(19)
(11) EP 4 314 385 A1

(12)

(43) Date of publication:
07.02.2024 Bulletin 2024/06

(21) Application number: 22717406.7

(22) Date of filing: 01.04.2022
(51) International Patent Classification (IPC): 
C23C 22/12(2006.01)
C23C 22/46(2006.01)
C23C 22/10(2006.01)
 C23C 22/66(2006.01)
C10M 173/02(2006.01)
(52) Cooperative Patent Classification (CPC):
C23C 22/66; C23C 22/12; C23C 22/46; C10M 173/02; C23C 22/10; C10N 2040/243; C10N 2040/246; C10N 2040/245; C10N 2020/04; C10M 2217/028; C10M 2207/123; C10M 2201/085; C10M 2201/081; C10M 2201/062; C10N 2010/04; C10N 2010/16; C10N 2050/02; C10M 2209/084; C10M 2217/022; C10M 2209/04; C10M 2217/024; C10M 2205/14; C10M 2205/16; C10M 2205/18; C10N 2040/24; C10M 2209/103; C10M 2215/08; C10M 2215/042; C10N 2080/00; C10N 2010/02; C10M 2215/202; C10N 2030/06; C10N 2030/12; C10N 2010/06
(86) International application number:
PCT/EP2022/058744
(87) International publication number:
WO 2022/207901 (06.10.2022 Gazette 2022/40)
(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: 01.04.2021 EP 21166607

(71) Applicant: Chemetall GmbH
60487 Frankfurt (DE)

(72) Inventors:
  • SHI, Yinfeng
    60487 Frankfurt am Main (DE)
  • ORBEN, Martin
    60487 Frankfurt am Main (DE)

(74) Representative: Steffan & Kiehne Patentanwälte PartG mbB 
Burgplatz 21-22
40213 Düsseldorf
40213 Düsseldorf (DE)

   


(54) ONE-STEP PRETREATMENT METHOD OF METALLIC SUBSTRATES AT NON-NEUTRAL PH VALUES FOR METAL COLD FORMING