High purity diphenyl sulfone, preparation and use thereof...

Details High purity diphenyl sulfone, preparation and use thereof... High purity diphenyl sulfone, preparation and use thereof...

C - Chemistry, Metallurgy

08

G

C08G 65/00 (2006.01)

Patent

CA 2740252

The presence of certain impurities in diphenyl sulfone have a deleterious effect on the properties of the poly(aryletherketone)s produced therein, including one or more of color, melt stability, molecular weight, crystallinity, etc. and here identify those impurities and provide processes for the removal of such impurities.

La présence de certaines impuretés de la diphénylsulfone a un effet délétère sur les propriétés des poly(aryléthercétones) produites à partir de ce composé, y compris sur une ou plusieurs propriétés choisies parmi la couleur, la stabilité du mélange fondu, la masse moléculaire, la cristallinité, etc. La présente invention identifie ces impuretés et fournit des procédés d'élimination de telles impuretés.

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