (IPC):  C07C 51/ 567( . ) C11D 3/ 37( . ) D06L 3/ 02( . ) C08G 67/ 04( . ) C11D 3/ 39( . ) (86) International application number: PCT/GB1992/001770 (87) International publication number: WO 1993/006203 (01.04.1993 Gazette 1993/09)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IE IT LI NL SE (30) Priority: 27.09.1991 GB 19910020644 (71) Applicant: WARWICK INTERNATIONAL GROUP LIMITED(2660720) Leeds LS12 4JE (GB)	(72) Inventors: TOWNEND, John Holywell Clwyd CH8 7SW (GB) CROWTHER, Jan, Darrel Prestatyn Clwyd LL19 8SH (GB) (74) Representative: Jones, Helen Marjorie Meredith, et al  Gill Jennings & Every, Broadgate House, 7 Eldon Street London EC2M 7LH London EC2M 7LH (GB)