公开(公告)号：ES2104750T3

公开(公告)日：1997-10-16

申请号：ES92103413

申请日：1992-02-28

Applicant: BASF AG

Inventor： WEYER HANS-JURGEN DR ,  FISCHER ROLF DR ,  JESCHEK GERHARD DR ,  MULLER HERBERT DR

IPC: C08G65/08 ,  C08G2/32 ,  C08G65/02 ,  C08G65/16 ,  C08G65/20

公开(公告)号：DE59208766D1

公开(公告)日：1997-09-11

申请号：DE59208766

申请日：1992-02-28

Applicant: BASF AG

Inventor： WEYER HANS-JUERGEN DR ,  FISCHER ROLF DR ,  JESCHEK GERHARD DR ,  MUELLER HERBERT DR ,  MERGER FRANZ DR

IPC: C08G65/04 ,  C08G65/00 ,  C08G65/02 ,  C08G65/08 ,  C08G65/20

Abstract: A process for adjusting the mean molecular weight of polyoxyalkylene glycols and polyoxyalkylene glycol derivatives during the heteropolyacid-catalysed ring-opening polymerisation of cyclic ethers and/or acetals in the presence of proton-donating compounds, by regulating the amount of proton-donating compound in question in the reaction system as a function of time during the reaction by measuring the electrical conductivity.

公开(公告)号：DE19607955A1

公开(公告)日：1997-09-04

申请号：DE19607955

申请日：1996-03-01

Applicant: BASF AG

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

IPC: C07C29/149 ,  C07C31/20 ,  B01J23/89 ,  C07C29/74

Abstract: A process for the production of 1,6-hexanediol (I) from a carboxylic acid mixture (II) of adipic acid, 6-hydroxycaproic acid and small amounts of cyclohexan-1,4-diol(s) is obtained as by-product of the oxidation of cyclohexane to cyclohexanone/cyclohexanol with (gas containing) oxygen by extraction of the reaction mixture with water. The process involves esterification of the acids and hydrogenation. First, (a) the mono- and dicarboxylic acids in the aqueous (II) are esterified with a low molecular alcohol. This is followed by 2 distillation stages, in which (b) excess alcohol and low-boiling compounds are removed and (c) the sump is separated into an ester fraction free from cyclohexan-1,4-diol(s) and a fraction of (mainly) cyclohexan-1,4-diol(s). Then (d) the ester fraction is hydrogenated catalytically and (e) pure (I) is recovered from the hydrogenation product by distillation.

公开(公告)号：DE19607954A1

公开(公告)日：1997-09-04

申请号：DE19607954

申请日：1996-03-01

Applicant: BASF AG

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

IPC: C07C29/149 ,  C07C29/80 ,  C07C29/88 ,  C07C51/31 ,  C07D315/00 ,  C07D313/04 ,  C07D307/33 ,  C07D309/30

Abstract: A process for the production of 1,6-hexandiol (I) and iota -caprolactone (II) from a carboxylic acid mixture (III) of adipic acid, 6-hydroxycaproic acid and small amounts of cyclohexan-1,4-diol(s) is obtained as by-product of the oxidation of cyclohexane to cyclohexanone/cyclohexanol with (gas containing) oxygen by extraction of the reaction mixture with water. The process involves esterification, hydrogenation of a side stream to (I) and cyclisation of 6-hydroxycaproic ester to (II) by the following stages. First, (a) the mono- and dicarboxylic acids in the aqueous (III) are esterified with a low molecular alcohol. This is followed by 3 distillation stages, in which (b) excess alcohol and low-boiling compounds are removed, (c) the sump is separated into an ester fraction free from cyclohexan-1,4-diol(s) and a fraction of (mainly) cyclohexan-1,4-diol(s), and (d) a stream of (mainly) 6-hydroxycaproic ester is separated from the ester fraction. Then (e) the remaining ester fraction from (d) is hydrogenated catalytically and (I) is recovered from the hydrogenation product by distillation and (f) the 6-hydroxycaproic ester stream is heated to > 200 deg C at low pressure to cyclise the ester to (II), and pure (II) is recovered from the cyclisation product by distillation.

公开(公告)号：DE19532645A1

公开(公告)日：1997-03-06

申请号：DE19532645

申请日：1995-09-05

Applicant: BASF AG

Inventor： SIEGWART CHRISTOPH DR ,  HARTH KLAUS DR ,  FISCHER ROLF DR

IPC: B01J23/36 ,  B01J23/42 ,  B01J23/44 ,  B01J23/46 ,  B01J23/72 ,  B01J23/75 ,  B01J23/755 ,  B01J37/02 ,  B01J37/34 ,  C07B61/00 ,  C07D303/04 ,  C07D301/00 ,  C23C14/18 ,  C23C16/06 ,  B01J23/70 ,  B01J23/40 ,  C23C14/14

Abstract: Disclosed is method of producing 1,2-butylene oxide by the catalytic hydrogenation of vinyl oxirane over a heterogeneous catalyst obtained by precipitating one or more elements of groups 7 to 11 of the periodic table from the gas phase on to an inert, non-metallic support.

公开(公告)号：DE59304804D1

公开(公告)日：1997-01-30

申请号：DE59304804

申请日：1993-09-08

Applicant: BASF AG

Inventor： KUEKENHOEHNER THOMAS DR ,  GOETZ NORBERT DR ,  FISCHER ROLF DR ,  SCHNURR WERNER DR ,  BORCHERS DIRK DR

IPC: C07D307/32 ,  C07D307/33

Abstract: 3-(2'-Oxyethyl)dihydro-2(3H)furanones of the general formula I in which R denotes hydrogen or acetyl, are prepared by reaction of ethylene oxide with acetoacetic acid esters of the general formula II in which R denotes C1- to C4-alkyl, by carrying out the reaction in alcoholic solutions in the presence of alkali metal alkoxides at temperatures from 20 to 100 DEG C and pressures from 1 to 20 bar.

公开(公告)号：DE59304663D1

公开(公告)日：1997-01-16

申请号：DE59304663

申请日：1993-09-27

Applicant: BASF AG

Inventor： WEYER HANS-JUERGEN DR ,  FISCHER ROLF DR ,  SCHNURR WERNER DR ,  GOETZ NORBERT DR ,  KUEKENHOEHNER THOMAS DR

IPC: C07D309/06

公开(公告)号：DE19500236A1

公开(公告)日：1996-07-11

申请号：DE19500236

申请日：1995-01-05

Applicant: BASF AG

Inventor： DOSTALEK ROMAN DR ,  FISCHER ROLF DR ,  HARDER WOLFGANG DR ,  PAUL AXEL DR ,  PINKOS ROLF DR

IPC: C07C29/88 ,  C07C31/20 ,  C07C55/14 ,  C07C59/01 ,  C07C29/94 ,  C07C59/285 ,  C07C51/487

Abstract: A process for separating impurities from aqueous solutions of hexane diol-1,6 preliminary compounds like adipine and 6-hydroxy capronic acid, comprising the addition of at least one carboxylic acid to a solution (a) of hexane diol-1,6 and subjecting said solution (a) or a solution (b) containing carboxylic acid(s) as preliminary compounds of hexane diol-1,6 to a heat treatment at temperatures above room temperature in the absence of hydrogen.

公开(公告)号：DE4443704A1

公开(公告)日：1996-06-13

申请号：DE4443704

申请日：1994-12-08

Applicant: BASF AG

Inventor： SCHNURR WERNER DR ,  FISCHER ROLF DR ,  WULFF-DOERING JOACHIM DR ,  HESSE MICHAEL DR

IPC: B01J23/10 ,  B01J23/06 ,  C07B61/00 ,  C07C45/41 ,  C07C47/02 ,  C07C47/105 ,  C07C47/14 ,  C07C47/19 ,  C07C47/198 ,  C07C47/228 ,  C07C47/28 ,  C07C47/32 ,  C07C47/00 ,  C07B41/00

Abstract: Prodn. of aldehydes (I) comprises the gas phase hydrogenation of carboxylic acids or esters (II) at 200-450 degrees C under 0.1-20 bar in the presence of a catalyst having a catalytically active mass comprising 80-99.9 wt.% zirconium oxide and 0.1-20 wt.% lanthanide elements. R1-R4 = H; 1-6C alkyl; 3-6C cycloalkyl; aryl; 7-12C alkylphenyl; or 7-12C phenylalkyl; or R1+R3 = 1-4C alkoxy; OPh; NHMe; NMe2; or halo; or R = OH; or NH2.

公开(公告)号：DE4435920A1

公开(公告)日：1996-04-11

申请号：DE4435920

申请日：1994-10-07

Applicant: BASF AG

Inventor： WEYER HANS-JUERGEN DR ,  FISCHER ROLF DR ,  JESCHEK GERHARD DR ,  MUELLER HERBERT DR

IPC: C07C41/34 ,  C08G18/28 ,  C08G63/90 ,  C08G65/30 ,  C08G85/00 ,  C08J11/02

Abstract: A process is disclosed for extracting heteropolycompounds from mixtures that contain polymers, namely polyethers, polyesters and/or polyether esters, a protic component and heteropolycompounds. The process is characterised in that the protic component is removed from the mixture and the heteropolycompounds that settle as a separate phase are then extracted. The remaining polymer phase is preferably brought into contact with a solid adsorbent capable of adsorbing heteropolycompounds.