Ultrafiltration membranes fabricated from sulfonated polyphenylenesulfones
AssigneesNational University of Singapore, BASF SE
InventorsMartin Weber, Christian Maletzko, Natalia Widjojo, Peishan Zhong, Tai-Shung Chung
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Abstract
The present invention is directed to ultrafiltration membranes comprising a membrane substrate layer (S) based on a sulfonated polyaryleneethersulfone polymer and to a method for their preparation. Furthermore, the present invention is directed to ultrafiltration processes making use of said membrane.
Claims17
1-15. (canceled)
An ultrafiltration membrane comprising at least one membrane substrate layer (S) comprising at least one partially sulfonated polyethersulfone polymer (P1), wherein said polymer (P1) comprises non-sulfonated and sulfonated repeating units and wherein said sulfonated repeating unit is contained in a molar proportion of 0.1 to 20 mole-%, based on the total mole number of said two repeating units.
Dependencies are inferred from the claim text.