C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
402/20, 402/314
C08G 75/23 (2006.01) B01D 71/68 (2006.01) B01J 39/16 (2006.01) C08J 5/22 (2006.01)
Patent
CA 1237231
TITLE Polysulfone Ionomers INVENTORS Michael D. Guiver Oleh Kutowy John W. ApSimon Abstract of the Disclosure Aromatic ionomeric copolymers having arylether and arylsulfone linkages have been prepared by condensation of both: (a) The alkali metal bisphenate salts of 9, 9-bis ( 4-hydroxyphenyl)-fluoren-4-carboxylic acid, optionally with another bisphenol in a proportion of 0-99 mol percent based on the combined bisphenates in the mixture; and (b) dihalodiphenylsulfones where the halogen is selected from chlorine or fluorine. The copolymers are useful as ion exchange materials and permselective membranes among other things. A process of preparing and purifying the carboxylic acid containing bisphenol monomer is described.
496614
Apsimon John W.
Guiver Michael D.
Kutowy Oleh
Canadian Patents And Development Limited - Societe Canadienne De
National Research Council Of Canada
Thomson Alan A.
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