EP 2917383 A1 20150916 - CAN PRETREATMENT FOR IMPROVED COAT ADHESION
Title (en)
CAN PRETREATMENT FOR IMPROVED COAT ADHESION
Title (de)
DOSENVORBEHANDLUNG ZUR VERBESSERTEN LACKHAFTUNG
Title (fr)
PRÉTRAITEMENT DE BOÎTES POUR UNE MEILLEURE ADHÉRENCE DE VERNIS
Publication
Application
Priority
- DE 102012220384 A 20121108
- EP 2013073324 W 20131108
Abstract (en)
[origin: CA2890159A1] The present invention relates to the use of an aqueous composition for pretreating can body stock, in the course of which an inorganic-organic conversion layer is formed, which, as such, effects outstanding sliding behaviour of the shaped can body stock and in addition offers an outstanding holding primer for subsequent coating. The invention comprises in this case a process in which the can body stock which is deep drawn to form the half-open can cylinder, before further shaping processes, is contacted with an acidic aqueous composition which contains water-soluble inorganic compounds of the elements Zr, Ti, Si, Hf or Ce, water-soluble polymers having carboxyl groups or hydroxyl groups and also a dispersed wax. Both the outer and the inner surfaces of metallic can cylinders can be pretreated in the process according to the invention. In addition, the invention relates to an acidic aqueous composition that is particularly suitable in the pretreatment process, which aqueous composition contains water-soluble polymers selected from condensation products of glycoluril and aldehydes. In addition, a production process for can cylinders comprising the pretreatment according to the invention is described.
IPC 8 full level
C23C 22/34 (2006.01); B05D 7/16 (2006.01); B21D 22/20 (2006.01); B21D 51/26 (2006.01); C09D 5/08 (2006.01); C23C 22/36 (2006.01); C23C 22/73 (2006.01); C23C 22/83 (2006.01)
CPC (source: EP US)
B21D 22/201 (2013.01 - EP US); B21D 51/263 (2013.01 - US); C23C 22/34 (2013.01 - EP US); C23C 22/361 (2013.01 - EP US); C23C 22/73 (2013.01 - EP US); C23C 22/83 (2013.01 - EP US); B21D 51/26 (2013.01 - EP US)
Citation (search report)
See references of WO 2014072443A1
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)
DE 102012220384 A1 20140508; AU 2013343558 A1 20150528; AU 2013343558 B2 20170803; BR 112015010095 A2 20170711; CA 2890159 A1 20140515; CN 104769158 A 20150708; CN 104769158 B 20171024; EP 2917383 A1 20150916; EP 2917383 B1 20160921; ES 2608633 T3 20170412; JP 2016505707 A 20160225; JP 6267222 B2 20180124; KR 20150081359 A 20150713; PL 2917383 T3 20170331; US 10870923 B2 20201222; US 2015232997 A1 20150820; US 2017051412 A1 20170223; US 9512524 B2 20161206; WO 2014072443 A1 20140515
DOCDB simple family (application)
DE 102012220384 A 20121108; AU 2013343558 A 20131108; BR 112015010095 A 20131108; CA 2890159 A 20131108; CN 201380057738 A 20131108; EP 13788983 A 20131108; EP 2013073324 W 20131108; ES 13788983 T 20131108; JP 2015543380 A 20131108; KR 20157015129 A 20131108; PL 13788983 T 20131108; US 201514702160 A 20150501; US 201615346787 A 20161109