Coating solution for metal surfaces
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United States of America Patent
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Nov 16, 2010
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app pub date -
Nov 3, 2008
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Nov 2, 2007
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Abstract
An aqueous metal treatment composition designed to improve adhesion and corrosion resistance of the metal surface includes an organofunctional silane in combination with a fluorozirconic or fluorotitanic acid, methanesulfonic acid and nitric acid. The methanesulfonic acid acts to reduce sludge formation. Preferably, the composition also includes a fluorosilicic acid which likewise reduces sludge and improves corrosion resistance.
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