Improved membrane

Details Improved membrane Improved membrane

B - Operations, Transporting

01

D

B01D 71/68 (2006.01) B01D 67/00 (2006.01) B01D 71/52 (2006.01)

Patent

CA 2212526

A membrane with a hydrophilic surface formed from a polymer blend of a polysulphone and an ethylene oxide/propylene oxide copolymer with a molecular weight cut off of greater than 20,000 can be made by adding pore modifying agents to the polymer blend and/or pore enlarging agents to the quenching liquid used to cast the membrane from the polymer solution.

Une membrane, avec une surface hydrophile formée à partir d'un mélange polymère de polysulfone et de copolymère d'oxyde d'éthylène et d'oxyde de propylène avec une limite inférieure du poids moléculaire de plus 20000, peut être formée par addition d'agents modifiant la porosité au mélange de polymères et/ou d'agents capables d'élargir les pores au liquide de précipitation utilisé, lors de la formation de la membrane à partir d'une solution des polymères.

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