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(11)

EP 1 733 015 A1

(12)

(43) Date of publication: 20.12.2006 Bulletin 2006/51 (21) Application number: 05722230.9 (22) Date of filing: 16.03.2005

(51) International Patent Classification (IPC):  C11D 3/12(2006.01) C11D 17/00(2006.01) C11D 1/04(2006.01) (86) International application number: PCT/SE2005/000384 (87) International publication number: WO 2005/097961 (20.10.2005 Gazette 2005/42)

(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: 08.04.2004 EP 04445047 (71) Applicants: Akzo Nobel N.V. 6800 SB Arnhem (NL) Eka Chemicals AB 445 80 Bohus (SE) SE	(72) Inventors: GREENWOOD, Peter S-413 18 GOTEBORG (SE) LAGNEMO, Hans S-417 28 GÖTEBORG (SE) (74) Representative: Holmberg, Nils Anders Patrik et al Dr Ludwig Brann Patentbyra AB P.O. Box 17192 104 62 Stockholm 104 62 Stockholm (SE)