Filtration membrane and process for making such membrane

B - Operations – Transporting – 01 – D

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B01D 69/10 (2006.01) B01D 67/00 (2006.01) B01D 71/72 (2006.01) C08G 79/02 (2006.01)

Patent

CA 2074577

ABREGE : Membrane de filtration et procédé de fabrication. Membrane pour dispositif de filtration ou de séparation de gaz ou de liquide, constituée par une structure poreuse en au moins un matériau choisi parmi la céramique frittée, les métaux frittés, le carbone microporeux, le verre microporeux, les polymères, ladite structure comportant au moins une couche microporeuse, caractérisée par le fait que l'ensemble de la surface extérieure et de la surface intérieure des pores (14, 11) de ladite structure est recouvert d'un film mince (2) et continu d'un polyphosphazène, l'épaisseur dudit film étant comprise entre 0,01% et 10% du diamètre moyen des pores de ladite couche microporeuse. FIGURE A PUBLIER : Fig.1

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