Surface modification method of calcite
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United States of America Patent
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Jun 20, 2017
Grant Date -
Oct 30, 2014
app pub date -
Apr 29, 2013
filing date -
Apr 24, 2013
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Abstract
Provided is a surface modification method of calcite powder prepared from desulfurized gypsum and heat-treated at a high temperature. According to the surface modification method, hydrophilic calcite powder having polarity may be changed into hydrophobic non-polar calcite powder by safely adsorbing a surface modifier onto a surface of the calcite powder and coating the surface with non-polar fatty acid. Particularly, in the case in which calcite powder heat-treated at a high temperature is hydrophobized, a significantly excellent hydrophobic surface property may be implemented.
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