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US 2025/0092197 A1Published application
Polyarylether copolymers based on diols sugar alcohols
AssigneeBASF SE
InventorsMartin WEBER, Steffen MADER, Christian MALETZKO, Veit STEGMANN
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Abstract
The present invention relates to a process for the preparation of a polyarylether copolymer (P), the polyarylether copolymer (P) obtained by the process and a process for the preparation of a membrane comprising the polyarylether copolymer (P) and the membrane itself.
Claims16
-15. (canceled)
A process for the preparation of a polyarylether copolymer comprising the step of converting a reaction mixture comprising as components:
- (A1) at least one aromatic dihalogen component
- (B1) at least one sugar alcohol selected from the group consisting of isosorbide, isomannide and isoidide,
- (B2) at least one aromatic dihydroxy component,
- (B3) at least one dihydroxy polyalkylene oxide,
- wherein the reaction mixture comprises 10 to 70 mol % of component (B1) and 29.5 to 65 mol % of component (B2) and from 0.5 to 5 mol % of component (B3), based on the total amount of components (B1), (B2) and (B3) contained in the reaction mixture.
2 more elements
Dependencies are inferred from the claim text.