Membranes

Details Membranes Membranes

C - Chemistry, Metallurgy

02

F

402/320, 400/810

C02F 1/44 (2006.01) C08G 75/20 (2006.01) C08J 5/00 (2006.01) C08J 9/28 (2006.01) C08L 81/06 (2006.01)

Patent

CA 1262994

H32942 Abstract Membranes Divalent metal salts of sulphonated polyarylethersulphones and solutions thereof in a specified solvent mixture, for example a mixture of an alkylene carbonate, an ether and a carboxylic acid, hydroxy-substituted hydrocarbon compound or water can be used to produce membranes, such as asymmetric semi-permeable membranes for reverse osmosis. The divalent metal may be an alkaline earth metal, particularly barium. Membranes having a desirable combination of nigh salt rejection at a high water flux are also disclosed. These membranes may be used for the desalination of sea water and purification of brackish waters and industrial effluents.

468558

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