Chromium-free aluminum treatment

Details Chromium-free aluminum treatment Chromium-free aluminum treatment

B - Operations, Transporting

05

D

B05D 7/16 (2006.01) B05D 7/14 (2006.01) C23C 22/34 (2006.01)

Patent

CA 2171131

A method of forming a protective coating on aluminum and aluminum alloy surfaces to improve adherence of siccative coatings such as inks, paints, and lacquers. The method involves rinsing acid treatments from aluminum surfaces followed by coating the aluminum surfaces with a polymeric composition. The method provides improved adhesion of siccative coverings to treated aluminum surfaces over chrome containing and non-chrome containing fluoroacid and polymer mixture treatments.

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