EP 1292719 A1 20030319 - ADHESION PROMOTER IN CONVERSION SOLUTIONS
Title (en)
ADHESION PROMOTER IN CONVERSION SOLUTIONS
Title (de)
HAFTVERMITTLER IN KONVERSIONSLÖSUNGEN
Title (fr)
AGENT ADHESIF DANS DES SOLUTIONS POUR CONVERSION
Publication
Application
Priority
- DE 10030462 A 20000621
- EP 0106546 W 20010609
Abstract (en)
[origin: WO0198557A1] The invention relates to an aqueous solution for producing a conversion coating on metal surfaces. The solution has a pH value of 1.5 to 6 and contains complex fluorides of Ti, Zr, Hf, Si and/or B in quantities corresponding to a Ti, Zr, Hf, Si and/or B content of 20 to 500 mg/l; and 0.1 to 2 g/l adhesion-promoting coating additives. The composition of the aqueous solution is selected with the aim of ensuring that no crystalline zincous phosphate layer appears on the metallic surface. The coating additive preferably contains an element M selected from the following: B, Al, Si, Ti and Zr. At least one hydroxyl group and or one or more organic radicals is/are preferably bonded to said element. The organic radical or organic radicals R is/are chosen, independently of each other, from hydrocarbon radicals with 3 to 16 C-atoms or radicals (CH2)x-Y, x meaning a whole number from 1 to 10 and Y representing a hydroxyl group, a mercapto group, a primary or secondary amino group, a carboxyl group, an acrylic or methacrylic acid radical or an oxirane group or a molecule fragment containing one or more of the aforementioned groups or acid radicals, respectively.
IPC 1-7
IPC 8 full level
B05D 3/10 (2006.01); B05D 7/14 (2006.01); C23C 22/34 (2006.01)
CPC (source: EP US)
C23C 22/34 (2013.01 - EP US)
Citation (search report)
See references of WO 0198557A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 0198557 A1 20011227; AU 7965101 A 20020102; DE 10030462 A1 20020103; EP 1292719 A1 20030319; JP 2004501280 A 20040115; US 2004020564 A1 20040205
DOCDB simple family (application)
EP 0106546 W 20010609; AU 7965101 A 20010609; DE 10030462 A 20000621; EP 01957837 A 20010609; JP 2002504701 A 20010609; US 31209802 A 20021220