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    • 25. 发明授权
    • Process for separating isomers of toluenediamine
    • 分离甲苯二胺异构体的方法
    • US4633018A
    • 1986-12-30
    • US811623
    • 1985-12-20
    • Hermann A. Zinnen
    • Hermann A. Zinnen
    • C07C209/86C07C20060101C07C7/12C07C67/00C07C209/00C07C211/27C07C211/47C07C211/51C07C85/26
    • C07C209/86
    • This invention comprises a process for separating 2,4-toluenediamine from a feed mixture comprising 2,4-toluenediamine and at least one isomer thereof, which process comprises contacting the mixture at adsorption conditions with an adsorbent comprising a Y type zeolite cation-exchanged with a Ni or Ca cation or an X type zeolite cation-exchanged with a cation from the group Na, Ni and K, thereby selectively adsorbing the 2,4-toluenediamine or an L type zeolite cation-exchanged with a K cation, or an X type zeolite cation exchanged with a Ba cation, thereby selectively adsorbing the 2,6-toluenediamine. The remainder of the feed mixture is removed from the adsorbent and the adsorbed toluenediamine isomer is recovered by desorption at desorption conditions with a desorbent material comprising a lower alcohol or an amine.
    • 本发明包括从包含2,4-甲苯二胺及其至少一种异构体的进料混合物中分离2,4-甲苯二胺的方法,该方法包括使吸附条件下的混合物与包含Y型沸石阳离子交换的Y型沸石 与Na,Ni和K族的阳离子进行阳离子交换的Ni或Ca阳离子或X型沸石,从而选择性吸附2,4-甲苯二胺或与K阳离子交换的L型沸石,或X 型沸石阳离子与Ba阳离子交换,从而选择性吸附2,6-甲苯二胺。 从吸附剂中除去剩余的进料混合物,通过在解吸条件下用包含低级醇或胺的解吸剂材料解吸来回收吸附的甲苯二胺异构体。
    • 27. 发明授权
    • Process for separating isomers of toluidine
    • 分离甲苯胺异构体的方法
    • US4480129A
    • 1984-10-30
    • US537123
    • 1983-09-29
    • James W. PriegnitzHermann A. Zinnen
    • James W. PriegnitzHermann A. Zinnen
    • C07C211/47C07C67/00C07C209/00C07C209/86C07C85/26
    • C07C209/86
    • This invention comprises a process for separating p-toluidine from a feed mixture comprising p-toluidine and o- or m-toluidine, which process comprises contacting the mixture at adsorption conditions with an adsorbent comprising an X or Y-type zeolite cation exchanged with a cation in the group Fe, Mn, Co, Ni or Zn, thereby selectively adsorbing the p-toluidine. The remainder of the feed mixture is removed from the adsorbent and the p-toluidine is recovered by desorption at desorption conditions with a desorbent material comprising aniline or an alkyl amine excluding alkyl amines having eight or more carbon atoms per molecule when the adsorbent comprises an X-type zeolite.
    • 本发明包括从包含对甲苯胺和邻 - 或间甲苯胺的进料混合物中分离对甲苯胺的方法,该方法包括在吸附条件下将混合物与包含与下式交换的X或Y型沸石阳离子的吸附剂接触: Fe,Mn,Co,Ni或Zn组中的阳离子,从而选择性吸附对甲苯胺。 进料混合物的其余部分从吸附剂中除去,并且在脱附条件下用解吸附物质回收对甲苯胺,当包含苯胺或烷基胺的解吸剂材料除去每分子具有八个或更多个碳原子的烷基胺时,当吸附剂包含X 型沸石。