Aromatic polyether sulfone block copolymers
AssigneeBASF SE
InventorsAlexander Khvorost, Martin Weber, Christian Schmidt, Jörg Belack, Cecile Gibon, Bernd-Steffen Von Bernstorff
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Abstract
An aromatic polyether sulfone block copolymer comprises hydrophilic segments which have sulfonic acid groups and hydrophobic segments which have no sulfonic acid groups, wherein the proportion by weight of hydrophilic segments is from 0.02 to 0.35.
Claims9
1-12. (canceled)
An aromatic polyether sulfone block copolymer comprising hydrophilic segments which have sulfonic acid groups and hydrophobic segments which have no sulfonic acid groups, wherein the proportion by weight of hydrophilic segments is from 0.05 to 0.30, wherein the hydrophobic segments comprise polyether sulfone building blocks and the hydrophilic segments comprise sulfonated polyphenylene sulfone building blocks.
Dependencies are inferred from the claim text.