Aromatic sulfide-sulfone polymer production

Details Aromatic sulfide-sulfone polymer production Aromatic sulfide-sulfone polymer production

C - Chemistry, Metallurgy

08

G

402/320

C08G 75/20 (2006.01) C08G 75/02 (2006.01)

Patent

CA 1147493

28141 Abstract of the Disclosure .Aromatic sulfide/sulfone polymers are prepared by intially contacting a dihaloaromatic sulfone, an alkali metal sulfide, an organic amide, and, optionally, an alkali metal carboxylate under polymerization conditions and subsequently a-t or near completion of the polymerization reaction, adding an end-capping agent comprising additional dihaloaromatic sulfone to the reaction mixture producing a polymer exhibiting improved physical properties including melt flow stability. The resulting polymers have utility as coatings, films, molded objects, filaments, fibers, and the like.

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