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EP 3 449 034 A1

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(43) Date of publication: 06.03.2019 Bulletin 2019/10 (21) Application number: 17721028.3 (22) Date of filing: 25.04.2017

(51) International Patent Classification (IPC):  C23C 22/07(2006.01) C23C 22/12(2006.01) C23C 22/78(2006.01) (86) International application number: PCT/US2017/029321 (87) International publication number: WO 2017/189519 (02.11.2017 Gazette 2017/44)

(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: 25.04.2016 US 201615137016 (71) Applicant: PPG Industries Ohio, Inc. Cleveland, OH 44111 (US)

(72) Inventors: MCMILLEN, Mark W. Cabot, Pennsylvania 16023 (US) LEMON, Steven J. Lower Burrell, Pennsylvania 15068 (US) VOTRUBA-DRZAL, Peter L. Pittsburgh, Pennsylvania 15208 (US) WEHRLE, Matthew E. Apollo, Pennsylvania 15613 (US) SILVERNAIL, Nathan J. Allison Park, Pennsylvania 15101 (US) KARABIN, Richard F. Ruffs Dale,Pennsylvania 15679 (US) (74) Representative: f & e patent  Braunsberger Feld 29 51429 Bergisch Gladbach 51429 Bergisch Gladbach (DE)