公开(公告)号：DE50305512D1

公开(公告)日：2006-12-07

申请号：DE50305512

申请日：2003-08-08

Applicant: BASF AG

Inventor： FUNKE FRANK ,  HILL THOMAS ,  VON WATZDORF RUEDIGER ,  MATTMANN WOLFGANG ,  HARDER WOLFGANG ,  HENKES ERHARD ,  LITTMANN GERD ,  JULIUS MANFRED

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.

公开(公告)号：BRPI0414626A

公开(公告)日：2006-11-07

申请号：BRPI0414626

申请日：2004-09-24

Applicant: BASF AG

Inventor： REUTEMANN WERNER ,  WEBER THEODOR ,  ROSS KARL-HEINZ ,  JULIUS MANFRED

IPC: C07C209/86 ,  C07C211/04 ,  C07C209/90 ,  C07C209/16

Abstract: The invention relates to a method of avoiding corrosion in the separation of methylamine from a product stream ( 10 ) which is obtained in the preparation of methylamines by gas-phase reaction of methanol and ammonia and includes monomethylamine, dimethylamine, trimethylamine, ammonia and methanol as components, where ammonia is separated off by pure distillation in a first column ( 1 ), the remaining components of the product stream obtained as bottoms ( 12 ) are fed to a second column ( 2 ). Trimethylamine ( 14 ) is separated off in the second column ( 2 ) by extractive distillation with introduction of water. The further components of the product stream obtained as bottoms ( 15 ) from the second column ( 2 ) are fed to a third column ( 3 ), in which monomethylamine and dimethylamine are separated off at the top. The monomethylamine and dimethylamine are separated by distillation in a fourth column ( 4 ). To avoid corrosion alkali metal hydroxide is added to the second or third column ( 3 ).

公开(公告)号：MY121628A

公开(公告)日：2006-02-28

申请号：MYPI9702411

申请日：1997-05-31

Applicant: BASF AG

Inventor： KRAUSE ALFRED ,  RUST HARALD ,  SIEGEL HARDO ,  JULIUS MANFRED ,  WITZEL TOM ,  SIEGEL WOLFGANG

IPC: C07D211/58 ,  C07B63/04 ,  C07D211/72 ,  C07D221/20 ,  C08K5/3435

Abstract: THE INVENTION RELATES TO A PROCESS FOR REDUCING THE DIMERIZATION OF PIPERIDINES OF THE FORMULA I FORMULA WHERE RL TO R4 ARE CL- TO C6-ALKYL, RL AND R2 AND/OR R3 AND R4 TOGETHER ARE A CH2 CHAIN HAVING 2 TO 5 CARBON ATOMS, WHICH COMPRISES ADDING TO THE PIPERIDINE FROM 0.001 TO 0.2 % BY WEIGHT OF A REDUCING AGENT OF THE FORMULA MXH4-MYM, WHERE M IS AN ALKALI METAL, NR4, WHERE R ARE IDENTICAL OR DIFFERENT CL-C4-ALKYL GROUPS, OR AN EQUIVALENT OF AN ALKALINE EARTH METAL OR AN EQUIVALENT OF ZINC, X IS BORON OR ALUMINUM, Y IS H OR CN AND M IS 0 OR 1. THE INVENTION ALSO RELATES TO A MIXTURE OF PIPERIDINES OF THE FORMULA I, FROM 0.001 TO 0.2 % BY WEIGHT OF A REDUCING AGENT AND FROM 1 TO 1000 PPM OF DIMERS OF THE PIPERIDINES OF THE FORMULA I, AND TO THE PREPARATION OF HINDERED AMINE LIGHT STABILIZERS THEREFROM.

公开(公告)号：SK284691B6

公开(公告)日：2005-09-08

申请号：SK31098

申请日：1998-03-06

Applicant: BASF AG

Inventor： VOIT GUIDO ,  WITZEL TOM ,  JULIUS MANFRED

IPC: C07D211/12 ,  B01J21/04 ,  B01J21/06 ,  B01J21/08 ,  B01J31/02 ,  C07B61/00 ,  C07D211/58

Abstract: Described is a process for preparing of 4-amino-2,2,6,6- tetramethylpiperidine (TAD) wherein, in the first step, 2,2,6,6-tetramethyl-4-piperidinone (TAA) is reacted with ammonia in the presence of solid acid catalysts a), which are virtually insoluble in the reaction mixture, to give the TAA imine and, in the second step, the TAA imine is hydrogenated in the presence of a hydrogenation catalyst b).

公开(公告)号：DE10344282A1

公开(公告)日：2005-04-21

申请号：DE10344282

申请日：2003-09-24

Applicant: BASF AG

Inventor： REUTEMANN WERNER ,  WEBER THEODOR ,  ROS KARL-HEINZ ,  JULIUS MANFRED

IPC: C07C209/86 ,  C07C211/04

Abstract: The invention relates to a method of avoiding corrosion in the separation of methylamine from a product stream ( 10 ) which is obtained in the preparation of methylamines by gas-phase reaction of methanol and ammonia and includes monomethylamine, dimethylamine, trimethylamine, ammonia and methanol as components, where ammonia is separated off by pure distillation in a first column ( 1 ), the remaining components of the product stream obtained as bottoms ( 12 ) are fed to a second column ( 2 ). Trimethylamine ( 14 ) is separated off in the second column ( 2 ) by extractive distillation with introduction of water. The further components of the product stream obtained as bottoms ( 15 ) from the second column ( 2 ) are fed to a third column ( 3 ), in which monomethylamine and dimethylamine are separated off at the top. The monomethylamine and dimethylamine are separated by distillation in a fourth column ( 4 ). To avoid corrosion alkali metal hydroxide is added to the second or third column ( 3 ).

公开(公告)号：CA2257095C

公开(公告)日：2005-02-01

申请号：CA2257095

申请日：1997-05-30

Applicant: BASF AG

Inventor： RUST HARALD ,  KRAUSE ALFRED ,  JULIUS MANFRED ,  SIEGEL HARDO ,  WITZEL TOM ,  SIEGEL WOLFGANG

IPC: C07D211/58 ,  C07D211/56 ,  C07D221/20

Abstract: A process for purifying raw piperidines of formula (I), where R1 to R4 are C 1 to C6 alkyl, R1 and R2 and/or R3 and R4 together are a CH2 chain with 2 to 5 C atoms. Said process is characterized in that in an initial step high-boiling-point substances and possible water are eliminated by distillation from the raw piperidines, in a second step 0.01 to 5 wt %, in relation to the product of the first step, of a reducing agent are add ed and in a third step the piperidines are isolated by distillation.

公开(公告)号：MY117816A

公开(公告)日：2004-08-30

申请号：MYPI9901026

申请日：1999-03-19

Applicant: BASF AG

Inventor： BREINER ULRIKE DR ,  JULIUS MANFRED ,  NEUBERG RAINER DR ,  XDF ROBERT WEI DR ,  WILMS AXEL DR ,  HU HARRY Y

IPC: C08G69/00 ,  C08G69/04 ,  C08G69/16 ,  C08G69/28 ,  C08G69/48 ,  C08K5/3435

Abstract: A PROCESS FOR PREPARING POLYAMIDES COMPRISES POLYMERIZING STARTING MONOMERS OR STARTING OLIGOMERS IN THE PRESENCE OF AT LEAST ONE COMPOUND OF THE FORMULA (1) (FORMULA I) WHERE R IS A FUNCTIONAL GROUP R8 WHICH BEARS 1-4 IDENTICAL OR DIFFERENT AMIDE-FORMING GROUPS R7, RL IS H, CL-C20-ALKYL, CYCLOALKYL, BENZYL OR OR6, WHERE R6 IS H, CL-C20-ALKYL, CYCLOALKYL OR BENZYL R2, R3, R4 AND R5 ARE INDEPENDENTLY C1-CL0-ALKYL,N IS A NATURAL NUMBER GREATER THAN 1, ANDTHE PIPERIDINE DERIVATIVES ATTACHED TO R ARE IDENTICAL OR DIFFERENT WITH REGARD TO THE SUBSTITUENTS, MEANING RL, R2, R3, R4 AND R5.THE POLYAMIDES ARE USEFUL FOR PREPARING FILAMENTS, FIBERS, FILMS, SHEETLIKE STRUCTURES AND MOLDINGS.

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.

公开(公告)号：AU2002352013A1

公开(公告)日：2003-07-09

申请号：AU2002352013

申请日：2002-11-15

Applicant: BASF AG

Inventor： HENKES ERHARD ,  SCHMIDTKE HELMUT ,  FISCHER ROLF-HARTMUTH ,  JULIUS MANFRED ,  LEBKUCHER ROLF ,  ROSS KARL-HEINZ ,  RUDLOFF MARTIN ,  STOPS PETER

IPC: C07D207/26 ,  C07D207/267

Abstract: Process for the continuous preparation of N-methyl-2-pyrrolidone (NMP) by reacting gamma-butyrolactone (GBL) with monomethylamine (MMA) in the liquid phase, wherein GBL and MMA are used in a molar ratio of from 1:1.08 to 1:2 and the reaction is carried out at from 320 to 380° C. and an absolute pressure of from 70 to 120 bar.

公开(公告)号：EA002976B1

公开(公告)日：2002-12-26

申请号：EA200000950

申请日：1999-03-18

Applicant: BASF AG

Inventor： BREINER ULRIKE ,  JULIUS MANFRED ,  NEUBERG RAINER ,  WEISS ROBERT ,  WILMS AXEL ,  HU HARRY Y

IPC: C08G69/00 ,  C08G69/04 ,  C08G69/16 ,  C08G69/28 ,  C08G69/48 ,  C08K5/3435

Abstract: Данноеизобретениеотноситсяк способуполученияполиамидов, отличающемусятем, чтополимеризациюилиполиконденсациюисходныхмономеровилиисходныхолигомеровпроводятв присутствии, покрайнеймере, одногосоединенияформулы (I)где R, R, R, R, R, Rи n имеютприведённыев формулеизобретениязначения, ик получаемымэтимспособомполиамидам, атакжек применениютакихполиамидовдляизготовлениянитей, волокон, пленок, изделийплоскойформыи фасонныхэлементов.