Modification of porous materials
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United States of America Patent
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-
Mar 5, 1996
Grant Date -
N/A
app pub date -
Mar 15, 1995
filing date -
May 29, 1992
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method of treating a porous material comprising establishing a pressure differential across the material and treating the higher pressure side with a suspension dispersion or aerosol of droplets of a liquid. The droplets enter at least some of the pores, with the treatment conditions being such that the aerodynamic forces within the pores exceed the surface tension forces maintaining the integrity of the droplets. The droplets thus spread to provide a surface coating within the pores.
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