Coating processes – Applying superposed diverse coating or coating a coated base – Metallic compound-containing coating
Patent
1991-01-24
1992-11-17
Lusignan, Michael
Coating processes
Applying superposed diverse coating or coating a coated base
Metallic compound-containing coating
427435, 427437, 4274431, 106 1412, 106 1414, B05D 136
Patent
active
051642344
ABSTRACT:
The adhesion and/or corrosion resistance of a autodeposited coating can be improved by rinsing the uncured coating with an aqueous treatment solution that has a pH between 7 and 11 and contains between 0.05 and 5 w/o of anions derived from phosphonic acids, preferably anions of 1-hydroxyethylidene-1,1-diphosphonic acid. The method is particularly useful on leaf springs and other metallic objects with surfaces of high carbon and/or shot blasted steel, and is particularly useful in conjunction with an autodeposition bath containing internally stabilized poly (vinylidene chloride) latex, hydrofluoric acid, ferric fluoride, and hydrogen peroxide.
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Dudash Diana L.
Henkel Corporation
Jaeschke Wayne C.
Lusignan Michael
Szoke Ernest G.
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