(19)

(11)

EP 2 606 175 A1

(12)

(43) Date of publication: 26.06.2013 Bulletin 2013/26 (21) Application number: 11770836.2 (22) Date of filing: 18.08.2011

(51) International Patent Classification (IPC):  D21C 9/147(2006.01) (86) International application number: PCT/FI2011/050721 (87) International publication number: WO 2012/022840 (23.02.2012 Gazette 2012/08)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (30) Priority: 18.08.2010 FI 20105862 (71) Applicant: Åbo Akademi University 20500 Åbo (FI)	(72) Inventors: FARDIM, Pedro FI-20810 Turku (FI) EKROOS, Malin 825 80 Iggesund (SE) (74) Representative: Turun Patenttitoimisto Oy  P.O. Box 99 20521 Turku 20521 Turku (FI)