To provide a crystalline polymer microporous membrane which is excellent in water resistance and ion adsorptivity, has high hydrophilicity, long filtering life and an excellent permeation flow rate, and to provide a production method of the crystalline polymer microporous membrane capable of efficiently producing the crystalline polymer microporous membrane and a filtration filter using the crystalline polymer microporous membrane.
The crystalline polymer microporous membrane comprises fibrils; the lengthwise length of the fibrils is 2 μm or more; at least a portion of the exposed surface of the crystalline polymer microporous membrane is covered with a radical polymer formed by polymerizing a composition containing a radical-polymerizable monomer; a functional compound containing at least an ion-exchange group and/or a chelating group is formed by an addition reaction at least a portion of the radical polymer; and the radical-polymerizable monomer is at least one selected from an acrylate, an acrylamide, an acrylic, and derivatives thereof.
YAMAZAKI KAZUKI
| JP2010058026A | 2010-03-18 | |||
| JP2010155233A | 2010-07-15 | |||
| JP2008119662A | 2008-05-29 | |||
| JPH11501961A | 1999-02-16 | |||
| JP2009297702A | 2009-12-24 | |||
| JPH09511948A | 1997-12-02 |
Yoshihiro Nagare
Naoko Matsuda