公开(公告)号：DE10225928A1

公开(公告)日：2003-12-24

申请号：DE10225928

申请日：2002-06-11

Applicant: BASF AG

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

IPC: C07C29/149 ,  C07D315/00 ,  C07C29/132 ,  C07C31/20 ,  C07D307/20 ,  C07D307/32

Abstract: The invention relates to a method for producing optionally akyl-substituted 1,4-butandiol by two-stage catalytic hydration in the gaseous phase of C4 dicarboxylic acids and/or the derivatives thereof with the steps of: a) introducing a gaseous flow of a C4 dicarboxylic acid or a derivative thereof at 200 to 300 °C and 2 to 60 bar in a first reactor and catalytic gas phase hydration to a mainly optionally alkyl-substituted gamma-butyrolactone containing product; b) introducing the product flow so obtained into a second reactor at a temperature of from 150 °C to 240 °C and a pressure of from 15 to 100 bar and catalytic gas phase hydration to optionally alkyl-substituted 1,4-butandiol; c) removing the desired product from the intermediates, byproducts and possibly not reacted educt; d) optionally returning non-reacted intermediates to one or both hydration stages, whereby in both hydration stages one catalyst each is used which comprises = 5 % by weight, preferably 5 to 95 % by weight, especially 20 to 90 % by weight of an oxidic carrier, the pressure prevailing in the second reactor is higher than in the first reactor, and the product mixture removed from the first reactor is introduced into the second reactor without further purifying it.

公开(公告)号：AU2003242665A1

公开(公告)日：2003-12-22

申请号：AU2003242665

申请日：2003-06-11

Applicant: BASF AG

Inventor： BORCHERT HOLGER ,  SCHUBERT MARKUS ,  ROSCH MARKUS ,  BOTTKE NILS ,  FISCHER ROLF-HARTMUTH ,  WECK ALEXANDER ,  WINDECKER GUNTHER ,  HEYDRICH GUNNAR ,  HESSE MICHAEL ,  SCHLITTER STEPHAN

IPC: C07B61/00 ,  C07C29/149 ,  C07C31/20

Abstract: Optionally alkyl-substituted 1,4-butanediol is prepared from C 4 -dicarboxylic acids and/or of derivatives thereof by: a) introducing a gas stream of the C 4 -dicarboxylic acid or the derivative thereof in a first reactor in the gas phase to obtain a product which contains mainly optionally alkyl-substituted gamma-butyro-lactone; b) removing succinic anhydride from the product of step a); c) catalytically hydrogenating the product of step b) in a second reactor in the gas phase to obtain optionally alkyl-substituted 1,4-butanediol; d) removing the desired product from intermediates, by-products and any unconverted reactants; and e) optionally recycling unconverted intermediates into one or both hydrogenation stages. The catalysts employed in each of the hydrogenation stages comprise

公开(公告)号：AU2003238491A8

公开(公告)日：2003-12-22

申请号：AU2003238491

申请日：2003-06-10

Applicant: BASF AG

Inventor： ROSCH MARKUS ,  WECK ALEXANDER ,  HEYDRICH GUNNAR ,  SCHLITTER STEPHAN ,  FISCHER ROLF-HARTMUTH ,  BORCHERT HOLGER ,  SCHUBERT MARKUS ,  HESSE MICHAEL ,  BOTTKE NILS ,  WINDECKER GUNTHER

IPC: C07C29/149 ,  C07D315/00 ,  C07C31/20 ,  C07D307/20

Abstract: The invention relates to a method for producing optionally akyl-substituted 1,4-butandiol by two-stage catalytic hydration in the gaseous phase of C4 dicarboxylic acids and/or the derivatives thereof with the steps of: a) introducing a gaseous flow of a C4 dicarboxylic acid or a derivative thereof at 200 to 300 °C and 2 to 60 bar in a first reactor and catalytic gas phase hydration to a mainly optionally alkyl-substituted gamma-butyrolactone containing product; b) introducing the product flow so obtained into a second reactor at a temperature of from 150 °C to 240 °C and a pressure of from 15 to 100 bar and catalytic gas phase hydration to optionally alkyl-substituted 1,4-butandiol; c) removing the desired product from the intermediates, byproducts and possibly not reacted educt; d) optionally returning non-reacted intermediates to one or both hydration stages, whereby in both hydration stages one catalyst each is used which comprises = 5 % by weight, preferably 5 to 95 % by weight, especially 20 to 90 % by weight of an oxidic carrier, the pressure prevailing in the second reactor is higher than in the first reactor, and the product mixture removed from the first reactor is introduced into the second reactor without further purifying it.

公开(公告)号：DE50303129D1

公开(公告)日：2006-06-01

申请号：DE50303129

申请日：2003-09-04

Applicant: BASF AG

Inventor： PINKOS ROLF ,  GERSTLAUER ACHIM ,  HAUBNER MARTIN ,  SCHLITTER STEPHAN ,  KAESHAMMER STEFAN ,  PFAFF KLAUS-PETER

IPC: C08G65/20

Abstract: Process for preparation of mono- or diesters of tetrahydrofuran homo- or copolymer by polymerisation of tetrahydrofuran in the presence of at least one telogen and/or comonomers using an acid catalyst where the polymerisation reactor is started with a mixture of polytetrahydrofuran, its mono- or diester and /or tetrahydrofuran copolymer, tetrahydrofuran, optionally a copolymer and at least one carboxylic acid and/or a carboxylic acid anhydride is new.

公开(公告)号：DE50300824D1

公开(公告)日：2005-08-25

申请号：DE50300824

申请日：2003-02-28

Applicant: BASF AG

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

IPC: B01D3/14 ,  C07D307/08

Abstract: Crude water-containing tetrahydrofuran is purified 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 column, and withdrawing a distillate at the top of the first column. Additionally, a sidestream of the second column is passed into the third column and the purified tetrahydrofuran is recovered as the top product of the third column.

公开(公告)号：DE10359810A1

公开(公告)日：2005-07-21

申请号：DE10359810

申请日：2003-12-19

Applicant: BASF AG

Inventor： GERSTLAUER ACHIM ,  HAUBNER MARTIN ,  SCHLITTER STEPHAN ,  KAESHAMMER STEFAN

IPC: C08G65/20 ,  C08G65/26

Abstract: A method for the production of mono- and di-esters of poly-tetrahydrofuran (poly-THF) or THF copolymers by polymerisation of THF on an acid catalyst in presence of telogen(s) and/or comonomer(s) (I), in which (I) is/are added to the first reactor of a reactor cascade and the amount of catalyst required for one reactor is divided between all the reactors.

公开(公告)号：DE10357716A1

公开(公告)日：2005-07-14

申请号：DE10357716

申请日：2003-12-09

Applicant: BASF AG

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

IPC: B01J23/72 ,  B01J35/02 ,  B01J37/00 ,  B01J37/03 ,  C07D307/08 ,  C07D307/33 ,  B01J35/10

公开(公告)号：DE10351697A1

公开(公告)日：2005-06-09

申请号：DE10351697

申请日：2003-11-05

Applicant: BASF AG

Inventor： ROESCH MARKUS ,  PINKOS ROLF ,  JUNICKE HENRIK ,  HESSE MICHAEL ,  SCHLITTER STEPHAN ,  WECK ALEXANDER ,  WINDECKER GUNTHER

IPC: C07C29/149 ,  C07C31/20 ,  B01J23/72

公开(公告)号：ES2223933T3

公开(公告)日：2005-03-01

申请号：ES01984809

申请日：2001-12-07

Applicant: BASF AG

Inventor： BORCHERT HOLGER ,  SCHLITTER STEPHAN ,  FISCHER ROLF-HARTMUTH ,  ROSCH MARKUS ,  STEIN FRANK ,  RAHN RALF-THOMAS

IPC: C07B61/00 ,  C07D307/08 ,  C07D307/33

Abstract: Procedimiento de hidrogenado en fase gaseosa de ácidos dicarboxílicos con 4 átomos de carbono y/o sus derivados para dar -butirolactona, en caso dado substituida y/o tetrahidrofurano, en un catalizador a base de óxido de Cu, que comprende una primera zona de reacción, en la que se hace reaccionar el ácido dicarboxílico con 4 átomos de carbono, o sus derivados, para dar una mezcla que contiene como producto principal -butirolactona, en caso dado substituida, y una segunda zona de reacción subsiguiente, en la que se hace reaccionar la -butirolactona que se encuentra en la mezcla de la primera etapa de hidrogenado, en caso dado substituida, a una temperatura que es más reducida que la temperatura en la primera etapa de hidrogenado, para dar tetrahidrofurano, en caso dado substituido.

公开(公告)号：DE50103810D1

公开(公告)日：2004-10-28

申请号：DE50103810

申请日：2001-12-07

Applicant: BASF AG

Inventor： FISCHER ROLF-HARTMUTH ,  STEIN FRANK ,  PINKOS ROLF ,  HESSE MICHAEL ,  SPRAGUE JOLYON ,  ROESCH MARKUS ,  BORCHERT HOLGER ,  SCHLITTER STEPHAN ,  RAHN RALF-THOMAS ,  WECK ALEXANDER

IPC: B01J23/72 ,  B01J23/80 ,  C07C27/06 ,  C07D307/08

Abstract: Unsubstituted or alkyl-substituted THF is obtained by catalytic hydrogenation in the gas phase of C4-dicarboxylic acids and/or their derivatives using a catalyst comprising 20% by weight, preferably >30% by weight, in particular from 35 to 90% by weight, of an oxidic support having acid centers, at a hot spot temperature of from 240 to 310° C., preferably from 240 to 280° C., and a WHSV over the catalyst of from 0.01 to 1.0, preferably from 0.02 to 1, in particular from 0.05 to 0.5, kg of starting material/l of catalystxhour.