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(11)

EP 1 735 290 A1

(12)

(43) Date of publication: 27.12.2006 Bulletin 2006/52 (21) Application number: 05702518.1 (22) Date of filing: 17.02.2005

(51) International Patent Classification (IPC):  C07D 251/68(2006.01) D21H 21/30(2006.01) (86) International application number: PCT/IB2005/000407 (87) International publication number: WO 2005/092868 (06.10.2005 Gazette 2005/40)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR (30) Priority: 05.03.2004 EP 04005210 (71) Applicant: Clariant Finance (BVI) Limited Road Town, Tortola (VG)	(72) Inventor: JACKSON, Andrew Clive HARROGATE HG3 1EJ (GB) (74) Representative: Herrmann, Jörg  Clariant International Ltd Rothausstrasse 61 4132 Muttenz 1 4132 Muttenz 1 (CH)