Reverse osmosis membrane, casting solution, and processes...

Details Reverse osmosis membrane, casting solution, and processes... Reverse osmosis membrane, casting solution, and processes...

C - Chemistry, Metallurgy

08

J

18/14, 18/27, 40

C08J 5/22 (2006.01) B01D 67/00 (2006.01) B01D 69/02 (2006.01) B01D 71/56 (2006.01) C08G 69/32 (2006.01) C08L 77/10 (2006.01)

Patent

CA 1268886

TITLE REVERSE OSMOSIS MEMBRANE, CASTING SOLUTION, AND PROCESSES FOR MAKING SAME ABSTRACT A casting solution of polyaramide in N,N-dimethylacetamide containing about 10 to 60% by wt. MgCl2, based on polyaramide, and a process for making such casting solution, are provided. An asymmetric permselective membrane and process for making such membrane from the casting solution are also provided. Such membrane has excellent performance characteristics in a reverse osmosis process for purifying salt water.

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