(19)

(11)

EP 1 702 109 A2

(12)

(88) Date of publication A3: 09.09.2005 (43) Date of publication: 20.09.2006 Bulletin 2006/38 (21) Application number: 04805226.0 (22) Date of filing: 22.12.2004

(51) International Patent Classification (IPC):  D21H 21/16(2006.01) (86) International application number: PCT/FI2004/050195 (87) International publication number: WO 2005/061796 (07.07.2005 Gazette 2005/27)

(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: 23.12.2003 FI 20031896 (71) Applicants: Ciba Specialty Chemicals Holding Inc. 4057 Basel (CH) UPM-Kymmene Corporation 00130 Helsinki (FI)	(72) Inventors: TAMMI, Anna-Liisa FI-21530 Paimio (FI) LAITILA, Mika 13210 Hämeenlinna (FI) (74) Representative: Lalli, Esko et al Ciba Specialty Chemicals Oy, P.O.Box 250 21201 Raisio 21201 Raisio (FI)