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EP 3 068 521 A1

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(43) Date of publication: 21.09.2016 Bulletin 2016/38 (21) Application number: 14789757.3 (22) Date of filing: 20.10.2014

(51) International Patent Classification (IPC):  B01D 67/00(2006.01) B01D 71/08(2006.01) B01D 71/44(2006.01) B01D 71/02(2006.01) B01D 69/14(2006.01) B01D 71/26(2006.01) B01D 71/58(2006.01) B01D 61/14(2006.01) (86) International application number: PCT/US2014/061326 (87) International publication number: WO 2015/073161 (21.05.2015 Gazette 2015/20)

(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 (30) Priority: 12.11.2013 US 201314077741 (71) Applicant: PPG Industries Ohio, Inc. Cleveland, OH 44111 (US)

(72) Inventors: GUO, Qunhui Murrysville, Pennsylvania 15668 (US) KNOX, Carol, L. Apollo, Pennsylvania 15613 (US) DUFFY, Shawn, P. Cheswick, Pennsylvania 15024 (US) PARRINELLO, Luciano, M. Allison Park, Pennsylvania 15101 (US) PARISE, Nicholas, J. Pittsburgh, Pennsylvania 15237 (US) REARICK, Brian, K. Allison Park, Pennsylvania 15101 (US) (74) Representative: f & e patent  Fleischer, Engels & Partner mbB, Patentanwälte Braunsberger Feld 29 51429 Bergisch Gladbach 51429 Bergisch Gladbach (DE)