Non-chromate corrosion inhibitor formulas based on permanganate sodalite compositions
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United States of America Patent
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Sep 27, 2011
Grant Date -
Mar 19, 2009
app pub date -
Sep 16, 2008
filing date -
Sep 18, 2007
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Expired
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Abstract
Sodalite is synthesized in the presence of a stoichiometric quantity of Permanganate ion. After thorough washing to remove trace salts the resulting pigment may be encapsulated with amorphous silica using the Iler process. The resulting pigment has enhanced acid stability and provides excellent corrosion protection on reactive metal substrates such as Aerospace Aluminum or Coil grade Hot-Dip Galvanized Steel.
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