Method of treating semipermeable membranes

Details Method of treating semipermeable membranes Method of treating semipermeable membranes

B - Operations, Transporting

01

D

117/88.5

B01D 67/00 (2006.01)

Patent

CA 1060285

ABSTRACT OF THE DISCLOSURE A method of improving the rejection performance of semipermeable membranes by incorporating thereinto an effective amount of a supplemental polymer containing a substantial amount of acetyl groups. A suitable supplement polymer is a co- polymer of vinyl acetate and one or more reactants, such as maleic acid or a half-ester thereof, crotonic acid, and lower alkyl esters of acrylic acid. The copolymer may be stabilized by subsequent treatment with a multivalent cation.

222355

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