| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a porous membrane excellent in chemical resistance and also excellent in filtering flow rate and a fractionation performance. <P>SOLUTION: A method for manufacturing the porous membrane includes: a film-forming stock solution preparation process for dissolving a chlorinated polyvinyl chloride to a solvent that is a good solvent to the chlorinated polyvinyl chloride and has the compatibility to water, and desirably further dissolving a compound (A) that is soluble to both the solvent and water to obtain a film-forming stock solution; a film-forming process for forming the film-forming stock solution in membrane to obtain an uncoagulated film; a moisture absorption process for retaining the uncoagulated film in air that contains water vapor to absorb moisture; and a coagulation process for coagulating the uncoagulated film in a congealed liquid after the moisture absorption process. <P>COPYRIGHT: (C)2013,JPO&INPIT |
