公开(公告)号：AT359992T

公开(公告)日：2007-05-15

申请号：AT01130515

申请日：2001-12-21

Applicant: BASF AG

Inventor： PFEFFINGER JOACHIM ,  HUELLMANN MICHAEL DR ,  HOEHN ARTHUR DR ,  FUNKE FRANK DR ,  OHLBACH FRANK DR ,  GERLACH TILL DR

IPC: C07B61/00 ,  C07C209/48 ,  C07C211/05 ,  C07C211/11 ,  C07C211/14

Abstract: Secondary amines of the formula (II)whereX is a C1-20-alkyl, C2-20-alkenyl or C3-8-cycloalkyl group which may be unsubstituted or substituted by C1-20-alkyl, C3-8-cycloalkyl, C4-20-alkylcycloalkyl, C4-20-cycoalkylalkyl, C2-20-alkoxyalkyl, C6-14-aryl, C7-20-alkylaryl, C7-20-aralkyl, C1-20-alkoxy, hydroxy, C1-20-hydroxyalkyl, amino, C1-20-alkylamino, C2-20-dialkylamino, C2-12-alkenylamino, C3-8-cycloalkylamino, arylamino, diarylamino, aryl-C1-8-alkylamino, halogen, mercapto, C2-20-alkenyloxy, C3-8-cycloalkoxy, aryloxy and/or C2-8-alkoxycarbonyl,are prepared by reacting nitriles of the formula (III)with hydrogen at from 20 to 250° C. and pressures of from 60 to 350 bar in the presence of an Rh-containing catalyst comprising from 0.1 to 5% by weight, based on the total weight of the catalyst, of Rh on a support to give mixtures of primary amines of the formula (I)and secondary amines of the formula (II)and returning at least part of the primary amines separated from the mixtures obtained to the reaction.

公开(公告)号：AU2003254583A1

公开(公告)日：2004-04-08

申请号：AU2003254583

申请日：2003-07-24

Applicant: BASF AG

Inventor： WOLFERT ANDREAS ,  MULLER CHRISTIAN ,  STROEFER ECKHARD ,  WEBER MARKUS ,  PFEFFINGER JOACHIM ,  KNOSCHE CARSTEN

IPC: C07B43/10 ,  C07C263/10 ,  C07C265/12 ,  C07C265/14 ,  C08G73/00

Abstract: A method for the production of aromatic di-isocyanates (I) by gas-phase reaction of phosgene with diamines involves carrying out the reaction in a reaction zone under a pressure of more than 3 bar and less than 20 bar. An Independent claim is also included for a production unit for this process, in which the ratio of production capacity to phosgene hold-up is more than 3200 tonnes di-isocyanate per annum/kg phosgene.

公开(公告)号：DE10209305A1

公开(公告)日：2002-10-31

申请号：DE10209305

申请日：2002-03-02

Applicant: BASF AG

Inventor： LAQUA GERHARD ,  KLOETZER MATTHIAS ,  KRASE VOLKER ,  PFAB PETER ,  PFEFFINGER JOACHIM ,  SCHMIDT ANDREAS

IPC: C07C263/00 ,  C07C265/04 ,  C07C269/00 ,  C07C271/12 ,  C07C263/12 ,  C07C29/00 ,  C07C263/18 ,  C07C269/08

Abstract: Thermal decomposition of allophanates in a reaction vessel comprises stripping gaseous decomposition products from the vessel with an inert carrier gas or vapor and condensing them.

公开(公告)号：DE59604163D1

公开(公告)日：2000-02-17

申请号：DE59604163

申请日：1996-10-02

Applicant: BASF AG

Inventor： WATZENBERGER DR ,  PFEFFINGER JOACHIM

IPC: C01B7/01 ,  C01B7/04 ,  C01B7/07

Abstract: High purity Cl2 is separated from an inlet gas (1) by absorption (C1) and subsequent desorption in a distillation column (C2). The upper part of the distillation column is coupled with the top of a chlorine separation column (C3) and the lower part of the distillation column (C2) is coupled to the sump of the chlorine separation column (C3). The mixture (3) of absorption material and Cl2 is passed into the distillation column and high purity Cl2 (6) is drawn off from the central region of the chlorine separation column. Also claimed is the process for separating high purity Cl2 from a gas stream by subjecting it to pressure swing adsorption then compressing the gas to 5-10 bar and finally releasing the Cl2 by low temp. distillation as the sump product of the distillation column. The head product is returned to the inlet stream.

公开(公告)号：DE19828510A1

公开(公告)日：1999-12-30

申请号：DE19828510

申请日：1998-06-26

Applicant: BASF AG

Inventor： STROEFER ECKHARD ,  PFEFFINGER JOACHIM

IPC: B01J19/18 ,  C07C263/10 ,  C07C265/08 ,  C07C265/14 ,  C07C263/20

Abstract: In the simultaneous production of isocyanates (I) by reacting the corresponding amines (II) with phosgene (COCl2), reaction is carried out in a mixer and subsequent dwell reactor, then the reaction mixture is freed from excess COCl2 and hydrogen chloride (HCl) and separated into individual (I) fractions.

公开(公告)号：CA2329655A1

公开(公告)日：1999-10-28

申请号：CA2329655

申请日：1999-04-12

Applicant: BASF AG

Inventor： PFEFFINGER JOACHIM ,  NAUMANN FRITZ ,  SCHARR VOLKER ,  POPLOW FRANK ,  PENZEL ULRICH ,  DOSCH JURGEN ,  SCHWARZ HANS VOLKMAR ,  JACOBS JAN ,  VAN DEN ABEEL PETER ,  STAROSTA DIETER ,  NEVEJANS FILIP ,  VAN PEE WILLY ,  BOESEL HILMAR ,  STROFER ECKHARD

IPC: C07C263/10 ,  C07C263/20 ,  C07C265/14

Abstract: The invention relates to a method for producing mixtures consisting of diphenylmethane diisocyanates and polyphenylene-polymethylene-polyisocyanates containing a reduced amount of chlorinated secondary products and with a reduced iodine colour index. According to said method, a two-stage reaction of the corresponding mixtures of diphenylmethane-diamines and polyphenylenepolymethylene polyamines with phosgene is carried out in the presence of at least one inert organic solvent at a high temperature. When the phosgenation is complete, the excess phosgene and solvent are separated off and the product of the reaction is treated with heat. The method is characterised in that the mass ratios of phosgene to hydrogen chloride in the detention apparatus in the second stage of phosgenation are simultaneously 10-30:1 in the liquid phase and 1-10:1 in the gas phase.

公开(公告)号：CA2322544A1

公开(公告)日：1999-09-10

申请号：CA2322544

申请日：1999-03-01

Applicant: BASF AG

Inventor： FRIEDRICH HOLGER ,  LEUTNER BERND ,  PFEFFINGER JOACHIM

IPC: C01B25/30 ,  B01J39/04 ,  C01D15/04 ,  C01D15/08 ,  C01D15/10

Abstract: The invention relates to a method for producing a highly pure lithium salt using lithium carbonate. Said method comprises the following steps: A: treating a mixture comprising lithium carbonate and water with CO2 to produce an aqueous mixture containing lithium hydrogencarbonate; B: passing the aqueous mixture containing lithium hydrogencarbonate through an ion-exchange module; C: precipitating out the lithium carbonate from the aqueous mixture containing lithium hydrogencarbonate obtained in step B after treatment with the ion-exchange module and D: reprocessing the precipitated lithium carbonate or converting the precipitated lithium carbonate into another highly pure lithium salt.

公开(公告)号：DE59600460D1

公开(公告)日：1998-10-01

申请号：DE59600460

申请日：1996-01-04

Applicant: BASF AG

Inventor： DINGERDISSEN UWE DR ,  HENNE ANDREAS DR ,  HERRMANN JUERGEN ,  PFEFFINGER JOACHIM ,  STOPS PETER

IPC: C07C209/60

公开(公告)号：MY123056A

公开(公告)日：2006-05-31

申请号：MYPI9603961

申请日：1996-09-25

Applicant: BASF AG

Inventor： WATZENBERGER OTTO DR ,  PFEFFINGER JOACHIM

IPC: C01B7/01 ,  C01B7/07 ,  C01B7/04

Abstract: A PROCESS FOR SEPARATING CHLORINE OF HIGH PURITY FROM A CHLORINE-CONTAINING FEED GAS (1) BY ABSORPTION OF THE CHLORINE USING AN INERT ABSORBENT AND DOWNSTREAM DESORPTION OF THE CHLORINE FROM THE ABSORBENT/CHLORINE MIXTURE DRAWN OFF FROM THE ABSORPTION STAGE BY THE SUPPLY OF SAID MIXTURE TO A DESORPTION DISTILLATION COLUMN (C2) COMPRISES CARRYING OUT THE DESORPTION DISTILLATION IN A DESORPTION DISTILLATION COLUMN (C2) WHICH IS COUPLED TO A CHLORINE SEPARATION COLUMN (C3) IN SUCH A WAY THAT THE TOP OF THE CHLORINE SEPARATION COLUMN (C3) AND AN UPPER SECTION OF THE DESORPTION DISTILLATION COLUMN (C2) AND A LOWER SECTION OF THE DESORPTION DISTILLATION COLUMN (C2) AND THE BOTTOM OF THE CHLORINE SEPARATION COLUMN (C3) ARE CONNECTED TO ONE ANOTHER ON BOTH THE GAS AND THE LIQUID SIDE, THE ABSORBENT/CHLORINE MIXTURE BEING SUPPLIED EXCLUSIVELY TO THE DESORPTION DISTILLATION COLUMN (C2), AND HIGH-PURITY CHLORINE BEING DRAWN OFF FROM A MIDDLE REGION OF THE CHLORINE SEPARATION COLUMN (C3).

公开(公告)号：HU0200035D0

公开(公告)日：2002-03-28

申请号：HU0200035

申请日：2002-01-04

Applicant: BASF AG

Inventor： DR FUNKE FRANK ,  DR GERLACH TILL ,  DR HUELLMANN MICHAEL ,  DR HOEHN ARTHUR ,  DR OHLBACH FRANK ,  PFEFFINGER JOACHIM

IPC: C07B61/00 ,  C07C209/48 ,  C07C211/05 ,  C07C211/11 ,  C07C211/14 ,  C07C209/00

Abstract: Secondary amines of the formula (II)whereX is a C1-20-alkyl, C2-20-alkenyl or C3-8-cycloalkyl group which may be unsubstituted or substituted by C1-20-alkyl, C3-8-cycloalkyl, C4-20-alkylcycloalkyl, C4-20-cycoalkylalkyl, C2-20-alkoxyalkyl, C6-14-aryl, C7-20-alkylaryl, C7-20-aralkyl, C1-20-alkoxy, hydroxy, C1-20-hydroxyalkyl, amino, C1-20-alkylamino, C2-20-dialkylamino, C2-12-alkenylamino, C3-8-cycloalkylamino, arylamino, diarylamino, aryl-C1-8-alkylamino, halogen, mercapto, C2-20-alkenyloxy, C3-8-cycloalkoxy, aryloxy and/or C2-8-alkoxycarbonyl,are prepared by reacting nitriles of the formula (III)with hydrogen at from 20 to 250° C. and pressures of from 60 to 350 bar in the presence of an Rh-containing catalyst comprising from 0.1 to 5% by weight, based on the total weight of the catalyst, of Rh on a support to give mixtures of primary amines of the formula (I)and secondary amines of the formula (II)and returning at least part of the primary amines separated from the mixtures obtained to the reaction.