EP 3448938 A1 20190306 - METHOD FOR ANTI-CORROSION TREATMENT OF A METAL SURFACE WITH REDUCED PICKLING MATERIAL
Title (en)
METHOD FOR ANTI-CORROSION TREATMENT OF A METAL SURFACE WITH REDUCED PICKLING MATERIAL
Title (de)
VERFAHREN ZUR KORROSIONSSCHÜTZENDEN BEHANDLUNG EINER METALLISCHEN OBERFLÄCHE MIT VERMINDERTEM BEIZABTRAG
Title (fr)
PROCÉDÉ DE TRAITEMENT ANTICORROSION D'UNE SURFACE MÉTALLIQUE À ENLÈVEMENT RÉDUIT DE MATIÈRE DÉCAPÉE
Publication
Application
Priority
- DE 102016207431 A 20160429
- EP 2017060229 W 20170428
Abstract (en)
[origin: WO2017186931A1] The present invention relates to a method for anti-corrosion treatment of a metal surface, wherein the surface is successively brought into contact with the following aqueous compositions: i) an alkaline or acidic cleaning composition, ii) a first rinsing composition, iii) if required, a second rinsing composition, iv) an acidic conversion composition, v) if required, a third rinsing composition, and vi) a composition containing a (meth)acrylate-based and/or epoxy-based KTL, wherein at least one of the compositions i) to v) contains at least one compound of the formula (I), and wherein R1 and R2 are in each case independently of one another H or an HO- (CH2)w group with w ≥ 2, x and y in each case independently of one another are 1 to 4, and Z is an S atom or a C-C triple bond. The invention further relates to an aqueous composition for reducing the removal of pickling material in the anti-corrosion treatment of metal surfaces.
IPC 8 full level
C09D 5/08 (2006.01); C09D 5/44 (2006.01); C23C 22/06 (2006.01); C23C 22/34 (2006.01)
CPC (source: EP KR RU US)
C09D 5/08 (2013.01 - EP KR RU); C09D 5/12 (2013.01 - US); C09D 5/44 (2013.01 - EP); C09D 133/10 (2013.01 - US); C09D 163/00 (2013.01 - US); C23C 22/34 (2013.01 - EP KR US); C23C 22/62 (2013.01 - KR); C23C 22/73 (2013.01 - EP US); C23F 11/173 (2013.01 - US); C23G 1/19 (2013.01 - EP KR); C23G 1/20 (2013.01 - EP KR); C23G 1/22 (2013.01 - KR); C23C 2222/20 (2013.01 - EP KR US)
Citation (search report)
See references of WO 2017186931A1
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
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2017186931 A1 20171102; BR 112018071503 A2 20190219; CN 109071973 A 20181221; DE 102017207237 A1 20171102; EP 3448938 A1 20190306; JP 2019515134 A 20190606; JP 7034090 B2 20220311; KR 102373768 B1 20220315; KR 20190002469 A 20190108; MX 2018013229 A 20190213; RU 2018141059 A 20200529; RU 2018141059 A3 20200923; RU 2754070 C2 20210825; US 2021222013 A1 20210722; US 2022119650 A9 20220421
DOCDB simple family (application)
EP 2017060229 W 20170428; BR 112018071503 A 20170428; CN 201780024292 A 20170428; DE 102017207237 A 20170428; EP 17723944 A 20170428; JP 2018556915 A 20170428; KR 20187030704 A 20170428; MX 2018013229 A 20170428; RU 2018141059 A 20170428; US 201716097169 A 20170428