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.

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.

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.

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.

公开(公告)号：ES2263821T3

公开(公告)日：2006-12-16

申请号：ES02777064

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: Procedimiento para la obtención de trietilendiamina, que presenta un grado de pureza > el 90 %, caracterizado porque se libera la trietilendiamina en bruto de los productos de elevado punto de ebullición y, a continuación, se evapora la trietilendiamina a partir de la mezcla, obtenida de este modo, y se hace pasar a través de un disolvente líquido.

公开(公告)号：DE50206754D1

公开(公告)日：2006-06-14

申请号：DE50206754

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.

公开(公告)号：DE10122502A1

公开(公告)日：2002-11-14

申请号：DE10122502

申请日：2001-05-10

Applicant: BASF AG

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

IPC: C07D487/04 ,  C07D487/08 ,  C07C209/86 ,  C07C211/10

Abstract: Purification of triethylene diamine (TEDA) comprises crystallization and extraction of the resulting mother liquor with an extraction agent that is at most only slightly miscible with the solvent of the mother liquor but in which TEDA is soluble. Following extraction, the treated mother liquor with reduced TEDA content and/or the extraction agent enriched in TEDA is recycled to the process. A process for the purification of triethylene diamine (TEDA) by evaporation and feeding the TEDA vapor to a liquid solvent followed by crystallization is characterized in that following crystallization of the TEDA the resulting mother liquor is extracted with an extraction agent that is at most only slightly miscible with the solvent of the mother liquor but in which TEDA is soluble. Following extraction, the treated mother liquor with reduced TEDA content and/or the extraction agent enriched in TEDA is recycled to the process.

公开(公告)号：DE10100943A1

公开(公告)日：2002-07-11

申请号：DE10100943

申请日：2001-01-10

Applicant: BASF AG

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

IPC: C07D487/08

Abstract: A process for the production of a solution of pure triethylenediamine (TEDA) comprises evaporation of TEDA from a mixture comprising a solvent or a diluent, whereby the solvent or diluent has a boiling point of 175-250 deg C at normal pressure, and the TEDA vapor is fed into a liquid solvent.