MICROPOROUS STRUCTURES AND PROCESS FOR PRODUCING THE SAME
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United States of America Patent
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N/A
Issued Date -
Jul 26, 2001
app pub date -
Sep 29, 1998
filing date -
Sep 30, 1997
priority date (Note) -
Abandoned
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Abstract
Microporous structures characterized by having a three-dimensional interconnecting network skeleton, which are obtained by comprising mixing a thermoplastic resin, a water-soluble organic compound and a water-soluble polymer material and then eliminating said water-soluble organic compound and said water-soluble polymer material by extracting with water. A process for producing microporous structures comprising mixing a thermoplastic resin with water-soluble components which contain a water-soluble organic compound and a water-soluble polymer material, at a specific volume ratio, thus forming a mixture having a three-dimensional interconnecting network skeleton made of said thermoplastic resin wherein said water-soluble components are maintained, bringing said mixture into contact with water and thus extracting and eliminating said water-soluble components from said mixture, wherein a volume ratio of the water-soluble organic compound to the water-soluble polymer material ranges from 35 to 95/65 to 5.
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