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    • 6. 发明公开
    • Process for the removal of lower molecular weight fractions of poly(arylene sulfide) polymers
    • Verfahren zur Entfernung von Fraktionen niedrigen Molekulargewichtes aus Polyarylensulfidpolymeren。
    • EP0594191A1
    • 1994-04-27
    • EP93117150.8
    • 1993-10-22
    • PHILLIPS PETROLEUM COMPANY
    • Soules, David AndrewHagenson, Randy L.Geibel, Jon FrederickAsh, Carlton Edwin
    • C08G75/02
    • C08G75/0281
    • A method is provided for selectively extracting the lower molecular weight fraction of a poly(arylene sulfide) polymer by contacting the polymer with a polar organic compound and a promoter compound to form a less dense polymer-lean liquid phase and a more dense polymer-rich liquid phase, separating the polymer-lean liquid phase from the polymer-rich liquid phase, and recovering the polymer from the polymer-rich phase. Alternatively, either of the phases can be isolated and polar organic compound and optionally promoter can be added to form two new phases, followed by isolation of the new polymer-rich phase. This process can be repeated as often as desired or practicable in order to recover polymer having a desired molecular weight and/or molecular weight distribution.
    • 提供了一种通过使聚合物与极性有机化合物和助催化剂化合物接触以选择性地提取聚(亚芳基硫醚)聚合物的较低分子量部分以形成较不致密的贫聚合物的较低浓度的富含聚合物的液相 液相,从富含聚合物的液相中分离富聚合物的液相,并从富聚合物相中回收聚合物。 或者,可以分离任一相,并且可以加入极性有机化合物和任选的促进剂以形成两个新相,随后分离新的富聚合物相。 为了回收具有所需分子量和/或分子量分布的聚合物,可以按需要或可行地重复该过程。