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.

公开(公告)号：ES2223637T3

公开(公告)日：2005-03-01

申请号：ES00987467

申请日：2000-12-28

Applicant: BASF AG

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

IPC: C07C29/88 ,  C07C29/141 ,  C07C29/80 ,  C07C31/22

Abstract: Procedimiento para aumentar el rendimiento en la obtención de alcoholes polivalentes obtenidos por hidrogenación a partir de alcanales metilolados, por descomposición de los derivados de éstos alcoholes, añadiéndose a una mezcla, que contiene éstos derivados, desde 5 ppm hasta un 1 % en peso de ácidos adecuados, la mezcla se calienta a temperaturas desde 150 hasta 280ºC y, a continuación, se separa por destilación el alcohol polivalente.

公开(公告)号：DE10237746A1

公开(公告)日：2004-03-11

申请号：DE10237746

申请日：2002-08-17

Applicant: BASF AG

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

IPC: C07C45/82 ,  C07C45/83 ,  C07C29/80 ,  C07B63/00 ,  C07C29/141 ,  C07C47/22

公开(公告)号：DE10234016A1

公开(公告)日：2004-02-05

申请号：DE10234016

申请日：2002-07-26

Applicant: BASF AG

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

IPC: C07C29/10 ,  C07C29/141 ,  C07C29/88 ,  C07C45/75 ,  C07C29/132 ,  C07C31/18 ,  C07C29/74 ,  C07C45/72

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.

公开(公告)号：DE10223055A1

公开(公告)日：2003-12-11

申请号：DE10223055

申请日：2002-05-24

Applicant: BASF AG

Inventor： WARTINI ALEXANDER ,  DERNBACH MATTHIAS ,  TISCHER GERLINDE ,  SIRCH TILMAN

IPC: C07C29/80 ,  C08G6/00 ,  C08G18/42 ,  C08G63/12 ,  C08G63/78 ,  C07C41/03 ,  C07C43/13 ,  C07C51/367 ,  C07C67/31 ,  C07B41/04

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.