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EP 4 118 254 A1

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(43) Date of publication: 18.01.2023 Bulletin 2023/03 (21) Application number: 21705527.6 (22) Date of filing: 17.02.2021

(51) International Patent Classification (IPC):  C23F 11/10(2006.01) C10M 173/02(2006.01) C23F 11/08(2006.01) C09K 5/20(2006.01) C10M 173/00(2006.01) C23F 11/14(2006.01) C09K 5/10(2006.01) (52) Cooperative Patent Classification (CPC): C23F 11/144; C23F 11/10; C10M 173/00; C23F 11/08; C10N 2040/20; C10N 2030/12; C10N 2040/245; C10N 2040/246; C10M 2219/044; C10M 2215/04; C10M 2219/085; C10M 2207/126; C10M 2207/127; C10M 2223/00; C10M 2223/06; C10N 2050/01; C10M 141/06 (86) International application number: PCT/EP2021/053871 (87) International publication number: WO 2021/165311 (26.08.2021 Gazette 2021/34)

(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: 17.02.2020 LU 101645 (71) Applicants: Metall-Chemie Technologies GmbH 20355 Hamburg (DE) Universität Hamburg 20148 Hamburg (DE)	(72) Inventors: KIPPHARDT, Helmut 22359 Hamburg (DE) NAUNDORF, Tim 20146 Hamburg (DE) RUF, Erik 20146 Hamburg (DE) MAISON, Wolfgang 20146 Hamburg (DE) (74) Representative: Hamm&Wittkopp Patentanwälte PartmbB  Jungfernstieg 38 20354 Hamburg 20354 Hamburg (DE)