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公开(公告)号：AU2003258591A1
公开(公告)日：2004-04-30
申请号：AU2003258591
申请日：2003-08-08
Applicant: BASF AG
Inventor： HENKES ERHARD , LITTMANN GERD , JULIUS MANFRED , FUNKE FRANK , HILL THOMAS , WATZDORF JOBST RUDIGER VON , MATTMANN WOLFGANG , HARDER WOLFGANG
IPC: C07C209/86 , B01D3/14 , C07C209/84 , C07C211/36 , C07C209/00
Abstract: Recovery of isophoronediamine (IPDA) comprises preparation of IPDA having a cis/trans isomer ratio of less than 73/27 and separation into at least 5 fractions by distillation including an IPDA fraction having a cis/trans ratio of greater than 73/27 and a fraction having a cis/trans ratio of less than 66/34. A process for the recovery of 3-aminomethyl-3,5,5-trimethylcyclohexylamine (isophoronediamine, IPDA) comprises; (a) preparation of IPDA having a cis/trans isomer ratio of less than 73/27; (b) introduction of IPDA to the middle region of a distillation column having inserts and distillation of IPDA at 5-300 degreesC and 10-2000 mbar; (c) optionally further purification of the IPDA from (b) by distillation in at least one further column whereby the IPDA from step (b) and (c) are separated into at least 5 fractions comprising an organic fraction (1a) containing impurities having a lower b. pt. than trans-IPDA, an aqueous fraction (1b) containing impurities having a lower b. pt. than trans-IPDA, a fraction (2) containing impurities having a higher b. pt. than cis-IPDA, an IPDA fraction (3) having a cis/trans ratio of greater than 73/27 and an IPDA fraction (4) having a cis/trans ratio of less than 66/34.
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Patent Agency Ranking
公开(公告)号：AU2003263200A1
公开(公告)日：2004-03-19
申请号：AU2003263200
申请日：2003-08-06
Applicant: BASF AG
Inventor： WATZDORF JOBST RUDIGER VON , MATTMANN WOLFGANG , HARDER WOLFGANG , HENKES ERHARD , LITTMANN GERD , JULIUS MANFRED , FUNKE FRANK , HILL THOMAS
IPC: C07C209/54 , C07B61/00 , C07C29/68 , C07C209/82 , C07C209/84 , C07C209/86 , C07C211/36
Abstract: Pure isophorone-diamine (IPDA) with a cis/trans isomer ratio (CTR) of at least 73/27 is obtained by (a) making crude IPDA with a CTR below 73/27, (b) purifying and separating into fractions with CTR of at least 73/27 (b1) and below 63/37 (b2), (c) isomerizing (b2) in presence of hydrogen, ammonia and catalyst to give IPDA with a CTR of 63/37-66/34 which is recycled to stage (a). A method (M1) for the production of substantially pure 3-aminomethyl-3,5,5-trimethyl cyclohexylamine (isophorone-diamine; IPDA) with a cis/trans isomer ratio (CTR) of at least 73/27 involves: (a) preparation of crude IPDA with a CTR of less than 73/27, (b) purification and separation to give fractions (b1) with a CTR of at least 73/27 and (b2) with a CTR of less than 63/27 and (c) isomerization of (b2) in presence of hydrogen, ammonia and a hydrogenation catalyst to give IPDA with a CTR of 63/37-66/34 which is then recycled to stage (a). An Independent claim is also included for a method (M2) for the production of IPDA with a CTR in the range 63/37 to 66/34 by reacting IPDA with any CTR value with hydrogen and ammonia in presence of a hydrogenation catalyst.
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公开(公告)号：AU2003274682B2
公开(公告)日：2008-10-02
申请号：AU2003274682
申请日：2003-06-06
Applicant: BASF AG
Inventor： KRONER HUBERTUS , NIEKEN ULRICH , BENTHACK CHRISTINA , HAUFF THOMAS , WATZDORF JOBST RUDIGER VON , KESSLER JOCHEN , SCHLEMMER PETER
Abstract: In a process to convert emulsified polymers to polymers in an exothermic reaction, educts form a product in the presence of a passing gas. The initial reactor temperature and pressure especially are monitored and logged. The energy balance is then used to calculate the quantity of educt and product. The maximum pressure variation is calculated by monitoring the step-by-step reaction of the remaining educt quantities. The passing-gas pressure is calculated from the maximum pressure variation and the initial gas pressure. The maximum pressure variation is calculated by sub-dividing the quantities of educt and product present into quantities (n, followed by the calculation the change in reactor temperature against the quantities of residual educt and product following a known change in residual educt in an exothermal reaction. Further claimed is a process to monitor and regulate the operation of a blow-down boiler in which the product of the exothermal reaction is held in intermediate storage. The blow-down boiler is monitored online and regulated on the basis of a separate pressure calculation.
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公开(公告)号：BR0311430A
公开(公告)日：2005-03-22
申请号：BR0311430
申请日：2003-06-06
Applicant: BASF AG
Inventor： NIEKEN ULRICH , WATZDORF JOBST RUDIGER VON , KESSLER JOCHEN , BENTHACK CHRISTINA , KRONER HUBERTUS , HAUFF THOMAS , SCHLEMMER PETER
Abstract: In a process to convert emulsified polymers to polymers in an exothermic reaction, educts form a product in the presence of a passing gas. The initial reactor temperature and pressure especially are monitored and logged. The energy balance is then used to calculate the quantity of educt and product. The maximum pressure variation is calculated by monitoring the step-by-step reaction of the remaining educt quantities. The passing-gas pressure is calculated from the maximum pressure variation and the initial gas pressure. The maximum pressure variation is calculated by sub-dividing the quantities of educt and product present into quantities (n, followed by the calculation the change in reactor temperature against the quantities of residual educt and product following a known change in residual educt in an exothermal reaction. Further claimed is a process to monitor and regulate the operation of a blow-down boiler in which the product of the exothermal reaction is held in intermediate storage. The blow-down boiler is monitored online and regulated on the basis of a separate pressure calculation.
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公开(公告)号：AU2003258591A8
公开(公告)日：2004-04-30
申请号：AU2003258591
申请日：2003-08-08
Applicant: BASF AG
Inventor： HARDER WOLFGANG , WATZDORF JOBST RUDIGER VON , LITTMANN GERD , MATTMANN WOLFGANG , HILL THOMAS , HENKES ERHARD , JULIUS MANFRED , FUNKE FRANK
IPC: C07C209/86 , B01D3/14 , C07C209/84 , C07C211/36
Abstract: Recovery of isophoronediamine (IPDA) comprises preparation of IPDA having a cis/trans isomer ratio of less than 73/27 and separation into at least 5 fractions by distillation including an IPDA fraction having a cis/trans ratio of greater than 73/27 and a fraction having a cis/trans ratio of less than 66/34. A process for the recovery of 3-aminomethyl-3,5,5-trimethylcyclohexylamine (isophoronediamine, IPDA) comprises; (a) preparation of IPDA having a cis/trans isomer ratio of less than 73/27; (b) introduction of IPDA to the middle region of a distillation column having inserts and distillation of IPDA at 5-300 degreesC and 10-2000 mbar; (c) optionally further purification of the IPDA from (b) by distillation in at least one further column whereby the IPDA from step (b) and (c) are separated into at least 5 fractions comprising an organic fraction (1a) containing impurities having a lower b. pt. than trans-IPDA, an aqueous fraction (1b) containing impurities having a lower b. pt. than trans-IPDA, a fraction (2) containing impurities having a higher b. pt. than cis-IPDA, an IPDA fraction (3) having a cis/trans ratio of greater than 73/27 and an IPDA fraction (4) having a cis/trans ratio of less than 66/34.
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公开(公告)号：AU2003274682A1
公开(公告)日：2003-12-22
申请号：AU2003274682
申请日：2003-06-06
Applicant: BASF AG
Inventor： KESSLER JOCHEN , BENTHACK CHRISTINA , KRONER HUBERTUS , HAUFF THOMAS , SCHLEMMER PETER , NIEKEN ULRICH , WATZDORF JOBST RUDIGER VON
Abstract: In a process to convert emulsified polymers to polymers in an exothermic reaction, educts form a product in the presence of a passing gas. The initial reactor temperature and pressure especially are monitored and logged. The energy balance is then used to calculate the quantity of educt and product. The maximum pressure variation is calculated by monitoring the step-by-step reaction of the remaining educt quantities. The passing-gas pressure is calculated from the maximum pressure variation and the initial gas pressure. The maximum pressure variation is calculated by sub-dividing the quantities of educt and product present into quantities (n, followed by the calculation the change in reactor temperature against the quantities of residual educt and product following a known change in residual educt in an exothermal reaction. Further claimed is a process to monitor and regulate the operation of a blow-down boiler in which the product of the exothermal reaction is held in intermediate storage. The blow-down boiler is monitored online and regulated on the basis of a separate pressure calculation.
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