Concrete coloring compositions and methods
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United States of America Patent
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Jan 10, 2012
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N/A
app pub date -
Nov 7, 2008
filing date -
May 10, 2007
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Abstract
The present invention provides acidic compositions and methods that are adapted to impart color to cementitious or mineral substrate surfaces. Specifically, the present invention relates to acidic compositions and methods adapted to treat cementitious or mineral substrate surfaces that have the advantage of using a less corrosive acid-based solution. The acidic composition incorporates species including a weak base in equilibrium with a conjugate acid. The presence of such species moderates the corrosive behavior of the acid while still allowing excellent coloring action to occur.
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