Method for Preparing Polyethersulfone

A method for preparing a polyethersulfone includes oxidation of a poly arylene ether sulfone-sulfide compound including a repeat unit represented by Formula 1 with an aqueous solution of an organic acid and an aqueous solution of hydrogen peroxide. In the method, the overall process is carried out u...

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Bibliographische Detailangaben
Hauptverfasser:	SEO DONG WAN, KIM HYUN SEOK, BAE IM HYUCK, JIN YOUNG SUB
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	A method for preparing a polyethersulfone includes oxidation of a poly arylene ether sulfone-sulfide compound including a repeat unit represented by Formula 1 with an aqueous solution of an organic acid and an aqueous solution of hydrogen peroxide. In the method, the overall process is carried out under mild conditions of about 190° C. or less, thereby enabling economic preparation of a polyethersulfone without complicated post-treatment, such as separation of by-products formed from a basic compound, and the like. wherein R1, R2, R3 and R4 are each independently a C1 to C10 hydrocarbon group, and a, b, c and d are each independently an integer from 0 to 4.