EP 3676419 B1 20231011 - IMPROVED METHOD FOR NICKEL-FREE PHOSPHATING OF METALLIC SURFACES
Title (en)
IMPROVED METHOD FOR NICKEL-FREE PHOSPHATING OF METALLIC SURFACES
Title (de)
VERBESSERTES VERFAHREN ZUR NICKELFREIEN PHOSPHATIERUNG VON METALLISCHEN OBERFLÄCHEN
Title (fr)
PROCÉDÉ AMÉLIORÉ DE PHOSPHATAGE SANS NICKEL DES SURFACES MÉTALLIQUES
Publication
Application
Priority
- EP 17188783 A 20170831
- EP 2018073056 W 20180828
Abstract (en)
[origin: WO2019042951A1] The present invention relates to a method for the substantially nickel-free phosphating of a metal surface, in which a metal surface is treated with the following compositions one after the other: i) with an alkaline, aqueous cleaning agent composition, which contains at least a water-soluble silicate, and ii) with an acidic, aqueous, substantially nickel-free phosphating composition, which comprises zinc ions, manganese ions and phosphate ions. The invention also relates to the above cleaning agent composition itself and to a metal surface phosphate-coated by means of the above method and use thereof.
IPC 8 full level
C23C 22/13 (2006.01); C11D 1/00 (2006.01); C11D 7/14 (2006.01); C11D 7/16 (2006.01); C11D 7/26 (2006.01); C11D 7/36 (2006.01); C11D 11/00 (2006.01); C23C 22/18 (2006.01); C23C 22/36 (2006.01); C23C 22/78 (2006.01); C23C 22/80 (2006.01); C23C 22/83 (2006.01); C23G 1/16 (2006.01); C23G 1/18 (2006.01); C23G 1/20 (2006.01); C11D 7/10 (2006.01)
CPC (source: EP KR US)
C11D 7/105 (2013.01 - KR US); C11D 7/14 (2013.01 - EP KR US); C11D 7/16 (2013.01 - EP KR); C11D 7/265 (2013.01 - EP KR US); C11D 7/36 (2013.01 - EP KR); C23C 22/364 (2013.01 - EP KR); C23C 22/365 (2013.01 - US); C23C 22/78 (2013.01 - EP KR US); C23C 22/80 (2013.01 - EP KR); C23C 22/83 (2013.01 - EP KR); C23G 1/16 (2013.01 - EP KR); C23G 1/18 (2013.01 - EP KR US); C11D 7/105 (2013.01 - EP); C11D 2111/16 (2024.01 - EP KR US); C11D 2111/20 (2024.01 - US)
Designated contracting state (EPC)
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
DOCDB simple family (publication)
WO 2019042951 A1 20190307; BR 112020002882 A2 20201006; CN 111065761 A 20200424; EP 3676419 A1 20200708; EP 3676419 B1 20231011; ES 2966844 T3 20240424; JP 2021501829 A 20210121; JP 7279019 B2 20230522; KR 20200045487 A 20200504; MX 2020002343 A 20200713; RU 2020111711 A 20210930; RU 2020111711 A3 20220202; US 11643731 B2 20230509; US 2020199758 A1 20200625
DOCDB simple family (application)
EP 2018073056 W 20180828; BR 112020002882 A 20180828; CN 201880056072 A 20180828; EP 18756454 A 20180828; ES 18756454 T 20180828; JP 2020512581 A 20180828; KR 20207005575 A 20180828; MX 2020002343 A 20180828; RU 2020111711 A 20180828; US 201816640581 A 20180828