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

IPC: C07C29/80 ,  C07C29/76 ,  C07C31/22

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

IPC: B01J23/44 ,  C07C29/90 ,  C07C31/22

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.

公开(公告)号：FR2756281A1

公开(公告)日：1998-05-29

申请号：FR9714616

申请日：1997-11-21

Applicant: BASF AG

Inventor： LAQUA GERHARD ,  DERNBACH MATTHIAS

IPC: C07C273/02 ,  C07C273/18 ,  C07C275/28 ,  C07C275/58 ,  C07C275/14

Abstract: Process for cleaning (poly)isocyanurates at 80-350 deg C and elevated pressure, optionally in the presence of a catalyst comprises reacting the isocyanurates with primary and/or secondary amines and/or NH3 and/or substances which split. The NH3 under reaction conditions, as NH functional substances with water has a content of

公开(公告)号：DE50014147D1

公开(公告)日：2007-04-19

申请号：DE50014147

申请日：2000-12-27

Applicant: BASF AG

Inventor： DERNBACH MATTHIAS ,  KRATZ DETLEF ,  STAMMER ACHIM ,  SCHULZ GERHARD

IPC: C07C45/80 ,  C07B61/00 ,  C07C29/14 ,  C07C31/22 ,  C07C45/75 ,  C07C45/82 ,  C07C45/83 ,  C07C45/86 ,  C07C47/058 ,  C07C47/19

Abstract: Formaldehyde is removed by distillation from reaction solutions containing a methlolated alkanal which was obtained from the reaction of formaldehyde with an alkanal which has at least one acidic hydrogen atom alpha to the carbonyl function or from the reaction of a 2-alkylacrolein or acrolein with water and formaldehyde, by a process in which this reaction was carried out in the presence of catalytic amounts of organic amine. The process permits the improved removal of formaldehyde from the reaction mixture and furthermore facilitates the hydrogenation of the alkanals thus obtained to give polyols.

公开(公告)号：DE50013064D1

公开(公告)日：2006-08-03

申请号：DE50013064

申请日：2000-12-21

Applicant: BASF AG

Inventor： DERNBACH MATTHIAS ,  KRATZ DETLEF ,  STAMMER ACHIM ,  RUST HARALD ,  SCHULZ GERHARD

IPC: C07C29/80 ,  C07B61/00 ,  C07C29/141 ,  C07C31/22

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：ES2255579T3

公开(公告)日：2006-07-01

申请号：ES01986668

申请日：2001-10-11

Applicant: BASF AG

Inventor： DERNBACH MATTHIAS ,  SIGWART CHRISTOPH ,  HESSE MICHAEL ,  MAAS STEFFEN

IPC: B01J23/44 ,  C07C29/90 ,  C07C31/22

Abstract: Procedimiento para la mejora del índice de color de alcoholes polivalentes mediante hidrogenado catalítico, empleándose en el hidrogenado se empleó un alcohol polivalente, purificándose éste mediante destilación tras su obtención, caracterizado porque se hidrogena en presencia de un catalizador heterogéneo macroporoso, soportado, que contiene como metal activo al menos un metal del grupo secundario VII a X del Sistema Periódico.

公开(公告)号：DE50108700D1

公开(公告)日：2006-04-06

申请号：DE50108700

申请日：2001-10-11

Applicant: BASF AG

Inventor： DERNBACH MATTHIAS ,  SIGWART CHRISTOPH ,  HESSE MICHAEL ,  MAAS STEFFEN

IPC: B01J23/44 ,  C07C29/90 ,  C07C31/22

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：BR0312954A

公开(公告)日：2005-06-14

申请号：BR0312954

申请日：2003-07-18

Applicant: BASF AG

Inventor： WARTINI ALEXANDER ,  SIRCH TILMAN ,  MELDER JOHANN-PETER ,  DERNBACH MATTHIAS

IPC: C07C29/10 ,  C07C29/141 ,  C07C29/88 ,  C07C45/75

Abstract: The invention relates to a method for increasing yield in the production of polyvalent alcohols, especially trimethylolpropane, obtained by condensing formaldehyde with a higher aldehyde. According to the inventive method, acid treatment is carried out on a mixture (high-boiling fraction) that is obtained by reprocessing, contains derivatives of said alcohols and has a higher boiling point than the respective alcohol, and the polyvalent alcohol is recovered from the acid-treated high-boiling fraction. The inventive method is characterised in that the water content of the high-boiling fraction amounts to between 20 and 90 wt. % in relation to the entire mixture of the high-boiling fraction and water.