Air dried cellulose acetate membranes

Details Air dried cellulose acetate membranes Air dried cellulose acetate membranes

B - Operations, Transporting

01

D

18/25, 117/88.5

B01D 69/06 (2006.01) B01D 61/14 (2006.01) B01D 61/36 (2006.01) B01D 67/00 (2006.01) B01D 71/16 (2006.01) F26B 5/00 (2006.01)

Patent

CA 1323150

Docket No.: 270-P-USO3850 AIR DRIED CELLULOSE ACETATE MEMBRANES ABSTRACT OF THE INVENTION The method of preparing dried asymmetric cellulose acetate blend membranes through the use of at least one drying agent which is a hydrophobic organic compound, such as polysiloxanes, hydrocarbons, ethers, ketones, chlorohydrocarbons or nitrohydrocarbons. The membranes are dried from their aqueous state by direct evaporation of water. The resulting air dried membranes are suitable for the desalination of water by reverse osmosis, non- aqueous liquid separation, ultrafiltration, pervaporation, and for the separation of various gaseous mixtures into their constituent parts.

588920

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