C - Chemistry – Metallurgy – 08 – J
Patent
C - Chemistry, Metallurgy
08
J
18/14, 402/154,
C08J 5/18 (2006.01) B01D 69/12 (2006.01) B01D 71/46 (2006.01) B01D 71/60 (2006.01) C08G 59/20 (2006.01) C08G 59/50 (2006.01)
Patent
CA 1134991
ABSTRACT OF THE DISCLOSURE A permeselective membrane comprising a thin permeselective film of a polymeric material, said polymeric material being prepared by cross-linking a polyaddition product between a polyepoxy compound and a polyamino compound having at least two amino groups capable of reacting with epoxy groups with a polyfunctional compound selected from the group consisting of aromatic, hetero- cyclic and alicyclic compounds containing at least two functional groups selected from acid halide, sulfonyl halide, isocyanate and acid anhydride groups; and a process for producing the same. The permselective membrane of this invention is especially useful for desalination of saline or brackish water by reverse osmosis.
303944
Hayashi Yuzuru
Kawaguchi Takeyuki
Mori Koh
Ono Tomoyoshi
Taketani Yutaka
Smart & Biggar
Teijin Limited
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