Back to results
US 2026/0258248 A1Published application
Solution of polyarylsulfone polymers in n-(2'-hydroxyethyl)-2-pyrrolidone for membrane preparation and use
AssigneeBASF SE
InventorsOliver GRONWALD, Simon POULTON, Torben ADERMANN
Life of this patent
Estimating the term…
Abstract
The present invention relates to a solution comprising a polyarylsulfone polymer selected from the group of polyethersulfone and polysulfone and N-(2′-hydroxyethyl)-2-pyrrolidone, the process of making a membrane thereof and the use of this membrane for separation processes.
Claims16
-15. (canceled)
A solution comprising:
- (a) a polyarylsulfone polymer selected from the group of polyethersulfone comprising repeating units of formula I
- and polysulfone comprising repeating units of formula II
- or mixtures thereof, wherein the weight average molecular weight Mw of the polyarylsulfone polymer is in the range from 40000 to 105000 g/mol and the polyarylsulfone polymer comprises at least 95 wt.-% of the repeating units of formula I and II based on the total weight of the polyarylsulfone polymer,
- and
- (b) N-(2′-hydroxyethyl)-2-pyrrolidone.
2 more elements
Dependencies are inferred from the claim text.