公开(公告)号：MY135604A

公开(公告)日：2008-05-30

申请号：MYPI20032973

申请日：2003-08-06

Applicant: BASF AG

Inventor： HAUBNER MARTIN DR ,  PINKOS ROLF DR ,  WECK ALEXANDER

IPC: C07C43/11 ,  C08G65/28 ,  C08G65/20

Abstract: THE PRESENT INVENTION PROVIDES A PROCESS FOR ONE-STAGE PREPARATION OF POLYOXYALKYLENE GLYCOLS BY COPOLYMERIZING TETRAHYDROFURAN AND ALPHA, OMEGA-DIOLS IN THE PRESENCE OF A HETEROPOLYACID AND OF A HYDROCARBON, WHICH COMPRISES DISTILLING WATER IN A MIXTURE WITH THIS HYDROCARBON OUT OF THE COPOLYMERIZATION.

公开(公告)号：DE50113441D1

公开(公告)日：2008-02-14

申请号：DE50113441

申请日：2001-05-03

Applicant: BASF AG

Inventor： KAIBEL GERD ,  WECK ALEXANDER ,  RAHN RALF-THOMAS

IPC: C07D307/08 ,  B01D3/14 ,  B01D3/26 ,  C07C27/28 ,  C07C29/80 ,  C07C31/20 ,  C07D307/33

Abstract: In a process for the continuous fractional distillation of mixtures comprising tetrahydrofuran, gamma-butyrolactone and/or 1,4-butanediol to give at least three fractions, the fractionation is carried out in an assembly of distillation columns comprising at least one dividing wall column or at least one assembly of thermally coupled conventional distillation columns.

公开(公告)号：AT376989T

公开(公告)日：2007-11-15

申请号：AT04764836

申请日：2004-09-04

Applicant: BASF AG

Inventor： HUGO RANDOLF ,  JOURDAN SABINE ,  WENZ KIRSTEN ,  PREISS THOMAS ,  WECK ALEXANDER

IPC: C07C209/48 ,  C07C211/27

Abstract: A process for preparing xylylenediamine, comprising the steps of ammoxidizing xylene to phthalonitrile and hydrogenating the phthalonitrile, which comprises contacting the vaporous product of the ammoxidation stage directly with a liquid organic solvent or with molten phthalonitrile (quench), partly or fully removing components having a boiling point lower than phthalonitrile (low boilers) from the resulting quench solution or suspension or phthalonitrile melt and, after the low boiler removal and before the hydrogenation, removing products having a boiling point higher than phthalonitrile (high boilers).

公开(公告)号：DE50307243D1

公开(公告)日：2007-06-21

申请号：DE50307243

申请日：2003-04-25

Applicant: BASF AG

Inventor： PINKOS ROLF ,  FISCHER ROLF-HARTMUTH ,  ROESCH MARKUS ,  BOTTKE NILS ,  SCHLITTER STEPHAN ,  HESSE MICHAEL ,  WECK ALEXANDER ,  WINDECKER GUNTHER ,  HEYDRICH GUNNAR

IPC: C07D307/20 ,  C07D307/33 ,  B01J21/08 ,  B01J23/72 ,  C07B61/00

Abstract: The present invention relates to a process for preparing unsubstituted or C 1 -C 4 -alkyl-substituted gamma-butyrolactone by catalytic hydrogenation of maleic acid and/or its derivatives in the presence of chromium-free catalyst comprising from 10 to 80% by weight of copper oxide and from 10 to 90% by weight of at least one catalyst support selected from the group consisting of silicon dioxide, titanium dioxide, hafnium dioxide, magnesium silicate, activated carbon, silicon carbide, zirconium dioxide and alpha-aluminum oxide.

公开(公告)号：AT361919T

公开(公告)日：2007-06-15

申请号：AT03717319

申请日：2003-04-25

Applicant: BASF AG

Inventor： PINKOS ROLF ,  FISCHER ROLF-HARTMUTH ,  ROESCH MARKUS ,  BOTTKE NILS ,  SCHLITTER STEPHAN ,  HESSE MICHAEL ,  WECK ALEXANDER ,  WINDECKER GUNTHER ,  HEYDRICH GUNNAR

IPC: C07D307/20 ,  C07D307/33 ,  B01J21/08 ,  B01J23/72 ,  C07B61/00

Abstract: The present invention relates to a process for preparing unsubstituted or C 1 -C 4 -alkyl-substituted gamma-butyrolactone by catalytic hydrogenation of maleic acid and/or its derivatives in the presence of chromium-free catalyst comprising from 10 to 80% by weight of copper oxide and from 10 to 90% by weight of at least one catalyst support selected from the group consisting of silicon dioxide, titanium dioxide, hafnium dioxide, magnesium silicate, activated carbon, silicon carbide, zirconium dioxide and alpha-aluminum oxide.

公开(公告)号：DE502004003420D1

公开(公告)日：2007-05-16

申请号：DE502004003420

申请日：2004-08-27

Applicant: BASF AG

Inventor： HUGO RANDOLF ,  JOURDAN SABINE ,  WENZ KIRSTEN ,  PREISS THOMAS ,  WECK ALEXANDER

IPC: C07C209/48 ,  C07C211/27

公开(公告)号：MY128541A

公开(公告)日：2007-02-28

申请号：MYPI20030655

申请日：2003-02-25

Applicant: BASF AG

Inventor： WINDECKER GUNTHER ,  WECK ALEXANDER ,  FISCHER ROLF-HARTMUTH DR ,  ROESCH MARKUS DR ,  BOTTKE NILS DR ,  HESSE MICHAEL DR ,  SCHLITTER STEPHAN DR ,  BORCHERT HOLGER DR

IPC: B01D3/14 ,  C07D307/08

Abstract: THE PRESENT INVENTION PROVIDES A PROCESS FOR DISTILLATIVELY PURIFYING CRUDE WATER-CONTAINING TETRAHYDROFURAN BY PASSING THE CRUDE TETRAHYDROFURAN THROUGH THREE DISTILLATION COLUMNS, WITHDRAWING WATER FROM THE BOTTOM OF THE FIRST COLUMN, RECYCLING WATER—CONTAINING TETRAHYDROFURAN FROM THE TOP OF THE SECOND COLUMN INTO THE FIRST COLUMN, PASSING A SIDESTREAM OF THE FIRST COLUMN INTO THE SECOND COLUMN, RECYCLING THE BOTTOM PRODUCT OF THE THIRD COLUMN INTO THE FIRST COLU.MN AND WITHDRAWING A DISTILLATE AT THE TOP OF THE FIRST COLUMN, WHICH COMPRISES PASSING A SIDESTREAM OF THE SECOND- COLUMN INTO THE THIRD COLUMN AND RECOVERING THE PURE TETRAHYDROFURAN AS THE TOP PRODUCT OF THE THIRD COLUMN.

公开(公告)号：DE102005031314A1

公开(公告)日：2007-01-18

申请号：DE102005031314

申请日：2005-07-05

Applicant: BASF AG

Inventor： WINDECKER GUNTHER ,  WECK ALEXANDER ,  STEINIGER MICHAEL ,  BREDEHOEFT JAN PETER ,  CARDONE BIANCA ,  KNAPPIK PETER ,  VANDEN HAUTTE DANY ,  PIERRE BERNARD ,  HAFFNER BEATRIX

IPC: C07D307/32 ,  B01D3/34 ,  C07C27/04 ,  C07C31/20 ,  C07C67/08 ,  C07C67/48 ,  C07D307/08 ,  C07D307/20

Abstract: The invention relates to a process for separating off maleic anhydride from a gas stream comprising maleic anhydride, in which a) the gas stream comprising maleic anhydride is brought into contact with a liquid absorbent phase comprising at least one high-boiling inert absorption medium for maleic anhydride and b) maleic anhydride is separated off from the resulting liquid absorbate phase by stripping with a hydrogen-comprising gas as stripping medium in a column, wherein the stripping medium is fed in at two points on the column which are at least one theoretical plate apart.

公开(公告)号：DE102004058886A1

公开(公告)日：2006-06-08

申请号：DE102004058886

申请日：2004-12-06

Applicant: BASF AG

Inventor： GRAFMANS HORST ,  MAAS STEFFEN ,  WECK ALEXANDER ,  RUETTER HEINZ ,  SCHULZ MICHAEL ,  ROS KARL-HEINZ

IPC: C07C231/02 ,  C07C233/05

Abstract: A process for preparing N,N-dimethylacetamide (DMAC) by continuously reacting methyl acetate (MeOAc) with dimethylamine (DMA) in the presence of a basic catalyst, wherein MeOAc is used in the form of a methanolic solution which is obtained as a by-product in the preparation of polyTHF by transesterifying polyTHF diacetate with methanol.

公开(公告)号：DE10357717A1

公开(公告)日：2005-07-14

申请号：DE10357717

申请日：2003-12-09

Applicant: BASF AG

Inventor： SCHLITTER STEPHAN ,  SCHUBERT OLGA ,  HESSE MICHAEL ,  BORCHERS SABINE ,  ROESCH MARKUS ,  PINKOS ROLF ,  WECK ALEXANDER ,  WINDECKER GUNTHER

IPC: B01J21/04 ,  B01J23/72 ,  B01J23/94 ,  B01J35/00 ,  B01J35/10 ,  B01J37/00 ,  B01J37/18 ,  B01J38/10 ,  B01J38/12 ,  C07C29/136 ,  C07C29/149 ,  C07D307/08 ,  C07D315/00

Abstract: The invention relates to a catalyst provided in the form of an extrudate, which contains 5 to 85% by weight of copper oxide and comprises, in the active material and as binders, the same oxidic carrier material. The invention also relates to the use of the catalyst for hydrogenating carbonyl compounds.