Liquid separation membrane for pervaporation

Details Liquid separation membrane for pervaporation Liquid separation membrane for pervaporation

1988-12-14

1991-01-15

Cintins, Ivars

Liquid purification or separation

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Material

210640, 264 41, B01D 7108

Patent

active

049851470

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.

REFERENCES:
patent: 3959079 (1976-05-01), Mareschi et al.
patent: 3962158 (1976-06-01), Mima et al.
patent: 4035291 (1977-07-01), Chiang et al.
patent: 4067805 (1978-01-01), Chiang et al.
patent: 4199445 (1980-04-01), Chiang et al.
patent: 4329383 (1982-05-01), Joh

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