公开(公告)号：MX2007004953A

公开(公告)日：2007-06-14

申请号：MX2007004953

申请日：2005-10-22

Applicant: BASF AG

Inventor： VOSS HARTWIG ,  WOLFERT ANDREAS ,  STROEFER ECKHARD ,  SESING MARTIN ,  ROHDE THORSTEN

IPC: C07C265/12 ,  C07C263/10 ,  C07C265/14

Abstract: La invencion se refiere a un metodo para producir isocianatos al hacer reaccionar las aminas correspondientes con fosgeno en presencia de solventes. Dicho metodo se caracteriza porque los compuestos formando fusiones de sal con cloruro de hidrogeno se usan como solventes.

公开(公告)号：CA2627080A1

公开(公告)日：2007-05-10

申请号：CA2627080

申请日：2006-10-27

Applicant: BASF AG

Inventor： STROEFER ECKHARD ,  SIEGERT MARKUS ,  LANG NEVEN ,  BOEHLING RALF ,  STAMMER ACHIM ,  OLDENBURG JAN

IPC: C08G2/10 ,  C07D317/12 ,  C07D319/00 ,  C07D323/06

Abstract: The invention relates to a process for producing trioxane and at least one comonomer for producing (co)polymers on a trioxane basis, in which, in a first step, formaldehyde and at least one comonomer starting material are reacted in aqueous solution to form trioxane and comonomer, wherein a reaction mixture A1 containing trioxane, comonomer, formaldehyde, water and if appropriate comonomer starting material is obtained. In a second step, the reaction mixture A1 is distilled in a first distillation stage at a first pressure, wherein a trioxane- and comonomer-enriched stream B1 and an essentially water- , formaldehyde- and if appropriate comonomer starting material-containing stream B2 are obtained. In a third step, the stream B1 is distilled in a second distillation stage at a pressure which is above the pressure of the first distillation stage, wherein a trioxane-, comonomer- and water-containing stream C1 and a product stream C2 essentially consisting of comonomer and trioxane are obtained.

公开(公告)号：DE10295499B4

公开(公告)日：2007-04-19

申请号：DE10295499

申请日：2002-11-28

Applicant: BASF AG

Inventor： STROEFER ECKHARD ,  ARMBRUSTER HARALD ,  EGBERS GITTA ,  FREYHOF REINHARD ,  FRIESE THORSTEN ,  HECK LUDWIG E ,  HILDENBRAND PETER ,  ZEINER HARTMUT ,  SCHOLL STEPHAN ,  GOERTZ HANS-HELMUT

IPC: C08G2/08 ,  C08G4/00

公开(公告)号：DE102005043799A1

公开(公告)日：2007-04-12

申请号：DE102005043799

申请日：2005-09-13

Applicant: BASF AG

Inventor： KLOETZER MATTHIAS ,  STROEFER ECKHARD ,  KRASE VOLKER ,  SCHMIDT ANDREAS ,  SCHERBEL PETER

IPC: C07C263/06 ,  C07B43/10

Abstract: The invention provides a multistage process for continuously preparing organic, distillable polyisocyanates, preferably diisocyanates, more preferably aliphatic or cycloaliphatic diisocyanates, by reacting the corresponding organic polyamines with carbonic acid derivatives and alcohols to low molecular mass monomeric polyurethanes, and thermally cleaving said polyurethanes, in which at defined reaction stages the polyisocyanates prepared and unusable residues are separated off, and reusable by products and intermediates are recycled to upstream stages.

公开(公告)号：ES2270145T3

公开(公告)日：2007-04-01

申请号：ES03785813

申请日：2003-12-13

Applicant: BASF AG

Inventor： SOHN MARTIN ,  STROEFER ECKHARD ,  NEVEJANS FILIP ,  PENZEL ULRICH ,  PALLASCH HANS-JURGEN ,  VAN DEN ABEEL PETER

IPC: C07C263/20

Abstract: Procedimiento para la obtención de isocianatos mediante reacción de aminas con fosgeno en presencia de disolventes orgánicos inertes en un reactor, y subsiguiente elaboración de la mezcla de reacción que abandona el reactor, caracterizado porque la separación de disolventes se efectúa en un procedimiento de destilación de dos o más etapas, y separándose el disolvente en una primera instalación a una presión de 0, 1 a 15 bar, y en una segunda instalación, o instalación adicional, a 1 hasta 900 mbar, siendo el nivel de presión en la segunda instalación más reducido que en la primera instalación; situándose la temperatura de cola de la primera columna, según presión, entre 60ºC a 0, 1 bar y 270ºC a 15 bar, y la de la segunda columna, según presión, entre 75ºC a 1 mbar y 250ºC a 900 mbar, y empleándose el calor de condensación del vapor de disolvente de la primera instalación para la evaporación parcial o completa de disolvente en la segunda instalación.

公开(公告)号：DE50306511D1

公开(公告)日：2007-03-29

申请号：DE50306511

申请日：2003-05-13

Applicant: BASF AG

Inventor： FRIESE KATRIN ,  RAULS MATTHIAS ,  FREYHOF REINHARD ,  FRIESE THORSTEN ,  ARMBRUSTER HARALD ,  ZEINER HARTMUT ,  EGBERS GITTA ,  STROEFER ECKHARD ,  HECK LUDWIG ,  HILDENBRAND PETER

IPC: C07D323/06

Abstract: Production of trioxane by trimerization of formaldehyde in aqueous acid solution followed by separation of trioxane from a crude trioxane product mixture of trioxane, water and formaldehyde comprises: distillation of the crude trioxane; crystallization of the trioxane and; separation from the mother liquor followed by melting and distillation of other byproducts. A process for the production of trioxane by trimerization of formaldehyde in aqueous acid solution followed by separation of trioxane from a crude trioxane product mixture of trioxane, water and formaldehyde comprises: (a) distillation of the crude trioxane; (b) crystallization of the trioxane and; (c) separation from the mother liquor followed by; (d) melting and; (e) distillation of other byproducts.

公开(公告)号：AT353883T

公开(公告)日：2007-03-15

申请号：AT03752664

申请日：2003-05-13

Applicant: BASF AG

Inventor： FRIESE KATRIN ,  RAULS MATTHIAS ,  FREYHOF REINHARD ,  FRIESE THORSTEN ,  ARMBRUSTER HARALD ,  ZEINER HARTMUT ,  EGBERS GITTA ,  STROEFER ECKHARD ,  HECK LUDWIG ,  HILDENBRAND PETER

IPC: C07D323/06

Abstract: Production of trioxane by trimerization of formaldehyde in aqueous acid solution followed by separation of trioxane from a crude trioxane product mixture of trioxane, water and formaldehyde comprises: distillation of the crude trioxane; crystallization of the trioxane and; separation from the mother liquor followed by melting and distillation of other byproducts. A process for the production of trioxane by trimerization of formaldehyde in aqueous acid solution followed by separation of trioxane from a crude trioxane product mixture of trioxane, water and formaldehyde comprises: (a) distillation of the crude trioxane; (b) crystallization of the trioxane and; (c) separation from the mother liquor followed by; (d) melting and; (e) distillation of other byproducts.

公开(公告)号：DE102005037294A1

公开(公告)日：2007-02-15

申请号：DE102005037294

申请日：2005-08-08

Applicant: BASF AG

Inventor： LANG NEVEN ,  STROEFER ECKHARD ,  STAMMER ACHIM ,  FRIESE THORSTEN ,  SIEGERT MARKUS ,  HASSE HANS ,  GRUETZNER THOMAS ,  BLAGOV SERGEJ

IPC: C07D323/06

Abstract: The invention relates to an integrated process for preparing trioxane from formaldehyde in which, in a first step, a stream A 1 comprising water and formaldehyde and a recycle stream B 2 consisting substantially of water and formaldehyde are fed to a trioxane synthesis reactor in which the formaldehyde is converted to trioxane to obtain a product stream A 2 comprising trioxane, water and formaldehyde. Stream A 2 and a recycle stream D 1 comprising trioxane, water and formaldehyde are fed to a first distillation column and distilled at a pressure in the range from 0.1 to 2.5 bar to obtain a stream B 1 enriched in trioxane, and the stream B 2 consisting substantially of water and formaldehyde. Stream B 1 is fed to a second distillation column and distilled at a pressure in the range from 0.2 to 17.5 bar to obtain a product stream C 2 consisting substantially of trioxane, and a stream C 1 comprising trioxane, water and formaldehyde. Stream C 1 is fed to a third distillation column and distilled at a pressure in the range from 1 to 10 bar to obtain the recycle stream D 1 comprising trioxane, water and formaldehyde, and a stream D 2 consisting substantially of water.

公开(公告)号：DE102005027814A1

公开(公告)日：2006-12-21

申请号：DE102005027814

申请日：2005-06-15

Applicant: BASF AG

Inventor： FIENE MARTIN ,  BOEHLING RALF ,  STROEFER ECKHARD ,  VOGEL HERBERT ,  MESRI FATIMA

IPC: C07C263/20 ,  B09B3/00 ,  C07B43/04 ,  C07C209/62 ,  C07C263/10 ,  C08J11/10

Abstract: The present invention provides a process for working up isocyanate adducts, comprising the steps of a) reacting the isocyanate adducts with pure ammonia, b) working up the reaction products obtained in step a), c) recycling the amines formed into the isocyanate production.

公开(公告)号：DE102005014847A1

公开(公告)日：2006-10-05

申请号：DE102005014847

申请日：2005-03-30

Applicant: BASF AG

Inventor： MUELLER CHRISTIAN ,  STROEFER ECKHARD

IPC: C07C265/14 ,  C07C209/78 ,  C07C263/10

Abstract: The invention relates to a process for preparing isocyanates, which comprises the steps (1) preparation of a crude MDA mixture by reaction of aniline with formaldehyde, with the reaction conditions being selected so that the resulting crude MDA can be converted completely into the gas phase, (2) conversion of the crude MDA mixture from step (1) into the gas phase and (3) phosgenation of crude MDA in the gas phase to give MMDI and PMDI.