Abstract:
The present invention is directed to positively charged nanofiltration (NF) membranes comprising a substrate layer (S) based on a sulfonated polymer and a positively charged film layer (F) on top of said substrate, and to a method for their preparation. Furthermore, the present invention is directed to nanofiltration processes making use of said composite membrane.
Abstract:
The present invention is directed to ultrafiltration membranes comprising a membrane substrate layer (S)based on a sulfonated polyaryleneethersulfonepolymer and to a method for their preparation. Furthermore, the present invention is directed to ultrafiltration processes making use of said membrane.
Abstract:
Membrane comprising a carrier and a rejection layer, wherein said membrane is a multiple channel membrane. The rejection layer is a polyamide layer. Process for making multiple channel membranes coated with a polyamide layer.