EP 2817434 A1 20141231 - PRE-TREATMENT OF ZINC SURFACES BEFORE PASSIVATION
Title (en)
PRE-TREATMENT OF ZINC SURFACES BEFORE PASSIVATION
Title (de)
VORBEHANDLUNG VON ZINKOBERFLÄCHEN VOR EINER PASSIVIERUNG
Title (fr)
PRÉTRAITEMENT DE SURFACES EN ZINC AVANT UNE PASSIVATION
Publication
Application
Priority
- EP 12156863 A 20120224
- EP 2013053522 W 20130222
- EP 13705479 A 20130222
Abstract (en)
[origin: EP2631333A1] Alkaline aqueous composition having a pH value of at least 8.5, comprises (a) at least 0.01 g/l of iron ions, (b) one or more water soluble organic carboxylic acids comprising at least one amino group at alpha -, beta - or gamma -position relative to the acid group and/or their water-soluble salts, and (c) one or more oxoacids of phosphorus or nitrogen and/or their water soluble salts, where at least one phosphorus atom or nitrogen atom is present in an average oxidation state. An independent claim is included for pretreating galvanized steel surfaces, comprising (i) optionally cleaning and degreasing the steel surfaces using an alkaline cleaning agent, (ii) contacting the steel surfaces with the alkaline composition, and (iii) subjecting the steel surfaces to passivating wet chemical conversion coatings.
IPC 8 full level
B05D 7/14 (2006.01); C23C 22/00 (2006.01); C23C 22/18 (2006.01); C23C 22/34 (2006.01); C23C 22/60 (2006.01); C23C 22/73 (2006.01); C23C 22/78 (2006.01); C23C 22/83 (2006.01); C23G 1/20 (2006.01)
CPC (source: EP US)
C23C 8/02 (2013.01 - US); C23C 8/40 (2013.01 - US); C23C 22/00 (2013.01 - EP US); C23C 22/182 (2013.01 - EP US); C23C 22/34 (2013.01 - EP US); C23C 22/60 (2013.01 - EP US); C23C 22/73 (2013.01 - EP US); C23C 22/78 (2013.01 - EP US); C23C 22/83 (2013.01 - EP US); C23C 2222/00 (2013.01 - US)
Citation (search report)
See references of WO 2013124400A1
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)
EP 2631333 A1 20130828; AU 2013224115 A1 20140911; AU 2013224115 B2 20170202; CA 2864467 A1 20130829; CA 2864467 C 20200505; CN 104185693 A 20141203; CN 104185693 B 20160629; EP 2817434 A1 20141231; EP 2817434 B1 20170201; EP 3093370 A1 20161116; EP 3093370 B1 20180117; ES 2624195 T3 20170713; ES 2658337 T3 20180309; HU E033958 T2 20180129; HU E038740 T2 20181128; JP 2015510550 A 20150409; JP 6526968 B2 20190612; KR 102095832 B1 20200401; KR 20140129238 A 20141106; PL 2817434 T3 20170731; PL 3093370 T3 20180731; US 10227686 B2 20190312; US 2014360630 A1 20141211; WO 2013124400 A1 20130829
DOCDB simple family (application)
EP 12156863 A 20120224; AU 2013224115 A 20130222; CA 2864467 A 20130222; CN 201380010446 A 20130222; EP 13705479 A 20130222; EP 16175371 A 20130222; EP 2013053522 W 20130222; ES 13705479 T 20130222; ES 16175371 T 20130222; HU E13705479 A 20130222; HU E16175371 A 20130222; JP 2014558113 A 20130222; KR 20147026388 A 20130222; PL 13705479 T 20130222; PL 16175371 T 20130222; US 201414466377 A 20140822