A membrane is provided that is formed from a composition. The composition comprises a polyarylene ether polymer or copolymer comprising a zwitterion; or comprises a polyarylene polymer or copolymer comprising a zwitterion.
Provided is a composition including a polyarylene ether polymer or copolymer comprising a zwitterionic, group. The zwitterionic group can derive from a zwitterionic precursor such as 4-(2-hydroxyethyl)-1-piperazine ethane sulfonic acid and comprises at least one atom of sulfur, phosphorus, or nitrogen. Embodiments also relate to an article, made from the composition, such as a membrane.
A process is provided that includes attaching a zwitterion to a polymer or a copolymer, wherein the polymer or copolymer comprises a polyarylene ether or a polyarylene.
tert.-Alkylester-Bisphenole, Verfahren zu ihrer Herstellung und ihre Verwendung
申请人:BAYER AG
公开号:EP0457102A2
公开(公告)日:1991-11-21
Gegenstand der Erfindung sind neue, seitenständig tert.-Alkylestergruppen aufweisende Bisphenole (I) und ihre Verwendung zur Herstellung von aromatischen Polyestern, Polycarbonaten und (Co)Polyestercarbonaten,
vorzugsweise ist
R₁-CH₂-CH₂-,
R₂CH₃,
R₄ und R₅H oder Methyl.