Process for modifying porous polymeric membrane

Details Process for modifying porous polymeric membrane Process for modifying porous polymeric membrane

C - Chemistry, Metallurgy

08

J

18/32

C08J 9/36 (2006.01) B01D 67/00 (2006.01) B01D 71/64 (2006.01) B01D 71/68 (2006.01)

Patent

CA 1206308

- 40 - PROCESS FOR MODIFYING POROUS POLYMERIC MEMBRANE ABSTRACT OF THE DISCLOSURE A modified polymeric membrane having an excellent separating property is produced by applying, to a porous polymeric membrane, a volatile treating liquid containing a modifying agent which consists of at least one member selected from: (A) volatile dissolving organic liquids each capable of dissolving therein at least 1% by weight of the porous polymeric membrane at a temperature of 25°C; and (B) volatile shrinking organic liquids each capable of causing the porous polymeric membrane to shrink at a shrinkage of 3% or more.

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