EP 2665847 A1 20131127 - PRETREATMENT OF TIN PLATED STEEL BEFORE LACQUERING
Title (en)
PRETREATMENT OF TIN PLATED STEEL BEFORE LACQUERING
Title (de)
VORBEHANDLUNG VON WEIßBLECH VOR EINER LACKIERUNG
Title (fr)
PRÉTRAITEMENT DE FER BLANC AVANT LAQUAGE
Publication
Application
Priority
- DE 102011002836 A 20110118
- EP 2011072708 W 20111214
Abstract (en)
[origin: WO2012097926A1] The invention relates to a method for the anti-corrosive pretreatment of tinplate, in which an anti-corrosive primer coating is applied in a single step, said primer coating effectively preventing the shiny metal surface of the pretreated tinplate from turning black when the pretreated tinplate of the invention that is provided with a coating lacquer is in contact with liquids releasing or containing sulfur compounds and with food containing protein. In the disclosed method, the tinplate is anodically polarized in an electrolyte containing silicates of formula M2O·nSiO2, where M is an alkali metal ion or quaternary ammonium ion and n is a natural number between 0.8 and 7. Tinplate pretreated according to the invention can be used in particular for the production of food-safe packaging such as beverage cans or tin cans.
IPC 8 full level
C25D 11/34 (2006.01)
CPC (source: EP US)
C25D 9/06 (2013.01 - US); C25D 11/34 (2013.01 - EP US)
Citation (search report)
See references of WO 2012097926A1
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)
DE 102011002836 A1 20120719; CN 103298982 A 20130911; CN 103298982 B 20160914; EP 2665847 A1 20131127; EP 2665847 B1 20150415; ES 2542619 T3 20150807; JP 2014506625 A 20140317; JP 5973464 B2 20160823; RS 54145 B1 20151231; US 2013192995 A1 20130801; US 9909227 B2 20180306; WO 2012097926 A1 20120726
DOCDB simple family (application)
DE 102011002836 A 20110118; CN 201180064860 A 20111214; EP 11808615 A 20111214; EP 2011072708 W 20111214; ES 11808615 T 20111214; JP 2013549742 A 20111214; RS P20150468 A 20111214; US 201313798353 A 20130313