Solvent resistant asymmetric integrally skinned membranes

Details Solvent resistant asymmetric integrally skinned membranes Solvent resistant asymmetric integrally skinned membranes

B - Operations, Transporting

01

D

B01D 71/64 (2006.01) B01D 67/00 (2006.01) B01D 69/06 (2006.01) B01D 71/52 (2006.01) B01D 71/68 (2006.01)

Patent

CA 2435538

The invention relates to an asymmetric integrally skinned membrane comprising a polyimide and another polymer selected from the group consisting of polyvinylpyrrolidone, polyetheretherketone, sulfonated polyetherether ketone, sulfonated polyphenyleneoxide, sulfonated polysulfone, sulfonated polyethersulfone, sulfonated polyphenylquinoxaline and mixtures thereof. Such a membrane is substantially insoluble in organic solvents. The membrane according to the invention is useful as a vapor separation membrane.

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