Selectively ion-adsorptive, porous membrane

Details Selectively ion-adsorptive, porous membrane Selectively ion-adsorptive, porous membrane

C - Chemistry, Metallurgy

08

J

18/13, 204/91.37

C08J 5/20 (2006.01) B01D 67/00 (2006.01) C08J 5/22 (2006.01) C08J 7/18 (2006.01)

Patent

CA 1314666

ABSTRACT OF THE DISCLOSURE A selectively ion-adsorptive, porous membrane compri- sing a membranous, porous rosin matrix of a hydrophobic polyolefin or a hydrophobic copolymer of an olefin and a halogenated olefin and a plurality of side chains chemical- ly bonded to both surfaces, which in turn are inclusive of pore wall surfaces, of the membranous porous resin matrix is disclosed. The side chains collectively contain both neutral hydroxyl groups and ion exchange groups. The selectively ion-adsorptive, porous membrane is suitable for use in selective purification or selective removal of desired ionic substances including not only ionic inorganic substances but also an ionic organic substances, such as a protein and an amino acid, on a commercial scale. Further, the selectively ion-adsorptive, porous membrane has not only excellent heat resistance, but also excellent mechan- ical strength. Therefore, the porous membrane of the present invention can advantageously be used for industrial applications, such as pharmacy, fermentation and the like.

601656

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