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公开(公告)号：EP1167421A2
公开(公告)日：2002-01-02
申请号：EP01202377.6
申请日：2001-06-19
发明人： Takeda, Yuji , Hasebe, Akio , Masamuto, Isamu , Mitsui, Akira
摘要： A process for producing a polyphenylene ether, which comprises: contacting, with an aqueous solution of a chelating agent, a polyphenylene ether solution obtained by polymerization in a non-water-soluble polymerization solvent for a polyphenylene ether in the presence of a catalyst, to terminate the polymerization and deactivating the catalyst; and adding a water-soluble poor solvent for the polyphenylene ether to precipitate the polyphenylene ether; and recovering the thus precipitated polyphenylene ether, wherein (a) the contact with the chelating agent aqueous solution is carried out by holding the polyphenylene ether solution and the chelating agent aqueous solution at a temperature of from 50 to 120°C for 10 to 180 minutes, wherein (b) a mixture remaining after the recovery of the polyphenylene ether, which contains the non-water-soluble polymerization solvent and water-soluble poor solvent, is brought into contact with water to extract the water-soluble poor solvent, and a water phase containing the thus extracted water-soluble poor solvent is recovered by separation, and wherein (c) the water-soluble poor solvent is separated and removed from the water phase by distillation, and the whole or a part of the remaining water phase is recycled as water to be brought into contact with the mixture, the remaining water phase having a content of a high-boiling-point organic substance of 1 wt.% or less.
摘要翻译： 1。一种聚苯醚的制造方法，其特征在于，在催化剂的存在下，使螯合剂的水溶液与在聚苯醚的非水溶性聚合溶剂中聚合而得到的聚苯醚溶液接触， 终止聚合并使催化剂失活; 并加入用于聚苯醚的水溶性不良溶剂以沉淀聚苯醚; 并回收如此沉淀的聚苯醚，其中（a）通过将聚苯醚溶液和螯合剂水溶液在50-120℃的温度下保持10-180分钟来进行与螯合剂水溶液的接触 其中，（b）使含有非水溶性聚合溶剂和水溶性不良溶剂的聚苯醚回收后的混合物与水接触，萃取水溶性不良溶剂， 通过分离回收含有如此提取的水溶性不良溶剂的水相，并且其中（c）通过蒸馏将水溶性不良溶剂从水相中分离并除去，并且剩余水相的全部或一部分为 作为水再循环以与混合物接触，剩余的水相具有1重量％或更低的高沸点有机物质含量。
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公开(公告)号：EP1167421A3
公开(公告)日：2002-04-10
申请号：EP01202377.6
申请日：2001-06-19
发明人： Takeda, Yuji , Hasebe, Akio , Masamuto, Isamu , Mitsui, Akira
摘要： A process for producing a polyphenylene ether, which comprises: contacting, with an aqueous solution of a chelating agent, a polyphenylene ether solution obtained by polymerization in a non-water-soluble polymerization solvent for a polyphenylene ether in the presence of a catalyst, to terminate the polymerization and deactivating the catalyst; and adding a water-soluble poor solvent for the polyphenylene ether to precipitate the polyphenylene ether; and recovering the thus precipitated polyphenylene ether, wherein (a) the contact with the chelating agent aqueous solution is carried out by holding the polyphenylene ether solution and the chelating agent aqueous solution at a temperature of from 50 to 120°C for 10 to 180 minutes, wherein (b) a mixture remaining after the recovery of the polyphenylene ether, which contains the non-water-soluble polymerization solvent and water-soluble poor solvent, is brought into contact with water to extract the water-soluble poor solvent, and a water phase containing the thus extracted water-soluble poor solvent is recovered by separation, and wherein (c) the water-soluble poor solvent is separated and removed from the water phase by distillation, and the whole or a part of the remaining water phase is recycled as water to be brought into contact with the mixture, the remaining water phase having a content of a high-boiling-point organic substance of 1 wt.% or less.
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公开(公告)号：EP1167421B1
公开(公告)日：2008-12-31
申请号：EP01202377.6
申请日：2001-06-19
发明人： Takeda, Yuji , Hasebe, Akio , Masamuto, Isamu , Mitsui, Akira
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