-
公开(公告)号：BRPI0311150B1
公开(公告)日：2015-10-13
申请号：BR0311150
申请日：2003-05-21
Applicant: BASF AG
Inventor： WARTINI ALEXANDER , HACKMANN CLAUS , DERNBACH MATTHIAS , SIRCH TILMAN
IPC: C08G65/26
Abstract: "processo para preparar polieteróis de alcoóis polivalentes, e, uso de um álcool polivalente". a invenção refere-se a um processo para preparar polióis de poliéster de alcoóis polivalentes por meio da mono- ou poliesterificação de pelo menos um ácido carboxílico contendo pelo menos dois grupos ácidos e/ou pelo menos um derivado de um ácido dicarboxílico com alcoóis polivalentes, opcionalmente com a adição de um catalisador, e por meio de separação da água de reação. referido processo é caracterizado pelo fato de que o álcool polivalente usado apresenta um teor de acetal de formaldeído inferior a 500 ppm.
-
公开(公告)号：BRPI0412987A
公开(公告)日：2006-10-03
申请号：BRPI0412987
申请日：2004-07-07
Applicant: BASF AG
Inventor： KOCH MICHAEL , WARTINI ALEXANDER , MAAS STEFFEN , SIRCH TILMAN , DERNBACH MATTHIAS
IPC: B01J21/06 , B01J23/46 , B01J35/00 , B01J35/10 , B01J37/06 , B01J37/14 , B01J37/18 , C07C29/88 , C07C29/38
Abstract: Removal of trialkylammonium formates (TAAF) from methylolalkanes obtained by condensation of formaldehyde with higher aldehydes involves decomposing the TAAF at elevated temperature on a titanium dioxide- supported ruthenium-containing catalyst in presence of a hydrogen-containing gas. An independent claim is also included for such a catalyst in which commercially-available titanium dioxide is treated before or after shaping to form the support with 0.1-30 wt.% of an acid in which the TiO 2 is difficultly soluble.
-
公开(公告)号：AT338740T
公开(公告)日：2006-09-15
申请号：AT02801897
申请日：2002-10-18
Applicant: BASF AG
Inventor： KOCH MICHAEL , WARTINI ALEXANDER , SIRCH TILMAN , DERNBACH MATTHIAS
Abstract: A method for removing trialkyl ammonium formate from a methylol alkanes obtained by condensation of formaldehyde with a higher aldehyde. The invention is characterized in that trialkyl ammonium formate is decomposed at a high temperature using catalysts containing at least one metal from groups 8-12 of the classification of elements in the presence of gas containing hydrogen. The method makes it possible to separate trialkyl ammonium formate according to the organic Cannizzaro method and according to the hydrogenation method.
-
公开(公告)号：ES2253699T3
公开(公告)日：2006-06-01
申请号：ES03755042
申请日：2003-05-21
Applicant: BASF AG
Inventor： WARTINI ALEXANDER , DERNBACH MATTHIAS , HACKMANN CLAUS , SIRCH TILMAN
Abstract: Procedimiento para la obtención de poliéteroles de alcoholes polivalentes, de la fórmula (I), en la que R1 y R2 significan, independientemente entre sí, hidrógeno, alquilo con 1 a 10 átomos de carbono, hidroxialquilo con 1 a 10 átomos de carbono, carboxilo o alcoxicarbonilo con 1 a 4 átomos de carbono, mediante reacción de un óxido de alquileno con el alcohol polivalente correspondiente en presencia de una base así como, en caso dado, en presencia de un disolvente, caracterizado porque el alcohol polivalente empleado ha sido obtenido mediante reacción de un aldehído de la fórmula (II) con formaldehído y a continuación transformación del grupo aldehído en un grupo hidroxi mediante hidrogenación catalítica y presenta un contenido en formaldehídoacetal por debajo de 500 ppm.
-
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.
-
Patent Agency Ranking
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.
-
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.
-
公开(公告)号：BR0114428A
公开(公告)日：2003-08-26
申请号：BR0114428
申请日：2001-10-11
Applicant: BASF AG
Inventor： DERNBACH MATTHIAS , SIGWART CHRISTOPH , HESSE MICHAEL , MAAS STEFFEN
Abstract: A process is provided for improving the color number of polyhydric alcohols, especially trimethylolpropane, by catalytic hydrogenation, the polyhydric alcohol used in the hydrogenation having been purified by distillation following its preparation, wherein the hydrogenation is carried out in the presence of a macroporous supported heterogeneous catalyst containing, as the active metal, at least one metal of subgroups VII to X of the Periodic Table.
-
公开(公告)号：BR0016759A
公开(公告)日：2002-09-24
申请号：BR0016759
申请日：2000-12-21
Applicant: BASF AG
Inventor： DERNBACH MATTHIAS , KRATZ DETLEF , STAMMER ACHIM , RUST HARALD , SCHULZ GERHARD
IPC: C07B61/00 , C07C29/80 , C07C31/22 , C07C29/141
Abstract: A process is disclosed for the purification, by distillation, of trimethylolpropane originating from the hydrogenation of 2,2-dimethylolbutanal, said process including the following steps:(a) reaction of n-butyraldehyde with formaldehyde in the presence of catalytic amounts of a tertiary amine, and hydrogenation of the resulting mixture to give a mixture containing trimethylolpropane;(b) separation of water, methanol, trialkylamine and/or trialkylammonium formate by distillation;(c) heating of the residue obtained in (b) under reduced pressure to a temperature at which TMP is volatile and compounds boiling above TMP are cleaved, in order to separate off, by distillation, TMP and compounds more volatile than TMP;(d) distillation of the distillate obtained in (c) in order to separate off the more volatile compounds and recover pure TMP; and(e) optional distillation of the TMP obtained in (d) in order to recover TMP with a low APHA color index.A process is also disclosed in which trialkylammonium formate is distilled under mild conditions from crude mixtures of polyhydric alcohols, predominantly trimethylolpropane.
-
公开(公告)号：DE10055181A1
公开(公告)日：2002-05-29
申请号：DE10055181
申请日：2000-11-08
Applicant: BASF AG
Inventor： WEIGL HAGEN , EBEL KLAUS , MAAS STEFFEN , SCHULZ GERHARD , DERNBACH MATTHIAS
IPC: C07C51/235 , C07C51/285 , C07C51/47 , C07C59/105 , C07C59/01
Abstract: The invention relates to a method for producing poly- or monomethylol alkanoic acids of general formula (I), R being the same or different and meaning a substituted or unsubstituted aliphatic hydrocarbon with 1 to 22 C-atoms or a methylol group; from the corresponding poly- or monomethylol alkanals of general formula (II), R having the meaning above, by oxidation with hydrogen peroxide. The poly- or monomethylol alkanal of general formula (II) used in the reaction has an overall content of metal ions of groups 3 to 14 of the periodic table of up to 5 ppm. The method is used especially for producing dimethylol allkanoic acids from the corresponding dimethylol alkanals, especially for producing dimethylol butanal or dimethylol propanal.
-
-
-
-
-
-
-
-
-
Search Results
114
records
(took 0.03 seconds)
