(19)

(11)

EP 3 433 021 A2

(12)

(88) Date of publication A3: 07.12.2017 (43) Date of publication: 30.01.2019 Bulletin 2019/05 (21) Application number: 17711222.4 (22) Date of filing: 20.03.2017

(51) International Patent Classification (IPC):  B03D 1/008(2006.01) B03D 1/004(2006.01) B03D 1/01(2006.01) B03D 1/012(2006.01) (86) International application number: PCT/EP2017/056516 (87) International publication number: WO 2017/162563 (28.09.2017 Gazette 2017/39)

(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: 22.03.2016 EP 16161733 (71) Applicant: Akzo Nobel Chemicals International B.V. 6824 BM Arnhem (NL)	(72) Inventors: NORDBERG, Henrik SE-444 53 Stenungsund (SE) SMOLKO-SCHVARZMAYR, Natalija SE-471 72 Hjälteby (SE) SVENSSON, Magnus SE-444 46 Stenungsund (SE) (74) Representative: Akzo Nobel Chemicals IP Group  Velperweg 76 6824 BM Arnhem 6824 BM Arnhem (NL)