Document Type and Number:
Japanese Patent JPS4922497
Kind Code:
A
Abstract:
1424046 Dialysis; ultrafiltration COMMISSARIAT A L'ENERGIE ATOMIQUE 9 April 1973 [21 April 1972] 16951/73 Heading B1X [Also in Division C3] An ion-exchange or selective semi-permeable membrane is made of a porous organic polymer which has been subjected to irradiation with heavy nuclear particles, capable of prodE viding at least the initial - (as defined) dX value of the polymer, grafted with an ethylenically unsaturated monomer and made porous by reaction with a base or oxidizer which reacts preferentially with the irradiated damaged material. The membranes may be used in electrodialysis, ultra- or hyper-filtration, renal purification, separation of proteins and desalination of water. The membranes may be formed into a tube. In the examples the porous polymers consisted of (a) films of cellulose triacetate, polycarbonate, polyethylene terephthalate, polyvinyl chloride or polyimides, or a tube of polypropylene were grafted with (b) vinyl-2-pyridine, acrylic acid, acrylonitrile or styrene.
Application Number:
JP4564873A
Publication Date:
February 27, 1974
Filing Date:
April 21, 1973
Export Citation:
International Classes:
B01D67/00; C08F251/00; C08F291/00; C08J7/12; C08J9/00; C08J9/26; (IPC1-7): C08G17/14