-
公开(公告)号：FI865079A
公开(公告)日：1987-06-13
申请号：FI865079
申请日：1986-12-12
Applicant: BASF AG
Inventor： EICHHORN HANS-DIETER , MENGER VOLKMAR , REUTER PETER , SCHMIDT JOHANNES E , SCHWARZMANN MATTHIAS
IPC: C07C51/265 , C07D
-
公开(公告)号：ES2233867T3
公开(公告)日：2005-06-16
申请号：ES02776935
申请日：2002-08-20
Applicant: BASF AG
Inventor： CIPRIAN JURGEN , BEER WULFRICH FRIEDEMANN , MENGER VOLKMAR
IPC: C08G65/20 , C08G65/26 , C08G65/30 , C08G65/331
Abstract: Procedimiento para la fabricación de una disolución alcohólica de politetrahidrofurano con grupos OH terminales (PTHF) a partir del correspondiente éter de politetrametileno con grupos aciloxi terminales mediante transesterificación con alcoholes en presencia de un catalizador que contiene metal alcalino o alcalinotérreo, en el que inmediatamente tras la transesterificación la disolución de PTHF se conduce a través de al menos un intercambiador iónico para la separación de los iones metálicos alcalinos o alcalinotérreos en presencia de una cantidad catalítica de agua, caracterizado porque la separación de los iones metálicos alcalinos o alcalinotérreos se realiza en una instalación de intercambio iónico totalmente continua, que presenta: - varias celdas de intercambio iónico (Z) que se disponen en una plataforma giratoria respectivamente con un elemento distribuidor y uno colector y - una válvula central (V) con un disco de estator (S) y un disco de rotor (R), a través de los cuales se realiza la carga y descarga de todos los flujos de líquidos en la instalación de intercambio iónico, así como con - conducciones de carga (a) y descarga (b) desde el elemento distribuidor o elemento colector de cada celda de intercambio iónico (Z) hacia la válvula central (V).
-
公开(公告)号：DE50201860D1
公开(公告)日：2005-01-27
申请号：DE50201860
申请日：2002-08-20
Applicant: BASF AG
Inventor： CIPRIAN JUERGEN , BEER WULFRICH FRIEDEMANN , MENGER VOLKMAR
IPC: C08G65/20 , C08G65/26 , C08G65/30 , C08G65/331
Abstract: In a process for preparing polytetrahydrofuran having terminal OH groups (PTHF) from the corresponding polytetramethylene ether having acyloxy end groups by transesterification with alcohols in the presence of a sodium-containing catalyst followed by passing the alcoholic PTHF solution in the presence of a catalytic amount of water directly through at least one ion exchanger to remove the sodium ions, the removal of the sodium ions is carried out in a fully continuous ion exchange unit which comprises:a plurality of ion exchange cells (Z) which are arranged on a rotary platform and are each provided with a distribution element and a collection element anda central valve (V) having a stator disk (S) and a rotor disk (R) via which the introduction and discharge of all liquid streams into or out of the ion exchange unit occurs, andfeed and discharge lines from each ion exchange cell (Z) to the central valve (V).
-
公开(公告)号：AT285431T
公开(公告)日：2005-01-15
申请号：AT02776935
申请日：2002-08-20
Applicant: BASF AG
Inventor： CIPRIAN JUERGEN , BEER WULFRICH FRIEDEMANN , MENGER VOLKMAR
IPC: C08G65/20 , C08G65/26 , C08G65/30 , C08G65/331
Abstract: In a process for preparing polytetrahydrofuran having terminal OH groups (PTHF) from the corresponding polytetramethylene ether having acyloxy end groups by transesterification with alcohols in the presence of a sodium-containing catalyst followed by passing the alcoholic PTHF solution in the presence of a catalytic amount of water directly through at least one ion exchanger to remove the sodium ions, the removal of the sodium ions is carried out in a fully continuous ion exchange unit which comprises:a plurality of ion exchange cells (Z) which are arranged on a rotary platform and are each provided with a distribution element and a collection element anda central valve (V) having a stator disk (S) and a rotor disk (R) via which the introduction and discharge of all liquid streams into or out of the ion exchange unit occurs, andfeed and discharge lines from each ion exchange cell (Z) to the central valve (V).
-
公开(公告)号：ES2207487T3
公开(公告)日：2004-06-01
申请号：ES00903595
申请日：2000-01-20
Applicant: BASF AG
Inventor： MENGER VOLKMAR , ELLER KARSTEN , MEIER ANTON , HESSE MICHAEL
Abstract: A process for working up at least partially deactivated polymerization catalysts for the polymerization or copolymerization of THF which are contaminated with the products of the polymerization or copolymerization of THF comprises(a) in a first step, cleaning the polymerization catalyst by treatment with steam at from 80 to 250° C. and a pressure of from 0.5 to 40 bar and, preferably,(b) in a second step, regenerating the clean polymerization catalyst.
-
Patent Agency Ranking
公开(公告)号：AU2003233338A1
公开(公告)日：2003-12-12
申请号：AU2003233338
申请日：2003-05-19
Applicant: BASF AG
Inventor： MEIER ANTON , MENGER VOLKMAR , SIGWART CHRISTOPH
IPC: C07D307/08 , C07B61/00 , C08G65/20 , C08G65/30 , C08G65/322
Abstract: The invention provides a process for preparing polytetrahydrofuran, tetrahydrofuran copolymers, their monoesters or diesters and the monoesters or diesters of polytetrahydrofuran having a low color number in the presence of a catalyst, which comprises converting crude tetrahydrofuran which has been prepared in a manner per se into pure tetrahydrofuran by distillation, subsequently subjecting the latter to essentially complete hydrogenation and using the high-purity tetrahydrofuran obtained in this way for the polymerization directly after its preparation.
-
公开(公告)号：DE10223067A1
公开(公告)日：2003-12-11
申请号：DE10223067
申请日：2002-05-24
Applicant: BASF AG
Inventor： MEIER ANTON , MENGER VOLKMAR , SIGWART CHRISTOPH
IPC: C07D307/08 , C07B61/00 , C08G65/20 , C08G65/30 , C08G65/322 , C08G65/10 , C07D307/04
Abstract: The invention provides a process for preparing polytetrahydrofuran, tetrahydrofuran copolymers, their monoesters or diesters and the monoesters or diesters of polytetrahydrofuran having a low color number in the presence of a catalyst, which comprises converting crude tetrahydrofuran which has been prepared in a manner per se into pure tetrahydrofuran by distillation, subsequently subjecting the latter to essentially complete hydrogenation and using the high-purity tetrahydrofuran obtained in this way for the polymerization directly after its preparation.
-
公开(公告)号：DE10140949A1
公开(公告)日：2003-03-06
申请号：DE10140949
申请日：2001-08-21
Applicant: BASF AG
Inventor： CIPRIAN JUERGEN , BEER WULFRICH FRIEDEMANN , MENGER VOLKMAR
IPC: C08G65/20 , C08G65/26 , C08G65/30 , C08G65/331
Abstract: The invention relates to a method for producing polytetrahydrofurane comprising terminal OH groups (PTHF) on the basis of the corresponding polytetramethylene ether having terminal acyloxy groups by transesterification with alcohols in the presence of an alkali- or alkaline earth metal containing catalyst. According to the invention, the PTHF solution is guided through at least one ion exchanger to remove the alkali- or alkaline earth metal ions in the presence of a catalytic amount of water immediately after transesterifcation. The alkali- and alkaline earth metal ions are removed in a continuous ion exchange system that comprises the following elements: a plurality of ion exchange cells (Z) that are displaced on a rotating platform, comprising one distributor and one collection element each, a center valve (V) comprising one stator (S) and one rotor disk (R) via which all liquid flows into and from the ion exchanger system are fed and discharged, and feed and discharge conduits from every ion exchange cell (Z) to the center valve (V).
-
公开(公告)号：BR9508232A
公开(公告)日：1998-05-19
申请号：BR9508232
申请日：1995-07-04
Applicant: BASF AG
Inventor： IRGANG MATTHIAS , STOPS PETER , MIESEN ERNEST , MENGER VOLKMAR , GRAF FRITZ
Abstract: PCT No. PCT/EP95/02592 Sec. 371 Date Mar. 20, 1997 Sec. 102(e) Date Mar. 20, 1997 PCT Filed Jul. 4, 1995 PCT Pub. No. WO96/01242 PCT Pub. Date Jan. 18, 1996A process is disclosed for the selective hydrogenation of butynediol to 2-butene-1,4-diol using a palladium catalyst to which either copper and zinc, or silver and zinc, or copper, silver and zinc are added as doping agents. In the preferred embodiment, it has been possible, by optimizing the composition of the catalyst, to improve the activity and selectivity of the catalysts in question while also eliminating the need to handle toxic substances during the catalyst manufacturing process.
-
公开(公告)号：HUT76706A
公开(公告)日：1997-10-28
申请号：HU9700013
申请日：1995-07-04
Applicant: BASF AG
Inventor： GRAF FRITZ , IRGANG MATTHIAS , MENGER VOLKMAR , MIESEN ERNEST , STOPS PETER
Abstract: PCT No. PCT/EP95/02592 Sec. 371 Date Mar. 20, 1997 Sec. 102(e) Date Mar. 20, 1997 PCT Filed Jul. 4, 1995 PCT Pub. No. WO96/01242 PCT Pub. Date Jan. 18, 1996A process is disclosed for the selective hydrogenation of butynediol to 2-butene-1,4-diol using a palladium catalyst to which either copper and zinc, or silver and zinc, or copper, silver and zinc are added as doping agents. In the preferred embodiment, it has been possible, by optimizing the composition of the catalyst, to improve the activity and selectivity of the catalysts in question while also eliminating the need to handle toxic substances during the catalyst manufacturing process.
-
-
-
-
-
-
-
-
-
Search Results
43
records
(took 0.024 seconds)
