Multifunctional powder material for protecting buildings and process for the same
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United States of America Patent
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Feb 15, 1994
Grant Date -
N/A
app pub date -
Mar 18, 1992
filing date -
Jul 9, 1991
priority date (Note) -
Expired
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Abstract
The present invention discloses a multifunctional powder material for protecting buildings and process for the same. Said multifunctional powder material contains fine powders of refined limestone, dolomite and marble, a straight-chain alkyl acid or a straight-chain alkane containing 16-25 carbon atoms hydrophobic agent packed closely on the whole surfaces of said powders, the usage of said hydrophobic agent is at least 0.3 percent by weight (based on the total weight of the mixture of said powders).
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