Quaternary ammonium salts as a conversion coating or coating enhancement
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United States of America Patent
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Issued Date -
Jul 13, 2006
app pub date -
Dec 9, 2005
filing date -
Dec 9, 2004
priority date (Note) -
Abandoned
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Abstract
Disclosed are quaternary ammonium salts containing non-halogen anions such as carbonates, bicarbonates, phosphates, glycolates and mixtures thereof as conversion coatings or additives imparting anti-corrosive properties to paints. The invention relates to a method for inhibiting the corrosion of metal surfaces by applying a composition containing one or more quaternary ammonium carbonate or bicarbonate. The disclosure is also directed to anti-corrosive coatings for metal substrates containing these compounds and to metal substrates having these anticorrosive coatings.
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