Selectively ion-adsorptive, porous membrane having side chains c

Details Selectively ion-adsorptive, porous membrane having side chains c Selectively ion-adsorptive, porous membrane having side chains c

1989-06-09

1991-11-12

Page, Thurman K.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Ion-exchange polymer or process of preparing

521 30, 521 31, 521 32, C08J 520

Patent

active

050648667

ABSTRACT:
A selectively ion-adsorptive, porous membrane comprising a membranous, porous resin matrix of a hydrophobic polyolefin or a hydrophobic copolymer of an olefin and a halogenated olefin and a plurality of side chains chemically 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 mechanical strength. Therefore, the porous membrane of the present invention can advantageously be used for industrial applications, such as pharmacy, fermentation and the like.

REFERENCES:
patent: 3247133 (1966-04-01), Chen
patent: 3741945 (1973-06-01), Bourat
patent: 3751376 (1973-08-01), Ouertin
patent: 4137137 (1979-01-01), Machi et al.
patent: 4196065 (1980-04-01), Gaussens et al.
patent: 4794002 (1988-12-01), Henis et al.

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