Multilayer membrane and process of manufacturing the same

Details Multilayer membrane and process of manufacturing the same Multilayer membrane and process of manufacturing the same

B - Operations, Transporting

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183/1, 117/88.5

B01D 69/12 (2006.01) B01D 67/00 (2006.01) B01D 71/06 (2006.01) B01D 71/38 (2006.01)

Patent

CA 2035360

- 15 - ABSTRACT Multilayer Membrane and Process of Manufacturing the Same A multilayer membrane is described, which is composed of a carrier layer, a porous supporting layer and a separating layer. The carrier layer consists of fibers of polyamide, polyvinylidene difluoride, polyester or glass, the porous supporting layer consists of a polysulfone, polyvinylidene difluoride, polyethersulfone, polyimide, polyvinyl alcohol, polyurethane, polyacrylo- nitrile or polyether imide, the separating layer consists of polyvinyl alcohol. The separating layer is nonporous and has a structure having a high microcrystalline content. A process of manufacturing that membrane is also described.

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