公开(公告)号：DE50103263D1

公开(公告)日：2004-09-16

申请号：DE50103263

申请日：2001-12-07

Applicant: BASF AG

Inventor： BORCHERT HOLGER ,  SCHLITTER STEPHAN ,  FISCHER ROLF-HARTMUTH ,  ROESCH MARKUS ,  STEIN FRANK ,  RAHN RALF-THOMAS ,  WECK ALEXANDER ,  KAIBEL GERD

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

Abstract: The present invention relates to a process for the gas-phase hydrogenation of C4-dicarboxylic acids and/or their derivatives over a catalyst based on copper oxide to give substituted or unsubstituted gamma-butyrolactone and/or tetrahydrofuran, which comprises, which a first reaction zone in which the C4-dicarboxylic acid and/or its derivatives is/are reacted to give a mixture comprising a substituted or unsubstituted gamma-butyrolactone as main product and a subsequent second reaction zone in which the substituted or unsubstituted gamma-butyrolactone present in the mixture from the first hydrogenation step is reacted at a temperature lower than the temperature in the first hydrogenation step to give substituted or unsubstituted tetrahydrofuran.

公开(公告)号：AU2003299298A1

公开(公告)日：2004-07-09

申请号：AU2003299298

申请日：2003-12-03

Applicant: BASF AG

Inventor： FISCHER ROLF-HARTMUTH ,  KRUG THOMAS ,  HAUNERT ANDREA ,  ROPER MICHAEL ,  SIRCH TILMAN ,  STUER WOLFRAM

IPC: C07C29/17 ,  C07C69/593 ,  C07C29/149 ,  C07C31/20 ,  C07C67/347

Abstract: Production of 1,6-hexanediol of purity at least 99.5 % comprises: (1) catalytically dimerizing a 1-8C acrylic acid ester in presence of rhodium compounds to a mixture mainly of 2- and 3-hexenedioic acid diesters; (2) hydrogenating the ester mixture in chromium-free mainly copper-containing catalysts; and (3) purifying the resulting diol mixture by fractional distillation.

公开(公告)号：AU2003283386A1

公开(公告)日：2004-06-15

申请号：AU2003283386

申请日：2003-11-11

Applicant: BASF AG

Inventor： FISCHER ROLF-HARTMUTH ,  KRUG THOMAS ,  SIRCH TILMAN ,  HAUNERT ANDREA

IPC: C07C29/149 ,  C07C31/20

公开(公告)号：DE10253751A1

公开(公告)日：2004-06-03

申请号：DE10253751

申请日：2002-11-19

Applicant: BASF AG

Inventor： MODI ANDREA ,  FISCHER ROLF-HARTMUTH ,  KRUG THOMAS ,  SIRCH TILMAN

IPC: C07C29/149 ,  C07C31/20

公开(公告)号：AU2003293671A1

公开(公告)日：2004-06-03

申请号：AU2003293671

申请日：2003-11-11

Applicant: BASF AG

Inventor： MAIXNER STEFAN ,  MELDER JOHANN-PETER ,  LUYKEN HERMANN ,  ANSMANN ANDREAS ,  BENISCH CHRISTOPH ,  BASSLER PETER ,  FISCHER ROLF-HARTMUTH

IPC: C07D201/16 ,  C07D201/08

Abstract: A process for the purification of crude caprolactam, prepared by reaction of a mixture comprising 6-aminocapronitrile and water, comprises a three stage distillation process with feeding of the crude caprolactam and an inorganic acid having a b. pt. above the b. pt. of the caprolactam to a first distillation column. A process for the purification of crude caprolactam, prepared by reaction of a mixture comprising 6-aminocapronitrile and water in the presence of a catalyst to form a mixture comprising caprolactam, ammonia, water and high and low b. pt. byproducts followed by removal of ammonia to yield a mixture of caprolactam, water and high and low b. pt. byproducts followed by at least partial removal of water to yield a crude caprolactam containing caprolactam and high and low b. pt. byproducts, comprises: (a) feeding of the crude caprolactam and an inorganic acid having a b. pt. above the b. pt. of the caprolactam to a first distillation column; (b) distillation of the crude caprolactam and inorganic acid to form a sump stream and an overhead stream; (c) feeding of the overhead stream to a second distillation column; (d) distillation of the stream to form a sump stream and overhead stream; (e) feeding of the overhead stream to a third distillation column; (f) distillation of the overhead stream to form a sump stream and purified caprolactam in the overhead stream; and (g) feeding of the sump stream to the first distillation column.

公开(公告)号：AU2003282093A1

公开(公告)日：2004-06-03

申请号：AU2003282093

申请日：2003-11-11

Applicant: BASF AG

Inventor： FISCHER ROLF-HARTMUTH ,  LUYKEN HERMANN ,  ANSMANN ANDREAS ,  BASSLER PETER ,  BENISCH CHRISTOPH ,  MAIXNER STEFAN ,  MELDER JOHANN-PETER

IPC: C07D201/08 ,  C07D201/16

Abstract: A process for removing high boilers from crude caprolactam which comprises high boilers, caprolactam and in some cases low boilers, and which has been obtained by a) reacting 6-aminocapronitrile with water to give a reaction mixture b) removing ammonia and unconverted water from the reaction mixture to obtain crude caprolactam, which comprises c) feeding the crude caprolactam to a distillation apparatus to obtain a first substream via the top as a product and a second substream via the bottom, by setting the pressure in the distillation in such a way that the bottom temperature does not go below 170° C., and adjusting the second substream in such a way that the caprolactam content of the second substream is not less than 10% by weight, based on the entire second substream.

公开(公告)号：CA2505359A1

公开(公告)日：2004-05-27

申请号：CA2505359

申请日：2003-11-11

Applicant: BASF AG

Inventor： LUYKEN HERMANN ,  FISCHER ROLF-HARTMUTH ,  MELDER JOHANN-PETER ,  MAIXNER STEFAN ,  BASSLER PETER ,  ANSMANN ANDREAS ,  BENISCH CHRISTOPH

IPC: C07D201/16 ,  C07D201/08

Abstract: The invention relates to a method for purifying crude caprolactam that has been obtained by: 1) reacting a mixture (I) containing 6-aminocapronitrile a nd water to form a mixture (II) containing caprolactam, ammonia, water, high boilers and low boilers in the presence of a catalyst followed by; 2) removi ng ammonia from mixture (II) while obtaining a mixture (III) that contains caprolactam, water, high boilers and low boilers, after which; 3) water is entirely or partially removed from mixture (III) while obtaining a crude caprolactam (IV) that contains caprolactam, high boilers and low boilers. Th e inventive method is characterized in that: a) the crude caprolactam and an inorganic acid, which has a boiling point higher that that of caprolactam under distillation conditions in accordance with subsequent steps b) to h), are fed to a first distillation device K1; b) the crude caprolactam and the inorganic acid are distilled in the first distillation device K1 during whic h a first partial flow in the bottom area and a second partial flow in the top area are withdrawn from the distillation device K1; c) the second partial fl ow from step b) is fed to a second distillation device K2; d) the second partia l flow from step b) is distilled in the second distillation device K2 during which a first partial flow in the bottom area and a second partial flow in t he top area are withdrawn from the distillation device K2; e) a first partial flow from step d) is fed to a third distillation device K3; f) the first partial flow from step d) is distilled in the third distillation device K3 during which a first partial flow in the bottom area and purified caprolacta m in the top area are withdrawn from the distillation device K3, and; g) the first partial flow from step f) is fed to the first distillation device K1.

公开(公告)号：CA2505356A1

公开(公告)日：2004-05-27

申请号：CA2505356

申请日：2003-11-11

Applicant: BASF AG

Inventor： BENISCH CHRISTOPH ,  FISCHER ROLF-HARTMUTH ,  LUYKEN HERMANN ,  ANSMANN ANDREAS ,  BASSLER PETER ,  MELDER JOHANN-PETER ,  MAIXNER STEFAN

IPC: C07D201/08 ,  C07D201/16

Abstract: The invention relates to a method for separating high boilers out from a cru de caprolactam, which contains high boilers, caprolactam and, optionally, light boilers, and which has been obtained by: a) reacting 6-aminocapronitrile wit h water to form a reaction mixture, and; b) separating ammonia and unreacted water out from the reaction mixture while obtaining a crude caprolactam. The invention is characterized in that: c) the crude caprolactam is fed to a distillation device while obtaining, as a product, a first partial flow via the top, and obtaining a second partial flow via the bottom. During distillation, the pressure is set so that a bottom temperature of 170 ~C is not fallen below, and the second partial flow is set so that the caprolactam content of the second partial flow is no less than 10 % by weight with regar d to the entire second partial flow.

公开(公告)号：ZA200301089B

公开(公告)日：2004-04-21

申请号：ZA200301089

申请日：2003-02-10

Applicant: BASF AG

Inventor： BASLER PETER ,  FISCHER ROLF-HARTMUTH ,  LOTH WOLFGANG ,  WINTERLING HELMUT

IPC: C08G69/04 ,  C08G69/00 ,  C08G69/08 ,  C08G69/16 ,  C08G

Abstract: The continuous process for preparing a polyamide by reacting at least one aminonitrile with water comprises:(1) reacting at least one aminonitrile with water in the presence of an organic liquid diluent at from 90 to 400° C. and from 0.1 to 35x10 Pa in a flow tube containing a Brönsted acid catalyst selected from a beta-zeolite catalyst, a sheet-silicate catalyst or a titanium dioxide catalyst comprising from 70 to 100% by weight of anatase and from 0 to 30% by weight of rutile and in which up to 40% by weight of the titanium dioxide may be replaced by tungsten oxide, to obtain a reaction mixture,(2) further reacting the reaction mixture at from 150 to 400° C. and a pressure which is lower than the pressure in stage 1 in the presence of a Brönsted acid catalyst selected from a beta-zeolite catalyst, a sheet-silicate catalyst or a titanium dioxide catalyst comprising from 70 to 100% by weight of anatase and from 0 to 30% by weight of rutile and in which up to 40% by weight of the titanium dioxide may be replaced by tungsten oxide, the temperature and pressure being selected so as to obtain a first gas phase and a first liquid phase or a first solid phase or a mixture of first solid and first liquid phases and so that the first gas phase is separated from the first liquid phase or first solid phase or from the mixture of first liquid and first solid phases, and(3) admixing the first liquid or the first solid phase or the mixture of first liquid and first solid phases with a gaseous or liquid phase comprising water at from 150 to 370° C. and from 0.1 to 30x10 Pa, to obtain a product mixture.

公开(公告)号：AU2003264115A1

公开(公告)日：2004-03-29

申请号：AU2003264115

申请日：2003-08-28

Applicant: BASF AG

Inventor： FISCHER ROLF-HARTMUTH ,  BOTTKE NILS

IPC: C07C29/136 ,  C07B53/00 ,  C07B61/00 ,  C07C29/149 ,  C07C31/20 ,  C07C31/22 ,  C07C213/00 ,  C07C215/08

Abstract: The invention relates to a process for preparing optically active 2-amino-, 2-chloro-, 2-hydroxy- or 2-alkoxy-1-alcohols by catalytically hydrogenating appropriate optically active 2-amino-, 2-chloro-, 2-hydroxy- and 2-alkoxycarboxylic acids or their acid derivatives in the presence of catalysts comprising palladium and rhenium or platinum and rhenium.