Thin-film composite membrane

Details Thin-film composite membrane Thin-film composite membrane

B - Operations, Transporting

01

D

B01D 71/60 (2006.01) B01D 67/00 (2006.01) B01D 69/12 (2006.01) B01D 71/56 (2006.01) C02F 1/44 (2006.01) C08J 9/36 (2006.01)

Patent

CA 2135649

A thin-film semipermeable composite membrane employs the reaction product of N-alkyl phenylenediamine or N,N'-dial- kyl phenylenediamine and a poly acyl halide, such as trimesoyl chloride. Preferably the membrane is post-treated with an acid so- lution followed by an aqueous solution of polyvinyl alcohol and a buffer and/or base to improve its physical properties.

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