Chromium-free aluminum treatment

Details Chromium-free aluminum treatment Chromium-free aluminum treatment

1995-10-11

1997-06-24

Lusignan, Michael

Coating processes

With pretreatment of the base

Preapplied reactant or reaction promoter or hardener

148247, 148251, 427327, 427421, 427428, 427435, B05D 304, B05D 310

Patent

active

056415427

ABSTRACT:
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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