公开(公告)号：DE19911405A1

公开(公告)日：2000-09-21

申请号：DE19911405

申请日：1999-03-15

Applicant: BASF AG

Inventor： SUTORIS HEINZ FRIEDRICH ,  WAGENBLAST GERHARD ,  SCHLIEPHAKE VOLKER ,  SCHROEDER JUERGEN ,  KELLER HARALD

IPC: C07B63/04 ,  C07C51/50 ,  C07C67/62 ,  C09K15/32 ,  C09K15/30 ,  C07C69/54 ,  C07D279/20

Abstract: The invention relates to an inhibitor mixture which contains as its components at least one phenothiazine derivative and at least one chemical compound containing at least one phosphorus atom with the oxidation number +3. Further components such as phenol derivatives can also be contained in the inhibitor mixture. The inhibitor mixture is preferably used for stabilising radically polymerisable compounds.

公开(公告)号：BR9813106A

公开(公告)日：2000-08-15

申请号：BR9813106

申请日：1998-10-21

Applicant: BASF AG

Inventor： AICHINGER HEINRICH ,  HERBST HOLGER ,  NESTLER GERHARD ,  SCHROEDER JUERGEN

IPC: B08B3/08 ,  C07C67/03 ,  C07C67/04 ,  C07C67/08 ,  C07C67/48 ,  C07C69/54 ,  C11D7/06 ,  C11D11/00

Abstract: Plant parts which are used for the production or processing of (meth)acrylic esters are cleaned by(a) emptying the plant parts,(b) flushing the plant parts with aqueous 5 to 50% strength by weight alkali metal hydroxide solution,(c) removing the alkali metal hydroxide solution from the plant parts,(d) if required, washing the plant parts with water and(e) if required, drying the plant parts.

公开(公告)号：DE19838817A1

公开(公告)日：2000-03-02

申请号：DE19838817

申请日：1998-08-26

Applicant: BASF AG

Inventor： MACHHAMMER OTTO ,  HAUPT SUSANNE ,  SCHLIEPHAKE VOLKER ,  SCHROEDER JUERGEN

IPC: C07C51/42 ,  C07C57/05 ,  C07C57/07

公开(公告)号：DE19814375A1

公开(公告)日：1999-10-07

申请号：DE19814375

申请日：1998-03-31

Applicant: BASF AG

Inventor： NESTLER GERHARD ,  SCHROEDER JUERGEN ,  BOLZ GERHARD

IPC: C07C51/21 ,  C07C51/25 ,  C07C51/44 ,  C07C57/05 ,  C07C57/07 ,  C07C67/08 ,  C07C69/54 ,  C07C67/48 ,  C07C27/02

Abstract: The invention relates to a method for producing acrylic acid or acrylic acid esters, comprising step A and optionally, steps B and C as follows: A: cooling a gaseous reaction mixture formed during a gas phase oxidation process for producing acrylic acid and containing acrylic acid using an inert, high-boiling solvent, to produce a gaseous mixture containing acrylic acid; B: separating the gaseous mixture containing acrylic acid to produce a light-boiling fraction, a crude acrylic acid and a bottom product, and C: esterifying the crude acrylic acid obtained in step B using one or more alkanols to obtain an esterification mixture containing one or more acrylic acid esters and one or more acetic acid esters.

公开(公告)号：CA2256379A1

公开(公告)日：1998-06-18

申请号：CA2256379

申请日：1997-11-28

Applicant: BASF AG

Inventor： UHR HERMANN ,  MITULLA KONRAD ,  KESSEL KNUT ,  SCHROEDER JUERGEN ,  MERGER ROLAND ,  SUTORIS HEINZ FRIEDRICH

IPC: C07C7/20 ,  C07B63/04 ,  C07C15/46 ,  C07C67/62 ,  C08F2/40 ,  C08F4/00 ,  C07F15/02 ,  C07C51/50 ,  C07C57/075 ,  C07C69/15 ,  C07C69/54 ,  C07C231/22 ,  C07C233/03 ,  C07C253/32 ,  C07C255/08 ,  C07D201/18 ,  C07D207/267 ,  C07D223/10

Abstract: The invention concerns substance mixtures containing: (A) compounds containing vinyl groups; (B) an active amount of a mixture which inhibits premature polymerization of the compounds containing vinyl groups and contains: (i) at least one N-oxyl compound of a secondary amine which does not carry any hydrogen atoms on the .alpha.-carbon atoms; and (ii) at least one iron compound; (C) optionally nitro compounds; and (D) optionally co-stabilizers. The invention further concerns a process for inhibiting the premature polymerization of compounds (A) containing vinyl groups, and the use of mixture (B), optionally mixed with nitro compounds (C) and/or co-stabilizers (D), for inhibiting the premature polymerization of radically polymerizable compounds and for stabilizing organic materials against the harmful effect of radicals.

公开(公告)号：BG101908A

公开(公告)日：1998-05-29

申请号：BG10190897

申请日：1997-09-24

Applicant: BASF AG

Inventor： MERKELE HANS R ,  FRETSCHNER ERICH ,  SCHROEDER JUERGEN

IPC: C07D231/12 ,  C07D521/00

Abstract: A process is disclosed for preparing N-substituted pyrazoleshaving the general formulain which R1 stands for C1 to C12 alkyl or C7 to C20 phenylalkyl,and R2, R3, R4 represent independently from each other hydrogen,C1 to C12 alkyl, C7 to C20 phenylalkyl or optionally substitutedaryl residues, by reacting pyrazoles having the general formulain which R2, R3 and R4 have above-said meanings, with an alcoholhaving the general formulaR1-O-H, in which R1 has above-said meanings, at temperatures from50 to 400oC in the presence of a catalyst. The reaction ofpyrazole (II) with compound (III) is carried out in a molar ratiofrom 0.001:1 to 1: 1 in the liquid phase at a slight negativepressure up to an over pressure of 250 bars. Acids. their alkylesters and/or their anhydrides are used as catalysts in a molarratio from 0.0001: 1 to 0.5: 1 in relation to pyrazole (II).10 claims

公开(公告)号：FI120395B

公开(公告)日：2009-10-15

申请号：FI973592

申请日：1997-09-03

Applicant: BASF AG

Inventor： MERKLE HANS RUPERT ,  FRETSCHNER ERICH ,  SCHROEDER JUERGEN

IPC: C07D231/12 ,  C07D521/00

Abstract: PCT No. PCT/EP96/00790 Sec. 371 Date Aug. 20, 1997 Sec. 102(e) Date Aug. 20, 1997 PCT Filed Feb. 27, 1996 PCT Pub. No. WO96/27589 PCT Pub. Date Sep. 12, 1996A process for the preparation of an N-alkyl- or N-phenylalkyl-substituted pyrazole I by reacting the corresponding N-unsubstituted pyrazole II with an alcohol III of the formula R1-OH where R1 is the same alkyl or phenylalkyl group to be added to the unsubstituted nitrogen group -NH- of the pyrazole reactant. Both of the reactants, i.e. the pyrazole II and alcohol III compounds, are catalytically reacted in the liquid phase in a molar ratio of from 0.001:1 to 1:1, at temperatures of 50 DEG -400 DEG C. and under a subatmosheric pressure of from 0.8 bar up to a superatmospheric pressure of 250 bar. The catalyst required for this liquid phase reaction is selected as being at least one or more non-heterogeneous acid catalysts, their alkyl esters or their acid anhydrides.

公开(公告)号：ZA200601208B

公开(公告)日：2007-05-30

申请号：ZA200601208

申请日：2006-02-10

Applicant: BASF AG

Inventor： ULRICH HAMMON ,  JOACHIM MUELLER-ENGEL KLAUS ,  SCHROEDER JUERGEN ,  HANS MARTAN ,  BERND ECK ,  JOACHIM THIEL

IPC: B01D20090101 ,  B01D3/14 ,  B01D3/32 ,  C07C20090101 ,  C07C51/215 ,  C07C51/25 ,  C07C51/43 ,  C07C51/44

Abstract: A thermal separating process for removing a stream containing enriched (meth)acrylic monomers from a mixture containing (meth)acrylic monomers, in which the liquid phases retained in the separating space at high temperature and high (meth)acrylic monomer content are minimized.

公开(公告)号：AT346836T

公开(公告)日：2006-12-15

申请号：AT04726984

申请日：2004-04-13

Applicant: BASF AG

Inventor： DIEHL VOLKER ,  JAEGER ULRICH ,  HAMMON ULRICH ,  SCHROEDER JUERGEN ,  RISSEL STEFFEN

IPC: B01D3/32 ,  C07C51/44 ,  E04B1/00

Abstract: A separating column containing a sequence of mass transfer trays that are supported by at least one covered double-T support and/or covered U-shaped support.

公开(公告)号：AT335718T

公开(公告)日：2006-09-15

申请号：AT03808708

申请日：2003-10-06

Applicant: BASF AG

Inventor： THIEL JOACHIM ,  HAMMON ULRICH ,  BAUMANN DIETER ,  HEILEK JOERG ,  SCHROEDER JUERGEN ,  MUELLER-ENGEL KLAUS JOACHIM

IPC: C07C51/44 ,  C07C57/04

Abstract: In a process for preparing acrylic acid, an acrylic acid-containing product gas mixture obtained by catalytic gas phase partial oxidation of a C 3 precursor of acrylic acid, after direct cooling with a quench liquid, is fractionally condensed in a separating column provided with internals, rising into itself with sidestream takeoff of crude acrylic acid, and the acrylic acid oligomers which form are dissociated and the resulting dissociation gas is subjected to a countercurrent rectification before it is recycled.