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公开(公告)号：ES2250909T3
公开(公告)日：2006-04-16
申请号：ES03755043
申请日：2003-05-21
Applicant: BASF AG
Inventor： WARTINI ALEXANDER , DERNBACH MATTHIAS , TISCHER GERLINDE , SIRCH TILMAN
Abstract: Procedimiento para la obtención de poliésterpolioles de alcoholes polivalentes mediante esterificado simple o múltiple de al menos un ácido dicarboxílico y/o al menos un derivado de un ácido dicarboxílico con alcoholes polivalentes, y en caso dado bajo adición de un catalizador bajo separación del agua de reacción, caracterizado porque el alcohol polivalente empleado presenta un contenido en acetal de formaldehído por debajo de 500 ppm.
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公开(公告)号：DE102004033557A1
公开(公告)日：2006-02-16
申请号：DE102004033557
申请日：2004-07-09
Applicant: BASF AG
Inventor： HAUNERT ANDREA , PINKOS ROLF , KRUG THOMAS , SIRCH TILMAN , KOCH MICHAEL , TEBBEN GERD-DIETER
IPC: C07C29/136 , C07C31/20
Abstract: The present invention provides a process for preparing 1,6-hexanediol by hydrogenating dialkyl adipates, alkyl 6-hydroxycaproates, 1,4-cyclohexanedione and 4-hydroxycyclohexan-1-one as ester mixtures comprising impurities, by a) freeing resulting the esterification mixture of excess alcohol and low boilers in a first distillation stage (alcohol removal), b) carrying out a separation of the bottom product in a second distillation stage into an ester fraction substantially free of 1,4-cyclohexanediols and a fraction comprising at least the majority of the 1,4-cyclohexanediols, c) catalytically hydrogenating the ester fraction substantially free of 1,4-cyclohexanediols (ester hydrogenation) and d) in a purifying distillation stage, obtaining 1,6-hexanediol from the hydrogenation effluent in a manner known per se, which comprises selectively hydrogenating the ester mixture before stage a) and/or before stage b) (purifying hydrogenation).
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公开(公告)号：DE50301629D1
公开(公告)日：2005-12-15
申请号：DE50301629
申请日：2003-05-21
Applicant: BASF AG
Inventor： WARTINI ALEXANDER , DERNBACH MATTHIAS , TISCHER GERLINDE , SIRCH TILMAN
Abstract: The invention provides a process for preparing polyester polyols of polyhydric alcohols by mono- or polyesterification of at least one carboxylic acid having at least two acid groups and/or at least one derivative of a dicarboxylic acid with polyhydric alcohols, optionally with the addition of a catalyst, while removing the water of reaction, wherein the polyhydric alcohol used has a formaldehyde acetal content of less than 500 ppm.
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公开(公告)号：MXPA05000267A
公开(公告)日：2005-03-31
申请号：MXPA05000267
申请日：2003-07-18
Applicant: BASF AG
Inventor： SIRCH TILMAN
IPC: C07C29/10 , C07C29/141 , C07C29/88 , C07C45/75
Abstract: La invencion se refiere a un metodo para incrementar el rendimiento en la produccion de alcoholes polivalentes, especialmente trimetilolpropano, obtenidos por medio de condensacion de formaldehido con un aldehido superior. De acuerdo con el metodo de la invencion, el tratamiento con acido se lleva cabo en una mezcla (fraccion de punto de ebullicion alto) que se obtiene por reprocesamiento, contiene derivados de dichos alcoholes y tiene un punto de ebullicion mas alto que e) alcohol respectivo, y el alcohol polivalente es recuperado a partir de la fraccion de punto de ebullicion alto tratada con acido. El metodo de la invencion esta caracterizado en que e) contenido de agua de la fraccion de alto punto de ebullicion suma entre 20 y 90% en relacion a la mezcla completa de la fraccion de punto de ebullicion alto y agua.
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公开(公告)号：BR0117175A
公开(公告)日：2004-10-26
申请号：BR0117175
申请日：2001-11-15
Applicant: BASF AG
Inventor： WARTINI ALEXANDER , SIRCH TILMAN , DERNBACH MATTHIAS , MELDER JOHANN-PETER
Abstract: The invention relates to a method for removing acetals containing formaldehyde from polyvalent alcohols, especially trimethylolpropane. The inventive method is characterised in that the polyvalent alcohol is liberated of low-boiling constituents after it has been produced by distillation, is then subjected to tempering and is repurified, preferably by means of distillation.
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Patent Agency Ranking
公开(公告)号：CA2508727A1
公开(公告)日：2004-07-01
申请号：CA2508727
申请日：2003-12-03
Applicant: BASF AG
Inventor： KRUG THOMAS , HAUNERT ANDREA , FISCHER ROLF-HARTMUTH , ROEPER MICHAEL , STUER WOLFRAM , SIRCH TILMAN
IPC: C07C29/17 , C07C29/149 , C07C31/20 , C07C67/347 , C07C69/593
Abstract: The invention relates to a method for producing 1,6-hexanediol having a puri ty of > 99.5 wt. % by catalytic dimerisation of acrylic acid esters, catalyt ic hydrogenation of the thus obtained hexene diacidic diester in order to form 1.6-hexanediol. Said method consists in: a) dimerising C1- C8-acrylic acid esters in the presence of at least one rhodium compound in order to form mixtures predominantly of 2- and 3-hexene diacdic diesters, b) hydrating the obtained dimerisation discharge in the presence of chrome-free catalysts containing mainly copper as a hydrogenation component and c) purifying the thus obtained raw 1.6-hexanediol by fractionating distillation.
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公开(公告)号：DE10258318A1
公开(公告)日：2004-06-24
申请号：DE10258318
申请日：2002-12-13
Applicant: BASF AG
Inventor： MODI ANDREA , FISCHER ROLF-HARTMUTH , KRUG THOMAS , SIRCH TILMAN
IPC: B01J23/889 , C07C29/141 , C07C29/149 , C07C31/20 , C07C67/283
Abstract: Production of 1,6-hexanediol of purity at least 99 % comprises hydroformylating 3-, 4- or 2-pentenoic acid alkyl ester with carbon monoxide and hydrogen in presence of rhodium compounds and tertiary organic polyphosphites, hydrogenating in chromium-free mainly copper-containing catalysts; and purifying the resulting diol mixture by fractional distillation. Production of 1,6-hexanediol of purity at least 99 % comprises: (1) hydroformylating 3-, 4- or 2-pentenoic acid alkyl ester with carbon monoxide and hydrogen in presence of rhodium compounds and tertiary organic polyphosphites to a mixture mainly of 5-, 4- and 3-formylvaleric acid esters; (2) hydrogenating the ester mixture in chromium-free mainly copper-containing catalysts; and (3) purifying the resulting diol mixture by fractional distillation.
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公开(公告)号：DE502005001845D1
公开(公告)日：2007-12-13
申请号：DE502005001845
申请日：2005-07-07
Applicant: BASF AG
Inventor： HAUNERT ANDREA , PINKOS ROLF , KRUG THOMAS , SIRCH TILMAN , KOCH MICHAEL , TEBBEN GERD-DIETER
IPC: C07C29/145 , C07C29/149 , C07C31/20
Abstract: The present invention provides a process for preparing 1,6-hexanediol by hydrogenating dialkyl adipates, alkyl 6-hydroxycaproates, 1,4-cyclohexanedione and 4-hydroxycyclohexan-1-one as ester mixtures comprising impurities, by a) freeing resulting the esterification mixture of excess alcohol and low boilers in a first distillation stage (alcohol removal), b) carrying out a separation of the bottom product in a second distillation stage into an ester fraction substantially free of 1,4-cyclohexanediols and a fraction comprising at least the majority of the 1,4-cyclohexanediols, c) catalytically hydrogenating the ester fraction substantially free of 1,4-cyclohexanediols (ester hydrogenation) and d) in a purifying distillation stage, obtaining 1,6-hexanediol from the hydrogenation effluent in a manner known per se, which comprises selectively hydrogenating the ester mixture before stage a) and/or before stage b) (purifying hydrogenation).
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公开(公告)号：DE102006009839A1
公开(公告)日：2007-09-06
申请号：DE102006009839
申请日：2006-03-01
Applicant: BASF AG
Inventor： MAAS STEFFEN , JOHANN THORSTEN , STEINIGER MICHAEL , SIRCH TILMAN , SCHLITTER STEPHAN , RITTINGER STEFAN
IPC: C07C29/141 , B01J23/72 , C07C31/18 , C07C31/20
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公开(公告)号：DE102006009838A1
公开(公告)日：2007-09-06
申请号：DE102006009838
申请日：2006-03-01
Applicant: BASF AG
Inventor： MAAS STEFFEN , JOHANN THORSTEN , KOCH MICHAEL , SIRCH TILMAN , SCHLITTER STEPHAN , RITTINGER STEFAN , STEINIGER MICHAEL
IPC: C07C29/141 , B01J23/72 , C07C31/18 , C07C31/20
Abstract: A process for catalytically hydrogenating methylolalkanals of the general formula in which R1 and R2 are each independently a further methylol group or an alkyl group having from 1 to 22 carbon atoms or an aryl or aralkyl group having from 6 to 33 carbon atoms, in the liquid phase over a hydrogenation catalyst, which comprises setting a pH of from 7.0 to 9.0 in the hydrogenation effluent by adding at least one tertiary amine, an inorganic base or an inorganic or organic acid to the hydrogenation feed.
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