(19)

(11)

EP 2 670 904 A1

(12)

(43) Date of publication: 11.12.2013 Bulletin 2013/50 (21) Application number: 12703488.2 (22) Date of filing: 31.01.2012

(51) International Patent Classification (IPC):  D06M 13/13(2006.01) D06M 13/352(2006.01) D06M 13/358(2006.01) D06M 15/65(2006.01) D04C 1/12(2006.01) D07B 1/14(2006.01) D06M 13/224(2006.01) D06M 13/355(2006.01) D06M 15/643(2006.01) D06M 15/653(2006.01) D07B 1/02(2006.01) (86) International application number: PCT/EP2012/051560 (87) International publication number: WO 2012/104302 (09.08.2012 Gazette 2012/32)

(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: 31.01.2011 EP 11152724 (71) Applicant: DSM IP Assets B.V. 6411 TE Heerlen (NL)	(72) Inventors: GIJSMAN, Pieter NL-6191 NM Beek (NL) VLASBLOM, Martin Pieter NL-6229 HC Maastricht (NL) ABEN, Gerardus NL-6065 BN Montfort (NL) SCHNEIDERS, Hans NL-6271 AH Gulpen (NL) (74) Representative: Steffanie, Leonardus Gerardus  DSM Intellectual Property Geleen Office P.O. Box 4 6100 AA Echt 6100 AA Echt (NL)