(19)

(11)

EP 2 997 089 A1

(12)

(43) Date of publication: 23.03.2016 Bulletin 2016/12 (21) Application number: 14797348.1 (22) Date of filing: 09.05.2014

(51) International Patent Classification (IPC):  C08L 27/06(2006.01) C08K 3/36(2006.01) C08K 3/22(2006.01) C08K 5/541(2006.01) (86) International application number: PCT/FI2014/050345 (87) International publication number: WO 2014/184429 (20.11.2014 Gazette 2014/47)

(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 Designated Extension States: BA ME (30) Priority: 13.05.2013 FI 20135502 (71) Applicant: Teknologian tutkimuskeskus VTT Oy 02150 Espoo (FI)	(72) Inventors: SAARIMÄKI, Eetta FI-02044 Vtt (FI) HÄRKKI, Outi FI-02044 Vtt (FI) (74) Representative: Boco IP Oy Ab  Itämerenkatu 5 00180 Helsinki 00180 Helsinki (FI)