EP 2318566 A1 20110511 - SUCCESSIVE CORROSION-PROTECTING PRE-TREATMENT OF METAL SURFACES IN A MULTI-STEP PROCESS
Title (en)
SUCCESSIVE CORROSION-PROTECTING PRE-TREATMENT OF METAL SURFACES IN A MULTI-STEP PROCESS
Title (de)
SUKZESSIVE KORROSIONSSCHÜTZENDE VORBEHANDLUNG VON METALLOBERFLÄCHEN IN EINEM MEHRSTUFENPROZESS
Title (fr)
PRÉTRAITEMENT PROGRESSIF ANTICORROSION DE SURFACES MÉTALLIQUES DANS UN PROCÉDÉ EN PLUSIEURS ÉTAPES
Publication
Application
Priority
- EP 2009060063 W 20090804
- DE 102008038653 A 20080812
Abstract (en)
[origin: WO2010018102A1] The present invention relates to a method for optimizing the corrosion-protecting pre-treatment of metal surfaces and using rinse water in a manner to conserve resources in such a corrosion-protecting pre-treatment, comprising a conversion treatment step using an aqueous composition comprising at least 50 ppm of the elements B, Si, Ti, Zr and/or Hf in the form of water-soluble compounds at a pH of 3 to 5.5, wherein a minimum fraction of 10 ppm of the elements B, Si, Ti, Zr and/or Hf in the form of water-soluble compounds is present in the last pre-rinse step and a portion of the aqueous composition of the conversion treatment step is contained in the first post-rinse step. The resource-conserving use of the rinse water is accomplished according to the invention by way of a cascaded return of rinse water from the last rinse step to the first rinse step. The present invention also relates to a metallic component treated using the method according to the invention and to the use thereof in a process for applying a multi-coating system, in particular a paint system containing an organic binder, in industrial manufacturing.
IPC 8 full level
C23C 22/73 (2006.01); C23C 22/34 (2006.01)
CPC (source: EP US)
C23C 22/06 (2013.01 - US); C23C 22/34 (2013.01 - EP US); C23C 22/361 (2013.01 - US); C23C 22/73 (2013.01 - EP US); C23C 22/77 (2013.01 - US); C23C 22/78 (2013.01 - US); C23C 22/80 (2013.01 - US)
Citation (search report)
See references of WO 2010018102A1
Designated contracting state (EPC)
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
Designated extension state (EPC)
AL BA RS
DOCDB simple family (publication)
WO 2010018102 A1 20100218; BR PI0914553 A2 20151215; BR PI0914553 B1 20190514; CA 2733977 A1 20100218; CA 2733977 C 20160628; CN 102124144 A 20110713; CN 102124144 B 20140806; DE 102008038653 A1 20100325; EP 2318566 A1 20110511; EP 2318566 B1 20150318; ES 2539576 T3 20150702; HU E026110 T2 20160530; PL 2318566 T3 20150831; US 2011189401 A1 20110804; US 8679586 B2 20140325
DOCDB simple family (application)
EP 2009060063 W 20090804; BR PI0914553 A 20090804; CA 2733977 A 20090804; CN 200980131546 A 20090804; DE 102008038653 A 20080812; EP 09781448 A 20090804; ES 09781448 T 20090804; HU E09781448 A 20090804; PL 09781448 T 20090804; US 201113017241 A 20110131