Hydrophilized porous article
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United States of America Patent
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-
Dec 9, 1997
Grant Date -
N/A
app pub date -
May 1, 1996
filing date -
Jan 21, 1994
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A hydrophilic porous article is provided. The article comprises a hydrophobic porous substrate having coated on at least one external surface and on the internal surface a polyamide. Also provided is a method for making the hydrophilic porous article comprising forming a solvent solution of polyarnide in calcium chloride and methanol; treating a hydrophobic porous substrate by applying the solution to the substrate; rinsing the treated substrate with water to remove the calcium chloride and methanol; and drying the treated substrate.
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