(19)

(11)

EP 1 756 232 A1

(12)

(43) Date of publication: 28.02.2007 Bulletin 2007/09 (21) Application number: 05739802.6 (22) Date of filing: 17.05.2005

(51) International Patent Classification (IPC):  C09B 67/00(2006.01) (86) International application number: PCT/IB2005/001492 (87) International publication number: WO 2005/116143 (08.12.2005 Gazette 2005/49)

(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: 26.05.2004 EP 04012458 (71) Applicant: CLARIANT INTERNATIONAL LTD. 4132 Muttenz 1 (CH)	(72) Inventor: OBERHOLZER, Martin CH-4108 Witterswil (CH) (74) Representative: Herrmann, Jörg et al Clariant International Ltd Rothausstrasse 61 4132 Muttenz 1 4132 Muttenz 1 (CH)