(19)

(11)

EP 3 218 086 A1

(12)

(43) Date of publication: 20.09.2017 Bulletin 2017/38 (21) Application number: 15790942.5 (22) Date of filing: 06.11.2015

(51) International Patent Classification (IPC):  B01D 53/04(2006.01) (86) International application number: PCT/EP2015/075871 (87) International publication number: WO 2016/075033 (19.05.2016 Gazette 2016/20)

(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 Designated Validation States: MA MD (30) Priority: 10.11.2014 EP 14192535 (71) Applicant: Akzo Nobel Chemicals International B.V. 6824 BM Arnhem (NL)	(72) Inventors: JOVIC, Slavisa NL-3332 CS Zwijndrecht (NL) VAN DER SCHAAF, John NL-3332 BT Zwijndrecht (NL) DE GROOT, Matheus Theodorus NL-3581 RN Utrecht (NL) (74) Representative: Akzo Nobel IP Department  Velperweg 76 6824 BM Arnhem 6824 BM Arnhem (NL)