POROUS MEMBRANE, BLOOD PURIFYING MODULE INCORPORATING POROUS MEMBRANE, AND METHOD FOR PRODUCING POROUS MEMBRANE

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 hydr...

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Bibliographische Detailangaben
Hauptverfasser: UENO, Yoshiyuki, HAYASHI, Akihiro, NOSAKA, Shiro
Format: Patent
Sprache:eng ; fre ; ger
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Beschreibung
Zusammenfassung: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.