公开(公告)号：CZ85197A3

公开(公告)日：1997-11-12

申请号：CZ85197

申请日：1995-09-21

Applicant: BASF AG

Inventor： BECKER RAINER DR ,  SIGWART CHRISTOPH DR ,  HESSE MICHAEL DR ,  FISCHER ROLF DR ,  ELLER KARSTEN DR ,  HEILEN GERD DR ,  PLITZKO KLAUS DIETER DR

IPC: B01J23/24 ,  C08G65/10 ,  C08G65/20 ,  C08G65/26 ,  C08G65/28

Abstract: PCT No. PCT/EP95/03651 Sec. 371 Date Mar. 10, 1997 Sec. 102(e) Date Mar. 10, 1997 PCT Filed Sep. 21, 1995 PCT Pub. No. WO96/09335 PCT Pub. Date Mar. 28, 1996A process for the preparation of polytetrahydrofuran or polytetrahydrofuran monoesters of C1-C10 monocarboxylic acids by the polymerization of tetrahydrofuran over a heterogeneous catalyst in the presence of one of the telogens water, 1,4-butanediol or polytetrahydrofuran having a molecular weight of from 200 to 700 dalton or a C1-C10 monocarboxylic acid or mixtures of these telogens, wherein a supported catalyst is used as catalyst, which contains a catalytically active amount of an oxygen-containing tungsten or molybdenum compound or mixtures of these compounds on an oxidic support material and which was calcined at temperatures ranging from 500 DEG to 1000 DEG C. following the application of the precursor compounds of said oxygen-containing molybdenum and/or tungsten compounds to the support material precursor.

公开(公告)号：DE19612985A1

公开(公告)日：1997-10-02

申请号：DE19612985

申请日：1996-04-01

Applicant: BASF AG

Inventor： STERZEL HANS-JOSEF DR ,  HESSE MICHAEL DR

IPC: B01J35/04 ,  B22F3/11 ,  C04B38/02 ,  B22F3/10

Abstract: Production of open-celled inorganic sintered foam products comprises: (a) converting a slip material made of sinterable inorganic powder, a vaporisable material, and a material forming a propellant gas, into a foamed product with release of the propellant gas; (b) treating the foamed product, which removes the flowability of the slip material forming an open-pored intermediate body, where steps (a) and (b) can run simultaneously; (c) removing any remaining fluid materials from the body forming a green foamed body; and (d) sintering to form the sintered foam product.

公开(公告)号：DE4429014A1

公开(公告)日：1996-02-22

申请号：DE4429014

申请日：1994-08-16

Applicant: BASF AG

Inventor： KOEHLER ULRICH DR ,  PAPE FRANK-FRIEDRICH DR ,  IRGANG MATTHIAS DR ,  WULFF-DOERING JOACHIM DR ,  HESSE MICHAEL DR ,  POLANEK PETER DR ,  GAA PETER

IPC: B01J23/40 ,  B01J23/42 ,  B01J23/58 ,  B01J23/63 ,  C07B61/00 ,  C07C209/16 ,  C07C209/68 ,  C07C209/72 ,  C07C211/45 ,  C07C211/47 ,  C07C211/35 ,  B01J23/44

Abstract: Prodn. of arylamines of formula (I) comprises (a) preparing a cycloalkylamine of formula (II) by the hydrogenative amination of a phenol (III) with NH3/H2 at 100-250 deg.C under 0.01-50 bar pressure in the presence of catalyst (A); and (b) dehydrogenation of (II) at 150-300 deg.C under 0.01-50 bar pressure in the presence of a catalyst (A). (A) comprises: 30-100 wt.% of a Pd component (A1) and 0-70 wt.% alkali- and/or alkaline earth oxide. (A1) comprises Pd (opt. mixed with Pt) on oxides of rare earth and/or Group IVb; or Pt/Pd mixts. on Al2O3. R1-R5 = H, 1-12C alkyl or 3-12C cycloalkyl. Step (b) is independently claimed.

公开(公告)号：DE4423346A1

公开(公告)日：1996-01-11

申请号：DE4423346

申请日：1994-07-04

Applicant: BASF AG

Inventor： REIF WOLFGANG DR ,  HESSE MICHAEL DR ,  ZIMMERMANN HORST DR ,  LINGK HEINZ

IPC: B01J23/72 ,  B01J23/76 ,  C07C209/48 ,  C07C209/60 ,  C07C211/09 ,  C07C211/00 ,  C07C209/00

Abstract: A catalyst (C) consisting of 85-100 wt.% copper oxide and zirconium oxide and 15-0 wt.% metal oxides of groups Ib to VIIb and VIII of the Periodic Table is new. Also claimed is the prepn. of amines by reaction of nitrile with ammonia, or prim. or sec. amine at 80-250 degrees C and 1-400 bar with hydrogen and a catalyst (C). Pref. prepn. of NR1R2-CH2R3 (I) comprises reaction of R3CN with NHR1R2. R1, R2 = H, 1-20C alkyl, 3-12C cycloalkyl, aryl, 7-20C aralkyl, 7-20C alkylaryl; R3 = 1-200C alkyl, 3-12C cycloalkyl, 1-20C alkyl (substd. with NH2, NHMe, NMe2 and/or OH), 2-30C alkoxyalkyl, (CH2-CHR5-O)nR4, aryl, 7-20C aralkyl or 7-20C alkylaryl; n = 2-30; R4 = H, 1-4C alkyl; R5 = H or Me.

公开(公告)号：DE58904537D1

公开(公告)日：1993-07-08

申请号：DE58904537

申请日：1989-03-03

Applicant: BASF AG

Inventor： HESSE MICHAEL DR ,  HOELDERICH WOLFGANG DR ,  DOCKNER TONI DR ,  KOEHLER HERMANN DR

IPC: B01J21/00 ,  B01J21/04 ,  B01J21/06 ,  B01J21/08 ,  B01J23/20 ,  B01J27/18 ,  B01J29/04 ,  C07B61/00 ,  C07D233/54 ,  C07D233/64

公开(公告)号：DE4105188A1

公开(公告)日：1991-08-29

申请号：DE4105188

申请日：1991-02-20

Applicant: BASF AG

Inventor： FETTING FRITZ PROF DR ,  DINGERDISSEN UWE DIPL ING ,  WITZEL OLIVER DIPL ING ,  HESSE MICHAEL DR

IPC: B01J29/70 ,  C07C209/16

Abstract: Dimethylamine (I) is produced by reaction of methanol or mixts. of methanol and dimethyl ether (DME) with excess ammonia at 250-450 deg.C and 0.01-50 bar in the presence of an acid zeolite catalyst (II); the novelty is that (II) is a siloxane-trated ZK-5 zeolite. (II) is produced, e.g, by reaction of a Cs/K-aluminosilicate (ZK-5) with ammonium salt, followed by pyrolysis of the NH4-ZK-5, treatment with a silanising agent (e.g, soln. of Si(OMe)4 in toluene) and pyrolysis to form a layer of SiO2; selectivity for (I)/MMA can be varied by varying the SiO2 layer thickness. USE/ADVANTAGE - Provides a selective process for the prodn. of (I), which is useful for the prodn. of solvents and pharmaceuticals; prior-art processes give mixts. of (I) with MeNH2 (MMA) and Me3N (TMA) which are difficult to separate by distn. due to the formation of complex azetropes.

公开(公告)号：DE3903622A1

公开(公告)日：1990-08-09

申请号：DE3903622

申请日：1989-02-08

Applicant: BASF AG

Inventor： HESSE MICHAEL DR ,  LERMER HELMUT DR ,  STECK WERNER DR ,  FISCHER ROMAN DR ,  MUELLER HERBERT DR ,  SCHARF EMIL DR

IPC: C07D487/08

公开(公告)号：DE3843389A1

公开(公告)日：1990-06-28

申请号：DE3843389

申请日：1988-12-23

Applicant: BASF AG

Inventor： HESSE MICHAEL DR ,  LERMER HELMUT DR ,  STECK WERNER DR ,  SCHAPER MICHAEL DR

IPC: C07D307/62

Abstract: Process for the preparation of ascorbic acid, of the formula I, which is characterised in that 2-keto-L-gulonic acid derivatives of the formula II in which R can denote H, alkyl or aryl, are reacted in the presence of zeolites as catalysts.