Process for preparing sulfonated poly(aryl ether) resins

Details Process for preparing sulfonated poly(aryl ether) resins Process for preparing sulfonated poly(aryl ether) resins

C - Chemistry, Metallurgy

08

G

402/17

C08G 75/23 (2006.01) C08G 65/48 (2006.01)

Patent

CA 1267486

PROCESS FOR PREPARING SULFONATED POLY(ARYL ETHER) RESINS ABSTRACT OF THE DISCLOSURE Poly(aryl ether) resins having repeat units of the structure -O-E-O-E'- wherein E is the residuum of a dihydric phenol and E' is the residuum of e benzenoid compound having an inert electron withdrawing group in at least one of the positions ortho and pars to the valence bonds, can be sulfonated by first reacting with a silyl halosulfonate, or the combination of a silyl halide and a halosulfonic acid, to form a resin having pendant silyl sulfonate groups, followed by the base cleavage of the silyl moiety to form the sulfonated resin. The sulfonated resins may be used to make membranes.

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