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    Process for recovering a polyarylene sulfide
    1.
    发明授权
    Process for recovering a polyarylene sulfide 失效
    回收聚芳硫醚的方法

    公开(公告)号：US4789729A

    公开(公告)日：1988-12-06

    申请号：US125667

    申请日：1987-11-25

    申请人： Nobuo Nagira ,  Toshikazu Kato ,  Hiroshi Inoue

    发明人： Nobuo Nagira ,  Toshikazu Kato ,  Hiroshi Inoue

    IPC分类号： C08G75/02 ,  C08G75/06 ,  C08G75/16

    CPC分类号： C08G75/0281

    摘要： A polyarylene sulfide having a low content of electrolytic ions is economically recovered from a mixture consisting mainly of polyarylene sulfide and an alkali metal halide which mixture is obtained by reacting a polyhalogenated aromatic compound and an alkali metal sulfide containing water in an organic polar solvent, by dehydrating the mixture by distillation, mixing the dehydrated mixture with a solvent which is a poor solvent for both polyarylene sulfide and alkali metal halide and which is soluble in the organic polar solvent to prepare a slurry consisting essentially of the polyarylene sulfide and the alkali metal halide, subjecting the slurry to solid-liquid separation, washing the resultant cake with the poor solvent, drying the cake, adding water to the cake to wash away the alkali metal halide through dissolution, and subjecting the slurry to solid-liquid separation to recover polyarylene sulfide. Such a polyarylene sulfide is particularly useful for use in electronic and electric components and molded articles such as films, sheets and fibers.

    摘要翻译： 具有低电解离子含量的聚芳硫醚通过主要由聚芳硫醚和碱金属卤化物组成的混合物经济地回收，该混合物通过使多卤化芳族化合物和含有有机极性溶剂的碱金属硫化物反应而得到， 通过蒸馏使混合物脱水，将脱水混合物与作为聚芳硫醚和碱金属卤化物的不良溶剂的溶剂混合并且可溶于有机极性溶剂中以制备基本上由聚芳硫醚和碱金属卤化物组成的浆料 将浆料进行固液分离，用不良溶剂洗涤滤饼，干燥滤饼，向滤饼中加入水，通过溶解洗涤碱金属卤化物，并对浆料进行固液分离，回收聚亚芳基 硫化物。 这种聚芳硫醚特别可用于电子和电气部件以及模制品如薄膜，片材和纤维。