EP 2532769 A1 20121212 - Method of producing a chromium-free conversion coating on a surface of an aluminium or aluminium alloy strip
Title (en)
Method of producing a chromium-free conversion coating on a surface of an aluminium or aluminium alloy strip
Title (de)
Verfahren zur Herstellung von Chrom-frei Konversionsschicht auf einer Oberfläche von Aluminium- oder Aluminiumlegierungsband
Title (fr)
Procédé de production dune couche de conversion sur une surface dune bande d'aluminium ou d'alliage d'aluminium
Publication
Application
Priority
EP 11004742 A 20110610
Abstract (en)
In a method of producing an aluminium or aluminium alloy strip with a heat-seal lacquer on a first surface and an epoxide based stove lacquer on the second surface, a chromium-free conversion coating is produced on the first and second surface of the aluminium or aluminium alloy strip in a continuous production line before applying the hot seal lacquer and the stove lacquer, the chromium-free conversion coating is produced by (A) a no-rinse process by treatment with a solution of silanes in a polar organic solvent, or a no-rinse process by treatment with an aqueous solution of 5 to 10 wt.-% hexafluorotitanic acid (H 2 TiF 6 ) and 2.5 to 5 wt.-% hexafluorozirconic acid (H 2 ZrF 6 ), or (B) a rinse process by treatment with an aqueous solution of < 1 wt.-% diammonium dimolybdate ((NH 4 ) 2 Mo 2 O 7 ) and 5 to 10 wt.-% hexafluorozirconic acid (H 2 ZrF 6 ).
IPC 8 full level
B05D 7/14 (2006.01); B65D 77/20 (2006.01); B65D 85/804 (2006.01); C09D 5/08 (2006.01); C23C 22/02 (2006.01); C23C 22/34 (2006.01); C23C 22/44 (2006.01); C23C 22/73 (2006.01); C23C 22/74 (2006.01); C23C 22/76 (2006.01); C23C 22/83 (2006.01)
CPC (source: EP)
C23C 22/02 (2013.01); C23C 22/34 (2013.01); C23C 22/44 (2013.01); C23C 22/73 (2013.01); C23C 22/74 (2013.01); C23C 22/76 (2013.01); C23C 22/83 (2013.01)
Citation (applicant)
- US 5129967 A 19920714 - SANDER LOTHAR S [US], et al
- US 4921552 A 19900501 - SANDER LOTHAR S [US], et al
- EP 0008942 A1 19800319 - AMCHEM PROD [US]
- DE 2433704 C3 19810521
- US 4992116 A 19910212 - HALLMAN LYDIA [US]
- WO 9207973 A1 19920514 - HENKEL CORP [US]
- DE 4317217 A1 19941201 - HENKEL KGAA [DE]
- US 4136073 A 19790123 - MURO KAKURO, et al
- US 5868872 A 19990209 - KARMASCHEK UWE [DE], et al
Citation (search report)
- [X] EP 2048203 A1 20090415 - MAX PLANCK GESELLSCHAFT [DE]
- [I] US 2004062873 A1 20040401 - JUNG CHRISTIAN [DE], et al
- [I] US 6346295 B1 20020212 - RIESOP JOERG [DE], et al
- [I] US 2009214883 A1 20090827 - DE ZEEUW ARD [DE], et al
- [A] EP 1859926 A1 20071128 - BOREALIS TECH OY [FI]
- [A] US 2010055327 A1 20100304 - GAILLARD GERARD [FR], et al
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 2532769 A1 20121212; EP 2718479 A1 20140416; EP 2718479 B1 20180314; ES 2668270 T3 20180517; HR P20180845 T1 20180907; PL 2718479 T3 20181031; WO 2012167889 A1 20121213
DOCDB simple family (application)
EP 11004742 A 20110610; EP 12725321 A 20120601; EP 2012002324 W 20120601; ES 12725321 T 20120601; HR P20180845 T 20180528; PL 12725321 T 20120601