PRODUCTION METHOD OF POLYETHER NITRILE

An object is to provide a method for producing a polyether nitrile having high heat resistance and excellent in mechanical properties such that the polyether nitrile has a high molecular weight and high flowability. As a solution, provided is a method for producing a polyether nitrile, in which in p...

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Bibliographische Detailangaben
Hauptverfasser:	SHIMODA, Tomoaki, HASHIKAWA, Akihiro, NAKANO, Yasuhiro
Format:	Patent
Sprache:	eng ; fre ; ger
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:	An object is to provide a method for producing a polyether nitrile having high heat resistance and excellent in mechanical properties such that the polyether nitrile has a high molecular weight and high flowability. As a solution, provided is a method for producing a polyether nitrile, in which in producing a polyether nitrile by allowing an aromatic dihydroxy compound (I) and a dihalobenzonitrile compound (II) to undergo a polycondensation reaction, the reaction is continued to a region where a polymer reduced viscosity of a parachlorophenol solution at 40°C decreases after exceeding 1 as the polycondensation proceeds and reaching a maximum.