公开(公告)号：MY139807A

公开(公告)日：2009-10-30

申请号：MYPI20050531

申请日：2005-02-14

Applicant: BASF AG

Inventor： RUMPF BERND DR ,  STROEFER ECKHARD DR ,  LANG ORTMUND ,  LANG NEVEN DR

IPC: C07C45/82 ,  C07C45/78

Abstract: A PROCESS FOR PREPARING A HIGH-CONCENTRATION FORMALDEHYDE SOLUTION BY REMOVING WATER FROM A LOWER-CONCENTRATION FORMALDEHYDE SOLUTION HAVING A FORMALDEHYDE CONTENT OF FROM 5 TO 50% BY WEIGHT, IN WHICH THE LOWER-CONCENTRATION FORMALDEHYDE SOLUTION IS FED TO A PREHEATER AND HEATED IN THE PREHEATER, DEPESSURIZED VIA A PRESSURE MAINTENANCE DEVICE AND CONCENTRATED IN A HELICAL TUBE EVAPORATOR TO GIVE A VAPOR STREAM AND THE HIGH-CONCENTRATION FORMALDEHYDE SOLUTION AS BOTTOM STREAM, WHEREIN THE HEATED LOWER-CONCENTRATION FORMALDEHYDE SOLUTION IS DEPRESSURIZED IN THE PRESSURE MAINTENANCE DEVICE TO GIVE A TWO-PHASE MIXTURE WHICH IS FED INTO THE HELICAL TUBE EVAPORATOR, IS PROPOSED.

公开(公告)号：DE102005061956A1

公开(公告)日：2007-07-05

申请号：DE102005061956

申请日：2005-12-23

Applicant: BASF AG

Inventor： LANG ORTMUND ,  CIPRIAN JUERGEN ,  RAULS MATTHIAS ,  FRAUENKRON MATTHIAS ,  CAUWENBERGE GUNTHER VAN ,  NOUWEN JAN

IPC: C07C209/86 ,  C07C209/84 ,  C07C211/10

Abstract: Method for processing triethylene diamine comprises evaporating the triethylene diamine, introducing the gaseous triethylene diamine into a solvent, subsequently crystallizing and separating the mixture, extracting the obtained mother liquor with an extracting agent and obtaining a raffinate phase by an adsorption process.

公开(公告)号：ES2272786T3

公开(公告)日：2007-05-01

申请号：ES02782456

申请日：2002-07-04

Applicant: BASF AG

Inventor： FRAUENKRON MATTHIAS ,  STEIN BERND ,  LANG ORTMUND

IPC: C07D487/08 ,  B01J29/40 ,  C07B61/00

Abstract: Procedimiento para la obtención de trietilendiamina mediante reacción de piperazina sobre un catalizador de zeolita, que contiene, además de SiO2, un óxido de al menos otro metal M divalente, trivalente o tetravalente, caracterizado porque la zeolita presenta una proporción molar Si/M de > 100.

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：AT298340T

公开(公告)日：2005-07-15

申请号：AT02010129

申请日：2002-05-10

Applicant: BASF AG

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

IPC: C07D487/04 ,  C07D487/08

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：DE50104094D1

公开(公告)日：2004-11-18

申请号：DE50104094

申请日：2001-12-14

Applicant: BASF AG

Inventor： LANG ORTMUND ,  RUMPF DR ,  FRAUENKRON DR ,  FUNHOFF DR ,  MANDERBACH DR ,  STEIN DR

IPC: C07D487/08

Abstract: The invention relates to the preparation of pure triethylenediamine (TEDA) by evaporating TEDA from the mixture comprising a solvent or diluent, where the solvent or diluent has a boiling point at atmospheric pressure in the range from 175 to 250° C., passing the vapor-form TEDA into a liquid solvent, and subsequently crystallizing the TEDA out of the resultant solution.

公开(公告)号：DE50208348D1

公开(公告)日：2006-11-16

申请号：DE50208348

申请日：2002-07-04

Applicant: BASF AG

Inventor： FRAUENKRON MATTHIAS ,  STEIN BERND ,  LANG ORTMUND

IPC: C07D487/08 ,  B01J29/40 ,  C07B61/00

Abstract: The present invention describes a process for the preparation of triethylenediamine by reacting piperazine over a zeolite catalyst which, in addition to SiO 2 , contains an oxide of at least one further divalent, trivalent or tetravalent metal M, wherein the zeolite has a molar Si/M ratio of >100. In particular, a zeolite of the ZSM-5 type is used. The use of the zeolites permits suppression of the undesired formation of the byproduct 2-ethylpiperazine and hence considerable simplification of the working-up, in combination with high piperazine conversions and a small excess of water.

公开(公告)号：AT341551T

公开(公告)日：2006-10-15

申请号：AT02782456

申请日：2002-07-04

Applicant: BASF AG

Inventor： FRAUENKRON MATTHIAS ,  STEIN BERND ,  LANG ORTMUND

IPC: B01J29/40 ,  C07B61/00 ,  C07D487/08

Abstract: The present invention describes a process for the preparation of triethylenediamine by reacting piperazine over a zeolite catalyst which, in addition to SiO 2 , contains an oxide of at least one further divalent, trivalent or tetravalent metal M, wherein the zeolite has a molar Si/M ratio of >100. In particular, a zeolite of the ZSM-5 type is used. The use of the zeolites permits suppression of the undesired formation of the byproduct 2-ethylpiperazine and hence considerable simplification of the working-up, in combination with high piperazine conversions and a small excess of water.

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：DE102004006649A1

公开(公告)日：2005-09-01

申请号：DE102004006649

申请日：2004-02-11

Applicant: BASF AG

Inventor： RUMPF BERND ,  STROEFER ECKHARD ,  LANG ORTMUND ,  LANG NEVEN

IPC: C07C45/82 ,  C07C47/04 ,  B01D1/22

Abstract: A process for preparing a high-concentration formaldehyde solution by removing water from a lower-concentration formaldehyde solution having a formaldehyde content of from 5 to 50% by weight, in which the lower-concentration formaldehyde solution is fed to a preheater and heated in the preheater, depressurized via a pressure maintenance device and concentrated in a helical tube evaporator to give a vapor stream and the high-concentration formaldehyde solution as bottom stream, wherein the heated lower-concentration formaldehyde hyde solution is depressurized in the pressure maintenance device to give a two-phase mixture which is fed into the helical tube evaporator, is proposed.