METHOD FOR PROTECTING SUBSTRATES AND REMOVING CONTAMINANTS FROM SUCH SUBSTRATES
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United States of America Patent
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Issued Date -
Dec 25, 2008
app pub date -
Jun 19, 2008
filing date -
Jun 19, 2007
priority date (Note) -
Abandoned
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Abstract
This invention relates to a method for removing contaminant material (e.g., graffiti) from a substrate, comprising: applying a coating composition to the substrate, the coating composition comprising water, a water-soluble film forming polymer, a wetting agent and a thixotropic additive; dehydrating the aqueous composition and/or crosslinking the polymer to form a sacrificial barrier coating; depositing the contaminant material on the barrier coating; and removing at least part of the barrier coating and the contaminant material from the substrate.
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