Pretreatment of metal surfaces prior to paint using polyaniline particles
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United States of America Patent
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May 12, 2015
Grant Date -
Oct 3, 2013
app pub date -
Mar 28, 2012
filing date -
Mar 28, 2012
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Abstract
Embodiments of a method of pretreating a metal substrate prior to painting comprise applying a first coating solution onto the metal substrate wherein the first coating solution comprises polyaniline particles at a pH less than 7 to yield a first coating on the metal substrate, rinsing the metal substrate to remove unreacted polyaniline particles, and applying a second coating solution post-rinse which comprises at least one acid and a silane composition at a pH less than 7 to yield a second coating on the metal substrate.
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