Porous polyvinylidene fluoride resin film and process for producing the same
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United States of America Patent
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Oct 9, 2001
Grant Date -
N/A
app pub date -
Dec 16, 1999
filing date -
Jun 22, 1998
priority date (Note) -
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Abstract
A porous hollow fiber polyvinylidene fluoride resin membrane, characterized in that the membrane has a unitary three-dimensional network structure entirely composed of a polyvinylidene fluoride resin and has an inside diameter of 1.5-5 mm and a wall thickness of 0.5-2 mm and in that the relationship between membrane bubble point and water flux per unit wall thickness is on or above the curve shown in FIG. 1.
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