Liquid separation membrane for pervaporation

Details Liquid separation membrane for pervaporation Liquid separation membrane for pervaporation

1988-11-29

1990-07-31

Cintins, Ivars

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

159DIG27, 203 19, B01D 6136

Patent

active

049448811

ABSTRACT:
A liquid separation membrane for pervaporation composed of a polymeric substance having in the main chain a glycosidic skeleton containing cationic groups and/or anionic groups at least some of which form a salt with counter anions and/or counter cations; and a method for pervaporation, which comprises separating a water-organic liquid mixture or an organic liquid-organic liquid mixture by pervaporation using a separation membrane, said membrane being composed of a polymeric substance having in the main chain a glycosidic skeleton containing cationic groups and/or anionic groups at least some of which form a salt with counter anions and/or counter cations and being dried so as to have a water content of not more than 25% by weight.

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patent: 4663050 (1987-05-01), Li et al.
J. of Applied Polymer Science, vol. 26, 3223-3243 (1981).
J. Polymer Sci.: Symposium No. 41, 145-153 (1973).

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