Charge mosaic membrane and production process thereof

B - Operations – Transporting – 01 – J

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B01J 47/12 (2006.01) B01D 69/12 (2006.01) B01J 13/02 (2006.01) C02F 1/42 (2006.01) C08G 81/02 (2006.01) C08J 3/24 (2006.01) C08J 5/22 (2006.01) C08J 7/16 (2006.01)

Patent

CA 2092837

A charge mosaic membrane is made of a cationic polymer and an anionic polymer. At least one of the cationic and anionic polymers is in the form of spheres havinq a diameter of 0.01-10 µm. The charge mosaic membrane has been improved inter alia in the ability to selectively separate an electrolyte or non electrolyte and also in mechanical strength, so that it is useful for the separation of an electrolyte or non-electrolyte or for desalination. A process for the production of the charge mosaic membrane is also described. The pro- duction process can provide the charge mosaic membrane at low cost.

Membrane de charge à mosaïque fabriquée d'un polymère cationique et d'un polymère anionique. Au moins un des polymères cationique ou anionique se présente sous la forme de sphères d'un diamètre de 0,01 à 10 mu. La membrane de charge à mosaïque a été améliorée, entre autres, au niveau de sa capacité de séparer un électrolyte d'un non-électrolyte et de sa résistance mécanique, ce qui accroît son utilité dans la séparation des électrolytes et des non-électrolytes à des fins de dessalage. Un procédé pour la fabrication de la membrane de charge à mosaïque est également proposé. Le procédé de fabrication proposé permet de réduire les coûts associés à la production des membranes de charge à mosaïque.

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