WATER-BASED POLYURETHANE PIGMENTED COATING
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United States of America Patent
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Issued Date -
Apr 1, 2010
app pub date -
Mar 14, 2008
filing date -
Mar 14, 2007
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Abstract
The present invention is a coating composition for coating materials, such as silica sand and other media, containing a water-based polyurethane dispersion, a colorant, and optional ingredients such as coalescing solvents and cross-linking agents, and a coated silica sand which is strong in color, lightfast, and resistant.
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