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    PRODUCTION OF PURE TRIETHYLENEDIAMINE SOLUTION
    2.
    发明专利
    PRODUCTION OF PURE TRIETHYLENEDIAMINE SOLUTION 失效

    公开(公告)号：JP2001064281A

    公开(公告)日：2001-03-13

    申请号：JP2000221322

    申请日：2000-07-21

    Applicant: BASF AG

    Inventor： RIECHERS HARTMUT ,  HOEHN ARTHUR ,  SIMON JOACHIM ,  LANG ORTMUND ,  SCHOENMAKERS HARTMUT ,  RAULS MATTHIAS DR ,  CLAERBOUT KOEN

    IPC: C07D471/08 ,  C07D487/08

    Abstract: PROBLEM TO BE SOLVED: To provide an effective and economical method for producing pure triethylenediamine(TEDA) and its solution. SOLUTION: This method for producing pure triethylenediamine solution comprises evaporating triethylenediamine and introducing the gas state triethylenediamine into a liquid solvent. The gaseous triethylendiamine is obtained from the top of a column or its side discharging port. Further, the pure triethylenediamine solution is produced by following the above method and then crystallizing the triethylenediamine from the solution. The liquid solvent is selected from the group consisting of cyclic or non-cyclic hydrocarbons, chlorinated aliphatic hydrocarbons, aromatic hydrocarbons, alcohols, ketones, aliphatic carboxylic acid esters, aliphatic nitriles and ethers.

    Method for continuously distilling and removing piperazine from mixture of ethylenediamine and piperazine
    3.
    发明专利
    Method for continuously distilling and removing piperazine from mixture of ethylenediamine and piperazine 有权
    从乙烯胺和哌嗪的混合物中连续蒸馏和去除哌嗪的方法

    公开(公告)号：JP2007051142A

    公开(公告)日：2007-03-01

    申请号：JP2006216786

    申请日：2006-08-09

    Applicant: Basf Ag ,  ビーエーエスエフ アクチェンゲゼルシャフトBASF Aktiengesellschaft

    Inventor： JOEDECKE MICHAEL ,  LANG ORTMUND ,  CAUWENBERGE GUNTHER VAN ,  FRAUENKRON MATTHIAS

    IPC: C07D295/02 ,  C07C209/86 ,  C07C211/10

    CPC classification number: C07D295/00

    Abstract: PROBLEM TO BE SOLVED: To improve qualities of piperazine, especially its color and color stability in a method for continuously distilling and removing piperazine from a mixture of ethylenediamine and piperazine by distilling the mixture under high-pressure at elevated temperature, discharging ethylenediamine from the top of a distillation column and piperazine from the bottom of the distillation column. SOLUTION: The method for continuously distilling and removing piperazine from a mixture of ethylenediamine and piperazine comprises a process of direct circulation treatment in which piperazine discharged from the bottom of the distillation column is transported through an evaporation apparatus operated at about 160-about 170°C and returned to the distillation apparatus and a process in which piperazine is retained in a system for the circulation treatment for 30-about 60 minutes and then discharged in a state of vapor from a side discharge port at the bottom of the distillation column. COPYRIGHT: (C)2007,JPO&INPIT

    Abstract translation: 要解决的问题：为了提高哌嗪的质量，特别是在高温下通过在高温下蒸馏混合物从乙二胺和哌嗪的混合物中连续蒸馏除去哌嗪的方法中的颜色和颜色稳定性，将乙二胺 从蒸馏塔的顶部和来自蒸馏塔底部的哌嗪。 解决方案：从乙二胺和哌嗪的混合物中连续蒸馏除去哌嗪的方法包括直接循环处理的方法，其中从蒸馏塔底部排出的哌嗪通过在约160-约 170℃，返回到蒸馏装置中，并且在循环处理体系中保留哌嗪30〜约60分钟，然后以蒸气状态从蒸馏塔底部的侧排出口排出的方法 。 版权所有（C）2007，JPO＆INPIT

    METHOD FOR PURIFYING TRIETHYLENEDIAMINE
    4.
    发明专利
    METHOD FOR PURIFYING TRIETHYLENEDIAMINE 审中-公开

    公开(公告)号：JP2002363181A

    公开(公告)日：2002-12-18

    申请号：JP2002136221

    申请日：2002-05-10

    Applicant: BASF AG

    Inventor： LANG ORTMUND ,  RUMPF BERND ,  FRAUENKRON MATTHIAS ,  FUNHOFF DIRK ,  MANDERBACH THOMAS ,  STEIN BERND

    IPC: C07D487/04 ,  C07D487/08

    Abstract: PROBLEM TO BE SOLVED: To provide a method for purifying triethylenediamine(TEDA) by evaporating TEDA, transferring the gas state TEDA into a liquid solvent and then continuously crystallizing from the solvent, enabling the re-circulation of at least a part of the used solvent into the purification method and also increasing the yield of the TEDA. SOLUTION: This method for purifying the TEDA is provided by extraction- treating a mother liquor obtained after the crystallization of the TEDA by using an extraction agent which is incompatible or slightly compatible with the solvent of the mother liquor and in which the TEDA is easily dissolvable, and returning the mother liquor poor in the TEDA obtained after the extraction and/or the extraction agent rich in the TEDA and used for the extraction to the purification method.

    METHOD FOR PRODUCING PURE TRIETHYLENEDIAMINE SOLUTION
    5.
    发明专利
    METHOD FOR PRODUCING PURE TRIETHYLENEDIAMINE SOLUTION 审中-公开

    公开(公告)号：JP2002241380A

    公开(公告)日：2002-08-28

    申请号：JP2002000691

    申请日：2002-01-07

    Applicant: BASF AG

    Inventor： LANG ORTMUND ,  RUMPF BERND ,  FRAUENKRON MATTHIAS ,  FUNHOFF DIRK ,  MANDERBACH THOMAS ,  STEIN BERND

    IPC: C07D487/08

    Abstract: PROBLEM TO BE SOLVED: To provide an efficient and economical method for production by which pure tetraethylenediamine(TEDA) and its solution are improved in order to obtain the TEDA and TEDA solution of improved quality in relation to color, color stability, odor and purity. SOLUTION: This method for producing the solution of the triethylenediamine(TEDA) comprises evaporating the TEDA from a mixture containing a solvent or a diluent wherein the solvent or diluent has 170-250 deg.C boiling point under atmospheric pressure (=1.01325 bars) and passing the TEDA in the form of vapor through a liquid solvent.

    6.
    发明专利
    未知

    公开(公告)号：AT325797T

    公开(公告)日：2006-06-15

    申请号：AT02777064

    申请日：2002-09-11

    Applicant: BASF AG

    Inventor： LANG ORTMUND ,  RUMPF BERND ,  FRAUENKRON MATTHIAS ,  MANDERBACH THOMAS ,  STEIN BERND

    IPC: C07D487/08 ,  C07D241/00

    Abstract: Highly pure triethylenediamine is obtained by a process in which triethylenediamine is freed from high boilers and then the triethylenediamine is vaporized from the mixture thus obtained and is passed into a liquid solvent. The process makes it possible in particular to obtain highly pure solutions of triethylenediamine. Crystallization is generally unnecessary.

    8.
    发明专利
    未知

    公开(公告)号：DE102005031316A1

    公开(公告)日：2007-01-18

    申请号：DE102005031316

    申请日：2005-07-05

    Applicant: BASF AG

    Inventor： RUMPF BERND ,  LANG ORTMUND ,  HAUNERT ANDREA ,  GENGER THOMAS ,  MEIER ANTON

    IPC: C07C7/04 ,  B01D1/02 ,  C07C13/277

    Abstract: Process for recovering cyclododecatriene (CDT) from a solution containing CDT and high boilers such as deactivated catalyst and polymers, which includes feeding the solution into a preheater and heating it, subsequently depressurizing it through a downstream pressure maintenance device and feeding the resulting two-phase mixture into a helical tube evaporator and there reducing the CDT content of the liquid phase by partial evaporation and discharging a gaseous product stream having an increased concentration of CDT.

    10.
    发明专利
    未知

    公开(公告)号：DE10145117A1

    公开(公告)日：2003-04-03

    申请号：DE10145117

    申请日：2001-09-13

    Applicant: BASF AG

    Inventor： LANG ORTMUND ,  RUMPF BERND ,  FRAUENKRON MATTHIAS ,  MANDERBACH THOMAS ,  STEIN BERND

    IPC: C07D487/08 ,  C07C209/84 ,  C07C211/10 ,  C08G18/18

    Abstract: Highly pure triethylenediamine is obtained by a process in which triethylenediamine is freed from high boilers and then the triethylenediamine is vaporized from the mixture thus obtained and is passed into a liquid solvent. The process makes it possible in particular to obtain highly pure solutions of triethylenediamine. Crystallization is generally unnecessary.

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