EP 2459770 B1 20150513 - MULTI-STAGE METHOD FOR THE TREATMENT OF METAL SURFACES PRIOR TO ELECTRODEPOSITION
Title (en)
MULTI-STAGE METHOD FOR THE TREATMENT OF METAL SURFACES PRIOR TO ELECTRODEPOSITION
Title (de)
MEHRSTUFIGES VERFAHREN ZUR BEHANDLUNG VON METALLOBERFLÄCHEN VOR EINER TAUCHLACKIERUNG
Title (fr)
PROCÉDÉ EN PLUSIEURS ÉTAPES POUR LE TRAITEMENT DES SURFACES DE MÉTAL AVANT UNE ÉLECTRODÉPOSITION
Publication
Application
Priority
- DE 102009028025 A 20090727
- EP 2010060053 W 20100713
Abstract (en)
[origin: WO2011012443A1] The present invention relates to a multistage method for the corrosion-protective and adhesion-promoting treatment of metal surfaces comprising a first method step for passivating pretreatment using an acid aqueous composition (A) containing water-soluble compounds of Zr and/or Ti and fluoride ions, a subsequent method step for post-treatment using an aqueous composition (B) containing at least one organic compound having at least one aromatic heterocyclic compound, wherein the aromatic heterocyclic compound has at least one nitrogen atom. The invention further relates to a metal surface treated according to the method according to the invention and the use of said treated metal surface for subsequent coating with an organic binding agent system.
IPC 8 full level
C23C 22/34 (2006.01); C23C 22/83 (2006.01); C25D 11/24 (2006.01); C25D 13/20 (2006.01)
CPC (source: EP US)
C23C 22/34 (2013.01 - EP US); C23C 22/83 (2013.01 - EP US); C25D 11/246 (2013.01 - EP US); C25D 13/20 (2013.01 - EP US)
Citation (opposition)
Opponent : Dr. Fernau
- US 5401337 A 19950328 - CARLSON LAWRENCE R [US], et al
- US 2008230394 A1 20080925 - INBE TOSHIO [JP], et al
- WO 2007065645 A1 20070614 - HENKEL KGAA [DE], et al
- EP 1571237 A1 20050907 - NIHON PARKERIZING [JP], et al
- US 3964936 A 19760622 - DAS NARAYAN
- M.M. ANTONIJEVIC ET AL.: "?Copper Corrosion Inhibitors. A review.", INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE, vol. 3, 2008, pages 1 - 28, XP055166729
- M.A. QURAISHI ET AL.: "?Influence of substituted benzothiazoles on corrosion in acid solution", JOURNAL OF APPLIED ELECTROCHEMISTRY, vol. 26, 1996, pages 1253 - 1258, XP055267559
- "?Lehrbuch der Lacktechnologie", Hannover, article BROCK ET AL., pages: 288 - 294, XP055267574
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 SE SI SK SM TR
DOCDB simple family (publication)
DE 102009028025 A1 20110203; AU 2010278178 A1 20120223; AU 2010278178 B2 20151210; BR 112012001698 A2 20160412; CN 102482783 A 20120530; EP 2459770 A1 20120606; EP 2459770 B1 20150513; ES 2544980 T3 20150907; JP 2013500393 A 20130107; JP 5684255 B2 20150311; RU 2012106611 A 20130910; US 2012186986 A1 20120726; US 8557096 B2 20131015; WO 2011012443 A1 20110203
DOCDB simple family (application)
DE 102009028025 A 20090727; AU 2010278178 A 20100713; BR 112012001698 A 20100713; CN 201080032653 A 20100713; EP 10734099 A 20100713; EP 2010060053 W 20100713; ES 10734099 T 20100713; JP 2012522084 A 20100713; RU 2012106611 A 20100713; US 201213358873 A 20120126