(19)

(11)

EP 2 331 476 A1

(12)

(43) Date of publication: 15.06.2011 Bulletin 2011/24 (21) Application number: 09749160.9 (22) Date of filing: 28.09.2009

(51) International Patent Classification (IPC):  C04B 14/10(2006.01) C04B 18/02(2006.01) (86) International application number: PCT/FI2009/050770 (87) International publication number: WO 2010/037903 (08.04.2010 Gazette 2010/14)

(84) Designated Contracting States: 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 SE SI SK SM TR Designated Extension States: AL BA RS (30) Priority: 01.10.2008 FI 20085927 (71) Applicant: Kautar Oy 37630 Valkeakoski (FI)	(72) Inventor: VIRTANEN, Pentti FI-37630 Valkeakoski (FI) (74) Representative: Sundman, Patrik Christoffer  Seppo Laine Oy Itämerenkatu 3 B 00180 Helsinki 00180 Helsinki (FI)