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公开(公告)号：DE502006004991D1
公开(公告)日：2009-11-12
申请号：DE502006004991
申请日：2006-07-11
Applicant: BASF SE
Inventor： BODE ANDREAS , RACHWALSKY UWE , SAUER FRIEDRICH , SCHAUSS ECKARD , VOLLAND MARCO-CHRISTIAN , WETTLING THOMAS
Abstract: The present invention relates to a process for preparing polyisobutenes by polymerizing isobutene in the presence of a Lewis acid catalyst in liquid organic phase, terminating the reaction by admixing the organic phase with an aqueous terminator in a dynamic mixer which has a rotationally symmetric mixing chamber formed from one circumferential wall and two end walls, and a mixing rotor driven such that it rotates therein, the organic phase being introduced through a first inlet orifice provided in the circumferential wall and the aqueous terminator via a second inlet orifice provided in the circumferential wall, and removing a finely dispersed mixture of the organic phase and of the terminator through an outlet orifice provided in the circumferential wall and feeding it to a phase separation. The process serves to prepare high-reactivity polyisobutenes and/or polyisobutenes with narrow molecular weight distribution.
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公开(公告)号：AT439339T
公开(公告)日：2009-08-15
申请号：AT01907445
申请日：2001-01-12
Applicant: BASF SE
Inventor： AUER HEINZ , BESSLING BERND , HAMMER HANS , HASSE HANS , SAUER FRIEDRICH , VICARI MAXIMILIAN , ADRIAN TILL
Abstract: The invention relates to a process for obtaining anhydrous or substantially anhydrous formic acid, in which firstly aqueous formic acid is prepared by hydrolysis of methyl formate and is freed from water in the subsequent work-up. The process has the special feature that steam, which is employed for the hydrolysis of methyl formate and for heating a distillation column serving for work-up, is also used as stripping steam for waste-water stripping. The stripped waste water is produced during work-up.
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公开(公告)号：DE50115031D1
公开(公告)日：2009-09-24
申请号：DE50115031
申请日：2001-01-12
Applicant: BASF SE
Inventor： AUER HEINZ , BESSLING BERND , HAMMER HANS , HASSE HANS , SAUER FRIEDRICH , VICARI MAXIMILIAN , ADRIAN TILL
Abstract: The invention relates to a process for obtaining anhydrous or substantially anhydrous formic acid, in which firstly aqueous formic acid is prepared by hydrolysis of methyl formate and is freed from water in the subsequent work-up. The process has the special feature that steam, which is employed for the hydrolysis of methyl formate and for heating a distillation column serving for work-up, is also used as stripping steam for waste-water stripping. The stripped waste water is produced during work-up.
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公开(公告)号：DE50113988D1
公开(公告)日：2008-07-03
申请号：DE50113988
申请日：2001-01-24
Applicant: BASF SE
Inventor： AUER HEINZ , BESSLING BERND , HAMMER HANS , HASSE HANS , SAUER FRIEDRICH , VICARI MAXIMILIAN , WAGNER GERHARD , ADRIAN TILL
Abstract: The invention relates to a process for obtaining anhydrous or substantially anhydrous formic acid in which, during the work-up, a compound of the general formula Iwhere the radicals R1 and R2 are alkyl, cycloalkyl, aryl or aralkyl groups, or R1 and R2 jointly, together with the N atom, form a heterocyclic 5- or 6-membered ring, and only one of the radicals is an aryl group, and where R3 is hydrogen or a C1-C4-alkyl group,is employed simultaneously as extractant for formic acid and as antifoam for a distillation process.
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Patent Agency Ranking
公开(公告)号：DE50114365D1
公开(公告)日：2008-11-13
申请号：DE50114365
申请日：2001-01-26
Applicant: BASF SE
Inventor： SCHWAHN HARALD , BORCHERT GERHARD , DIEHL KLAUS , GRENACHER ARMIN VOLKER , SAUER FRIEDRICH
IPC: C07C45/50 , B01D17/025 , C07C45/80
Abstract: A process for the hydroformylation of olefins having from 20 to 400 carbon atoms by reaction of the olefins with synthesis gas in the presence of a cobalt carbonyl catalyst and recovery of the cobalt catalyst by extraction of the reaction product with an aqueous acidic solution in the presence of oxygen and separation of the organic and aqueous phases, wherein (a) the aqueous phase is separated from the organic phase by means of gravitational forces to the extent that the proportion of aqueous phase dispersed in the organic phase is 2% by weight or less, based on the organic phase, and (b) the organic phase obtained in step (a) is exposed to an electric field to coalesce the remaining dispersed aqueous phase, is described.In this way, the residual cobalt content of the hydroformylation product can be reduced to less than 1 ppm.
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公开(公告)号：AT396167T
公开(公告)日：2008-06-15
申请号：AT01946840
申请日：2001-01-24
Applicant: BASF SE
Inventor： AUER HEINZ , BESSLING BERND , HAMMER HANS , HASSE HANS , SAUER FRIEDRICH , VICARI MAXIMILIAN , WAGNER GERHARD , ADRIAN TILL
Abstract: The invention relates to a process for obtaining anhydrous or substantially anhydrous formic acid in which, during the work-up, a compound of the general formula Iwhere the radicals R1 and R2 are alkyl, cycloalkyl, aryl or aralkyl groups, or R1 and R2 jointly, together with the N atom, form a heterocyclic 5- or 6-membered ring, and only one of the radicals is an aryl group, and where R3 is hydrogen or a C1-C4-alkyl group,is employed simultaneously as extractant for formic acid and as antifoam for a distillation process.
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公开(公告)号：AT444314T
公开(公告)日：2009-10-15
申请号：AT06762534
申请日：2006-07-11
Applicant: BASF SE
Inventor： BODE ANDREAS , RACHWALSKY UWE , SAUER FRIEDRICH , SCHAUSS ECKARD , VOLLAND MARCO-CHRISTIAN , WETTLING THOMAS
Abstract: The present invention relates to a process for preparing polyisobutenes by polymerizing isobutene in the presence of a Lewis acid catalyst in liquid organic phase, terminating the reaction by admixing the organic phase with an aqueous terminator in a dynamic mixer which has a rotationally symmetric mixing chamber formed from one circumferential wall and two end walls, and a mixing rotor driven such that it rotates therein, the organic phase being introduced through a first inlet orifice provided in the circumferential wall and the aqueous terminator via a second inlet orifice provided in the circumferential wall, and removing a finely dispersed mixture of the organic phase and of the terminator through an outlet orifice provided in the circumferential wall and feeding it to a phase separation. The process serves to prepare high-reactivity polyisobutenes and/or polyisobutenes with narrow molecular weight distribution.
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公开(公告)号：ES2311510T3
公开(公告)日：2009-02-16
申请号：ES01915166
申请日：2001-01-26
Applicant: BASF SE
Inventor： SCHWAHN HARALD , BORCHERT GERHARD , DIEHL KLAUS , GRENACHER ARMIN VOLKER , SAUER FRIEDRICH
IPC: C07C45/50 , B01D17/025 , C07C45/80
Abstract: Procedimiento para la hidroformilación de olefinas con 20 hasta 400 átomos de carbono mediante reacción de la olefina con gas de síntesis en presencia de un catalizador de carbonilo de cobalto y recuperación del catalizador de cobalto mediante extracción de la descarga de la reacción con una solución acuosa ácida, en presencia de oxígeno y separación de las fases orgánica y acuosa, caracterizado porque (a) se separa la fase acuosa mediante una combinación de (i) la sedimentación y/o la centrifugación, y (ii) una o varias etapas mecánicas de coalescencia, de la fase orgánica de tal manera que la proporción de la fase acuosa, dispersada en la fase orgánica, sea de un 0,5% en peso o menor, referido a la fase orgánica; y (b) se somete a la fase orgánica, obtenida en la etapa (a), a un campo eléctrico para la coalescencia de la fase acuosa residual, dispersada.
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公开(公告)号：AT409682T
公开(公告)日：2008-10-15
申请号：AT01915166
申请日：2001-01-26
Applicant: BASF SE
Inventor： SCHWAHN HARALD , BORCHERT GERHARD , DIEHL KLAUS , GRENACHER ARMIN , SAUER FRIEDRICH
IPC: C07C45/50 , B01D17/025 , C07C45/80
Abstract: A process for the hydroformylation of olefins having from 20 to 400 carbon atoms by reaction of the olefins with synthesis gas in the presence of a cobalt carbonyl catalyst and recovery of the cobalt catalyst by extraction of the reaction product with an aqueous acidic solution in the presence of oxygen and separation of the organic and aqueous phases, wherein (a) the aqueous phase is separated from the organic phase by means of gravitational forces to the extent that the proportion of aqueous phase dispersed in the organic phase is 2% by weight or less, based on the organic phase, and (b) the organic phase obtained in step (a) is exposed to an electric field to coalesce the remaining dispersed aqueous phase, is described.In this way, the residual cobalt content of the hydroformylation product can be reduced to less than 1 ppm.
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