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公开(公告)号：DE50213448D1
公开(公告)日：2009-05-28
申请号：DE50213448
申请日：2002-04-22
Applicant: BASF SE
Inventor： RAHN RALF-THOMAS , WECK ALEXANDER , KAIBEL GERD
IPC: C07C51/573 , C07D307/60 , C07C51/215 , C07C51/44 , 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.
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公开(公告)号：AT431324T
公开(公告)日：2009-05-15
申请号：AT06807323
申请日：2006-10-16
Applicant: BASF SE
Inventor： HOFFER BRAM , VOSS HARTWIG , SCHWAB EKKEHARD , RHEUDE UDO , KAIBEL GERD , HAAKE MATHIAS , EBERHARDT JAN
IPC: C07C45/62 , C07C47/228
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公开(公告)号：AT426581T
公开(公告)日：2009-04-15
申请号：AT06793925
申请日：2006-09-29
Applicant: BASF SE
Inventor： J KEL CHRISTOPH , PACIELLO ROCCO , KASHANI-SHIRAZI NAWID , KAIBEL GERD
Abstract: The present invention relates to a method for fractionating stereoisomeric compounds which have at least one alcohol and/or amino group.
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公开(公告)号：AT501789T
公开(公告)日：2011-04-15
申请号：AT06100368
申请日：2006-01-16
Applicant: BASF SE
Inventor： STAECK BIANCA , KAIBEL GERD , POPLOW FRANK , ZEHNER PETER
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公开(公告)号：AT428681T
公开(公告)日：2009-05-15
申请号：AT02745251
申请日：2002-04-22
Applicant: BASF SE
Inventor： RAHN RALF-THOMAS , WECK ALEXANDER , KAIBEL GERD
IPC: C07C51/573 , C07D307/60 , C07C51/215 , C07C51/44 , 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.
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Patent Agency Ranking
公开(公告)号：DE502006003285D1
公开(公告)日：2009-05-07
申请号：DE502006003285
申请日：2006-09-29
Applicant: BASF SE
Inventor： JAEKEL CHRISTOPH , PACIELLO ROCCO , KASHANI-SHIRAZI NAWID , KAIBEL GERD
Abstract: The present invention relates to a method for fractionating stereoisomeric compounds which have at least one alcohol and/or amino group.
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公开(公告)号：AT423754T
公开(公告)日：2009-03-15
申请号：AT02764727
申请日：2002-07-18
Applicant: BASF SE
Inventor： BOETTCHER ARND , SCHWAB EKKEHARD , KAESTNER RALF , HENKELMANN JOCHEM , KAIBEL GERD , LAIB HEINRICH
Abstract: The present invention relates to a process for the hydrogenation of substituted or unsubstituted, monocyclic or polycyclicaromatics to form the corresponding cycloaliphatics, in particular of benzene to cyclohexane, by bringing the aromatic into contact with a hydrogen-containing gas in the presence of a catalyst, where hydrogen in which residual gases are present is used.
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公开(公告)号：NO20082131A
公开(公告)日：2008-06-26
申请号：NO20082131
申请日：2008-05-07
Applicant: BASF SE
Inventor： SCHWAB EKKEHARD , KAIBEL GERD , HOFFER BRAM WILLEM , NEUMANN DIRK , BUERKLE JOCHEN , BUTZ THOMAS
IPC: C10G2/00
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公开(公告)号：ES2296770T3
公开(公告)日：2008-05-01
申请号：ES01951476
申请日：2001-05-03
Applicant: BASF SE
Inventor： KAIBEL GERD , WECK ALEXANDER , RAHN RALF-THOMAS
IPC: C07D307/08 , B01D3/14 , B01D3/26 , C07C27/28 , C07C29/80 , C07C31/20 , C07D307/33
Abstract: Procedimiento para la separación por destilación, realizada continuamente, de mezclas que contienen tetrahidrofurano, gamma-butirolactona y/o 1, 4-butanodiol en al menos tres fracciones, caracterizado porque la separación se lleva a cabo en una disposición de columnas de destilación que contiene al menos una columna de pared separadora, o al menos una disposición de columnas de destilación convencionales acopladas térmicamente.
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公开(公告)号：CA2647083A1
公开(公告)日：2007-11-29
申请号：CA2647083
申请日：2007-05-16
Applicant: BASF SE
Inventor： WINDECKER GUNTHER , PINKOS ROLF , KAIBEL GERD , DAHLHOFF ELLEN , HEIMANN JENS
IPC: C07D307/34 , C07C51/64
Abstract: The present invention provides a process for preventing fumaric acid deposits in the preparation of maleic anhydride, comprising the following steps: a) absorption of a C4-dicarboxylic acid or of a derivative from a crude product mixture into an organic solvent or water as an absorbent, b) removal of the C4-dicarboxylic acid or of a derivative from the absorbent, the absorbent thus recovered being catalytically hydrogenated fully or partly and recycled fully or partly into the absorption stage (a).
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