公开(公告)号：CA1331004C

公开(公告)日：1994-07-26

申请号：CA606131

申请日：1989-07-19

Applicant: BASF AG

Inventor： SCHOMMER CHARLES ,  EBEL KLAUS ,  DOCKNER TONI ,  IRGANG MATTHIAS ,  HOELDERICH WOLFGANG ,  RUST HARALD

IPC: B01J21/06 ,  B01J23/04 ,  C07B61/00 ,  C07C45/00 ,  C07C45/48 ,  C07C45/74 ,  C07C49/04 ,  C07C49/76 ,  C07C49/792 ,  C07C67/00 ,  C07D213/50 ,  C07C45/41

Abstract: Ketones of the general formula (I) (I) where R1 and R2 independently of one another are each alkyl, cycyloalkyl, arylalkyl, aryl or hetaryl, and one or more of the radicals R1 and R2 carry one or more hydrogen atoms on the .alpha.-carbon atom, are prepared by reacting two carboxylic acids of the general formulae (IIa/IIb), R1-COOH (IIa) and R2-COOH (IIb) or by reacting carbocylic acid R1-COOH (IIa) and a ketone (Ib) or by reacting a mixture of IIa, IIb and Ib, in the gas phase in the presence of a catalyst, by a process in which a catalyst is used whose active material contains at least 50% by weight of titanium dioxide having a specific surface area greater than 10 m2/g.O

公开(公告)号：DE4205471A1

公开(公告)日：1993-08-26

申请号：DE4205471

申请日：1992-02-22

Applicant: BASF AG

Inventor： GOSCH HANS-JUERGEN DR ,  RUST HARALD ,  FISCHER ROLF DR ,  HECHLER CLAUS DR ,  PINKOS ROLF DR

IPC: C07C29/80 ,  C07C29/82 ,  C07C31/20

Abstract: A process for isolating 1,4-butanediol from mixtures obtained by catalytic hydrogenation of maleic acid esters, fumaric acid esters and/or succinic acid esters, which in addition to 1,4-butanediol contain tetrahydrofuran, water, C1-C4-alcohols, succinic acid diesters, hydroxybutyric acid esters, succinic acid alkyl hydroxyalkyl esters, gamma-butyrolactone and butyric acid esters.

公开(公告)号：DE4103251A1

公开(公告)日：1991-08-14

申请号：DE4103251

申请日：1991-02-04

Applicant: BASF AG

Inventor： STECK WERNER DR ,  LERMER HELMUT DR ,  RUST HARALD ,  SIEGEL HARDO DR

IPC: C07C51/08 ,  C07C213/02 ,  C07C231/06 ,  C07C255/36

Abstract: 4-Hydroxyphenylacetonitrile (I) is produced by the gas-phase reaction of 4-methoxyphenylacetonitrile (II) at 280-4500 deg.C and 0.01-50 bar on zeolites or structurally-related Al-contg. phosphates (III) in the presence of water vapour. Pref. (III) is a pentasil, alumino, gallium- or borosilicate zeolite, a pentasil zeolite contg. at least 2 of the above elements as tetrahedral cations in the pentasil lattice, a zeolite of the faujasite or mordenite type, or a crystalline Al-contg. phosphate with a mol. sieve structure, obtd. by a hydrothermal process. USE/ADVANTAGE - Useful for the prodn. of 2-(4-hydroxyphenyl)-ethylamine, 4-hydroxyphenylacetic acid and 4-hydroxyphenylacetamide (claimed). Provides an improved process for heterogeneous catalytic hydrolysis of a phenol ether, without the disadvantages of prior-art homogeneous processes (e.g., laborious sepn. of catalyst, reduced yield due to further reaction of the prod. with the catalyst).

公开(公告)号：DE3815292A1

公开(公告)日：1989-11-16

申请号：DE3815292

申请日：1988-05-05

Applicant: BASF AG

Inventor： STECK WERNER DR ,  LERMER HELMUT DR ,  RUST HARALD ,  FRITZ GERHARD DR ,  SIEGEL HARDO DR

IPC: B01J29/86 ,  B01J29/40 ,  B01J29/88 ,  C07B61/00 ,  C07C45/00 ,  C07C45/65 ,  C07C45/67 ,  C07C47/565 ,  C07C67/00

Abstract: Hydroxybenzaldehydes of the formula (I) are prepared from a benzaldehyde of the formula (II) or its acetal, in which R1 in the R1O-phenyl ether group is an alkyl, cycloalkyl, alkylcycloalkyl or alkylaryl radical, R2 is H or OH or is identical to R1 and one or more R1O-phenyl ether groups are ortho, meta or para to the aldehyde function, by a process in which a benzaldehyde of the formula (II) or its acetal, in which R1 and R2 have the abovementioned meanings and one or more R1O-phenyl ether groups occupy the abovementioned position with respect to the aldehyde function, is converted into a hydroxybenzaldehyde of the formula (I) in the presence of water over a zeolite as a heterogeneous catalyst. The catalysts used are, in particular, zeolites of the pentasil type.

公开(公告)号：ES2261635T3

公开(公告)日：2006-11-16

申请号：ES02708262

申请日：2002-01-08

Applicant: BASF AG

Inventor： GALL MARTIN ,  KAIBEL GERD ,  KRUG THOMAS ,  RUST HARALD ,  STEIN FRANK

IPC: C07D309/30 ,  B01D3/14 ,  C07C29/80 ,  C07C31/20 ,  C07D315/00

Abstract: Procedimiento para la elaboración por destilación de productos crudos obtenidos en el procedimiento según la DE-A 196 07 954, que contienen 1, 6- hexanodiol (HDO), 1, 5-pentanodiol (PDO), o bien caprolactona (CLO), para la obtención de los correspondientes productos puros, caracterizado porque la elaboración por destilación se lleva a cabo respectivamente en una columna de pared separadora (TK), en la que está dispuesta una pared separadora (T) en el sentido longitudinal de la columna bajo formación de una zona de columna superior común (1), una zona de columna inferior común (6), una parte de alimentación (2, 4) con parte de enriquecimiento (2), y parte de descarga (4), así como una parte de extracción (3, 5) con parte de descarga (3) y parte de enriquecimiento (5), con alimentación del respectivo producto crudo HDO, PLO, o bien CLO en la zona media de la parte de alimentación (2, 4), descarga de una fracción de punto de ebullición elevado (C) a partir de la cola de la columna, una fracción de bajo punto de ebullición (A) por encima de la cabeza de la columna y una fracción de punto de ebullición medio (B) de la zona media de la parte de extracción (3, 5), o en columnas acopladas térmicamente.

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：DE50013032D1

公开(公告)日：2006-08-03

申请号：DE50013032

申请日：2000-10-05

Applicant: BASF AG

Inventor： KRATZ DETLEF ,  RUST HARALD ,  KROKOSZINSKI ROLAND ,  HELF VOLKER

IPC: C07C45/50 ,  C07C29/141 ,  C07C29/16 ,  C07C31/20 ,  C07C45/72

Abstract: Preparing at least 6C 1,3-diol comprises thermally treating a prepared at least 3C alkanal in the absence of basic catalysts, hydrating the obtained aldol addition product and recovering the product.

公开(公告)号：AT330926T

公开(公告)日：2006-07-15

申请号：AT00121800

申请日：2000-10-05

Applicant: BASF AG

Inventor： KRATZ DETLEF ,  RUST HARALD ,  KROKOSZINSKI ROLAND ,  HELF VOLKER

IPC: C07C29/141 ,  C07C29/16 ,  C07C31/20 ,  C07C45/50 ,  C07C45/72

Abstract: Preparing at least 6C 1,3-diol comprises thermally treating a prepared at least 3C alkanal in the absence of basic catalysts, hydrating the obtained aldol addition product and recovering the product.

公开(公告)号：CA2247991C

公开(公告)日：2006-06-27

申请号：CA2247991

申请日：1997-02-28

Applicant: BASF AG

Inventor： BREITSCHEIDEL BORIS ,  FISCHER ROLF ,  PINKOS ROLF ,  RUST HARALD ,  STEIN FRANK ,  BAUR KARL GERHARD

IPC: C07C31/20 ,  C07C29/149

Abstract: The invention relates to a process for the preparation of 1,6 hexane diol fr om a carboxylic acid mixture containing adipic acid, 6-hydroxy caproic acid and, in small quantities, 1,4 cyclohexane diols. Said mixture is obtained as a by-product of the oxidation of cyclohexane into cyclohexanone/ cyclohexanol by water extraction of the reaction mixture. Said process involves esterification of the acids and hydrogenation. According to this process (a) the monocarboxylic acids an d the dicarboxylic acids contained in the aqueous dicarboxylic acid mixture are reacted with a low-molecular alcohol to form the corresponding carboxylic acid esters; (b) the excess alcohol and low-boiling agents of the resultant esterification mixture are released in a first distillation stage; (c) separating into an ester fraction substantially free of 1,4 cyclohexane diols and a fraction containing at least the greater part of the 1,4 cyclohexane diols is carried out from the bottom product in a second distillation stage; (d) the ester fraction substantially free of 1,4 cyclohexane diols is catalytically hydrogenated; and (e) in a pure distillation stage 1,6 hexane diol is extracted from the hydrogenated discharge in a known manner.

公开(公告)号：MY121277A

公开(公告)日：2006-01-28

申请号：MYPI9702410

申请日：1997-05-31

Applicant: BASF AG

Inventor： KRAUSE ALFRED ,  RUST HARALD ,  SIEGEL HARDO ,  JULIUS MANFRED ,  WITZEL TOM ,  SIEGEL WOLFGANG

IPC: C07D211/58 ,  C07D211/56 ,  C07D221/20

Abstract: A PROCESS FOR PURIFYING CRUDE PIPERIDINES OF THE FORMULA I WHERE RL TO R4 ARE CI-C6-ALKYL, OR RL AND R2 AND/OR R3 AND R4 TOGETHER ARE A CH2-CHAIN OF 2 TO 5 CARBONS, WHICH COMPRISES, IN A FIRST STEP, REMOVING HIGH-BOILING SUBSTANCES AND, IF PRESENT, WATER FROM THE CRUDE PIPERIDINES BY DISTILLATION; IN A SECOND STEP, ADDING FROM 0.01 TO 5 % BY WEIGHT, BASED ON THE PRODUCT OF THE FIRST STEP, AS A REDUCING AGENT; AND, IN A THIRD STEP, ISOLATING THE PIPERIDINES BY DISTILLATION.