Liquid separation membrane for pervaporation

Details Liquid separation membrane for pervaporation Liquid separation membrane for pervaporation

1987-01-07

1989-02-28

Cintins, Ivars

Liquid purification or separation

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Material

210640, B01D 1300, B01D 3916

Patent

active

048083135

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: 2953502 (1960-04-01), Binning et al.
patent: 3194727 (1965-07-01), Adams et al.
patent: 3959079 (1976-05-01), Mareschi 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
J. of Applied Polymer Science, vol. 26, 3223-3243 (1981).
J. Polymer Sci.: Symposium No. 41, 145-153 (1973).

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