Polymer membrane for separating mixtures of gases

Details Polymer membrane for separating mixtures of gases Polymer membrane for separating mixtures of gases

B - Operations, Transporting

01

D

B01D 53/22 (2006.01) B01D 61/36 (2006.01) B01D 67/00 (2006.01) B01D 69/08 (2006.01) B01D 71/68 (2006.01) C01B 3/50 (2006.01)

Patent

CA 2380119

The membrane of the invention comprises asymmetric hollow fiber, obtained from polyethersulfur for pervaporation purposes, and treated with mixtures of liquids (C2H50H+X) wherein X is toluene, acetone, dimethylformamide with a content between 7 and 12 % by volume of the mixture, and further treated with a solution at 2.5 % by volume of urethane siloxane in isopropylic alcohol.

L'invention concerne une membrane composée d'une fibre creuse asymétrique, mise au point à partir de polyéthersulfure à des fins de pervaporation, traitée avec un mélange de liquides (C2H50H+X), mélange dans lequel X=toluène, acétone, ou diméthyl formamide, correspondant à 7 à 12 % du volume du mélange, puis traitée avec une dissolution à 2,5 % en volume d'uréthane siloxane dans de l'alcool isopropylique.

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