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EP 4 041 936 A1

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(43) Date of publication: 17.08.2022 Bulletin 2022/33 (21) Application number: 20764184.6 (22) Date of filing: 10.08.2020

(51) International Patent Classification (IPC):  C23C 22/34(2006.01) C25D 13/20(2006.01) C23C 22/78(2006.01) C09D 5/44(2006.01) (52) Cooperative Patent Classification (CPC): C23C 22/34; C25D 13/20; C23C 22/73 (86) International application number: PCT/US2020/045656 (87) International publication number: WO 2021/071575 (15.04.2021 Gazette 2021/15)

(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: KH MA MD TN (30) Priority: 10.10.2019 US 201962913482 P 10.10.2019 US 201962913500 P (71) Applicant: PPG Industries Ohio Inc. Cleveland, OH 44111 (US)

(72) Inventors: ALLEN, Kristi M. Pittsburgh, Pennsylvania 15201 (US) HARRIS, Rachel D. Pittsburgh, Pennsylvania 15201 (US) MARTIN, Justin J. Harrison City, Pennsylvania 15636 (US) LEMON, Steven J. Burrell, Pennsylvania 15068 (US) BEZER, Silvia Gibsonia, Pennsylvania 15044 (US) MCMILLEN, Mark W. Cabot, Pennsylvania 16023 (US) (74) Representative: f & e patent  Braunsberger Feld 29 51429 Bergisch Gladbach 51429 Bergisch Gladbach (DE)