公开(公告)号：JP2000169408A

公开(公告)日：2000-06-20

申请号：JP34913799

申请日：1999-12-08

Applicant: BASF AG

Inventor： RAHN RALF-THOMAS ,  RUST HARALD ,  RUEHL THOMAS DR ,  HENKELMANN JOCHEM DR ,  STUTZ SUSANNE DR

IPC: C07C29/82 ,  C07C29/16 ,  C07C29/80 ,  C07C33/025 ,  C07C33/042 ,  C07C33/048

Abstract: PROBLEM TO BE SOLVED: To provide a continuous distillation method having excellent economic efficiency, guaranteeing safety of high level in the case of isolating α- ethynylcarbinol on an industrial scale. SOLUTION: α-Ethynylcarbinol is isolated from a liquid reaction mixture obtained by adding acetylene to an α,β-unsaturated carbonyl compound by a continuous distillation comprising introducing a feed stream to the central part of a distillation column, azeotropically distilling away most of water together with a solvent at the top of the column and taking out α- ethynylcarbinol of the objective product at a part below the feeding part to the column.

公开(公告)号：WO0248128A3

公开(公告)日：2002-08-15

申请号：PCT/EP0114394

申请日：2001-12-07

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

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

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

CPC classification number: B01J23/72 ,  B01J23/80 ,  C07D307/08

Abstract: The invention relates to a method for the production of optionally alkyl-substituted THF. The above is obtained by catalytic hydrogenation of C4-dicarboxylic acids and/or derivatives thereof, in the gas phase, using a catalyst containing 20 wt. %, preferably >30 wt %, in particular 35 to 90 wt. % of an oxidic support with acidic centres, whereby the method is carried out with a hot spot temperature of 240 to 280 DEG C and a catalytic loading of 0.01 to 1.0, preferably 0.02 to 1, in particular 0.05 to 0.5 kg reactant/l catalyst.hour.

Abstract translation: 本发明描述了任选烷基取代的THF的方法。 这是通过在C4二羧酸和/或它们的衍生物的气相催化加氢用催化剂，其包含<80重量％，优选<70重量％获得的（重量），特别是10至65重量％的CuO和> 20的 .-％，优选> 30重量％，特别是35至90重量具有在240热点Temoeratur至280℃的酸中心，与该过程中的氧化性载体的％，和0.01 Katalystorbelastungen 至1.0，优选0.02至1，特别是0.05至0.5千克原料/升Katalysator.Stunde。

公开(公告)号：CA2329353C

公开(公告)日：2009-03-31

申请号：CA2329353

申请日：1999-04-21

Applicant: BASF AG

Inventor： PINKOS ROLF ,  RAHN RALF-THOMAS ,  KAIBEL GERD ,  FISCHER ROLF

IPC: C07C29/17 ,  C07B61/00 ,  C07C29/136 ,  C07C29/149 ,  C07C29/88 ,  C07C31/20 ,  C07C51/16 ,  C07C67/08 ,  C07C69/60 ,  C07D307/08 ,  C07D307/33 ,  C07D315/00

Abstract: The invention relates to a method for producing 1,4-butanediol, tetrahydrofuran and .gamma.-butyrolactone by oxidation of butane to a product flow containing maleic anhydride, absorption of maleic anhydride fro m the product flow with a high-boiling alcohol, which yields a liquid absorption product containing maleic acid half- and diesters and hi gh- boiling alcohol, post-esterification of the liquid absorption product and subsequent hydrogenation of the post-esterified product in the liquid phase. The high-boiling alcohol is a polyvalent alcohol with a boiling point at normal pressure of more than 233 .degree.C and the post-esterified product has an acid value of less than 30 mg KOH/g and a water content of less than 1 weight %.

公开(公告)号：CA2329477C

公开(公告)日：2009-03-24

申请号：CA2329477

申请日：1999-04-16

Applicant: BASF AG

Inventor： RAHN RALF-THOMAS ,  PINKOS ROLF ,  KAIBEL GERD ,  FISCHER ROLF

IPC: C07C29/17 ,  C07C29/149 ,  C07C31/20 ,  C07C51/16 ,  C07C67/03 ,  C07C67/08 ,  C07C69/60 ,  C07D307/08 ,  C07D307/32 ,  C07D307/33 ,  C07D315/00

Abstract: The invention relates to a method for producing 1,4-butanediol and possibly .gamma.-butyrolactone and tetrahydrofurane by oxidation of butane or benzol into a product flow containing maleic anhydride, absorption of maleic anhydride from the product flow by means of an inert, high-boiling solvent in an absorption stage, which yields a liquid absorption product, and esterification of said liquid absorption product with a C1-C5 esterification alcohol in an esterification step, yielding an esterification product containing the corresponding diester and high-boiling inert solvent. This is followed by hydrogenation of the esterification product, which results in an hydrogenation product containing the products 1,4-butanediol and optionally .gamma.-butyrolactone and tetrahydrofurane as well as the esterification alcohol. The hydrogenation product is separated by distillation into the products and the esterification alcohol and the esterification alcohol is returned to the esterification zone. Prior to hydrogenation the esterification product i s separated by distillation under reduced pressured into the diester and the inert solvent, the inert solvent is returned to the absorption stage and the diester is hydrogenated in the liquid phase on a fixed-bed catalyst.

公开(公告)号：AT382614T

公开(公告)日：2008-01-15

申请号：AT01951476

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：DE10301703A1

公开(公告)日：2004-07-29

申请号：DE10301703

申请日：2003-01-17

Applicant: BASF AG

Inventor： KUHRS CHRISTIAN ,  DANZ ECKEHARD ,  STEINER WOLFGANG ,  RAHN RALF-THOMAS ,  GRASLER THOMAS ,  GEIER REINER ,  HARTH KLAUS ,  HOELZLE MARKUS

IPC: C07D251/60 ,  B01J21/04 ,  B01J21/12

Abstract: Production of melamine by urea decomposition using a solid catalyst takes place in a main reactor containing a catalyst of low Lewis acidity and a post-reactor containing a catalyst of the same or higher (especially higher) Lewis acidity.

公开(公告)号：BR0208959A

公开(公告)日：2004-04-27

申请号：BR0208959

申请日：2002-04-22

Applicant: BASF AG

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

IPC: C07D307/60 ,  C07C51/215 ,  C07C51/44 ,  C07C51/573 ,  C07C57/145 ,  C07C57/15

Abstract: In a process for purifying an organic solvent for the absorption of maleic anhydride from a gaseous mixture, in which the maleic anhydride is separated off from the solvent, a substream is taken from the solvent stream, this substream is distilled and returned to the solvent circuit, the proposed improvement comprises separating off a low-boiling fraction and a high-boiling fraction from the fraction consisting essentially of purified solvent and feeding the fraction consisting essentially of purified solvent back into the solvent stream.

公开(公告)号：ES2168852T3

公开(公告)日：2002-06-16

申请号：ES99907539

申请日：1999-02-11

Applicant: BASF AG

Inventor： PINKOS ROLF ,  RAHN RALF-THOMAS

IPC: C07C29/149 ,  C07C29/17 ,  C07C31/20 ,  C07C51/573 ,  C07C57/145 ,  C07C67/08 ,  C07C69/60 ,  C07D307/08 ,  C07D307/33

Abstract: The invention relates to a process for the separation of maleic anhydride from the maleic anhydride-containing reactor offgases from the preparation of maleic anhydride by the oxidation of hydrocarbons, in which this gas stream is brought into contact with a high-boiling, inert absorbent for maleic anhydride and maleic anhydride is separated from the resultant liquid absorbate phase by vapor stripping, where the stripping agent used is an alcohol, and at least some of the maleic anhydride is reacted with the alcohol to give the ester.

公开(公告)号：DE19806038A1

公开(公告)日：1999-08-19

申请号：DE19806038

申请日：1998-02-13

Applicant: BASF AG

Inventor： PINKOS ROLF ,  RAHN RALF-THOMAS

IPC: C07C29/149 ,  C07C29/17 ,  C07C31/20 ,  C07C51/573 ,  C07C57/145 ,  C07C67/08 ,  C07C69/60 ,  C07D307/08 ,  C07D307/33 ,  C07D307/60 ,  C07D207/26 ,  B01D3/38

Abstract: The invention relates to a method for separating maleic anhydride from the maleic anhydride-containing reactor waste gases resulting from maleic anhydride production by hydrocarbon oxidation. According to said method the gas stream is placed into contact with a high-boiling inert absorption agent for maleic anhydride and maleic anhydride is separated from the resulting liquid absorbate phase by steam stripping. An alcohol is used as desorption agent and maleic anhydride at least partly reacts with the alcohol to yield an ester.

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.