Porous membrane, blood purifying module incorporating porous membrane, and method for producing porous membrane
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United States of America Patent
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Jun 12, 2018
Issued Date -
Aug 4, 2016
app pub date -
Sep 26, 2014
filing date -
Sep 30, 2013
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Abstract
The purpose of the present invention is to provide a porous membrane that has both high water permeability and excellent protein fractionation performance. Provided is a method for producing a porous membrane, said method comprising a step for discharging a membrane-forming dope that contains a hydrophilic polymer from a slit formed in a mouthpiece, and a step for, after the passage of the discharged membrane-forming dope through a dry part, solidifying the membrane-forming dope in a coagulation bath to give a porous membrane, wherein the cross-section area of the slit is 3-30 times inclusive as large as the cross-section area of the solidified porous membrane.
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