MICROPOROUS POLYOLEFIN MEMBRANE AND METHOD FOR PRODUCING THE SAME
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United States of America Patent
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Issued Date -
Apr 16, 2009
app pub date -
Mar 29, 2006
filing date -
Mar 31, 2005
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Abstract
The microporous polyolefin membrane obtained by stretching a gel molding comprising a polyolefin and a membrane-forming solvent at least uniaxially, heat-setting it, removing the membrane-forming solvent, and re-stretching it at least uniaxially has a large pore diameter and excellent air permeability, mechanical strength and compression resistance.
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