公开(公告)号：CZ20033512A3

公开(公告)日：2004-03-17

申请号：CZ20033512

申请日：2002-06-21

Applicant: BASF AG

Inventor： PROLL THEO ,  MACHHAMMER OTTO ,  SCHINDLER GOTZ-PETER ,  MULLER-ENGEL KLAUS JOACHIM

IPC: C07C45/34 ,  B01J27/199 ,  C07B61/00 ,  C07C45/33 ,  C07C45/35 ,  C07C47/22 ,  C07C51/235 ,  C07C57/055 ,  C07C253/26 ,  C07C255/08 ,  C07C45/37

Abstract: Partial oxidation products and/or ammoxidation products of an olefinic hydrocarbon A' are prepared by a process in which said olefinic hydrocarbon is produced during normal operation by partial dehydrogenation and/or oxydehydrogenation of hydrocarbon A and fed in from another source during partial or complete nonoperation of the dehydrogenation and/or oxydehydrogenation.

公开(公告)号：DE4124948C2

公开(公告)日：2002-08-01

申请号：DE4124948

申请日：1991-07-27

Applicant: BASF AG

Inventor： WEBERNDOERFER VOLKMAR ,  STUEBINGER ADOLF ,  PROLL THEO ,  BERNBACH JUERGEN

IPC: C08G69/48 ,  C08G73/02 ,  C08G73/04 ,  D21H17/55 ,  D21H21/10 ,  C08G85/00

公开(公告)号：CZ20000898A3

公开(公告)日：2000-06-14

申请号：CZ20000898

申请日：1998-09-10

Applicant: BASF AG

Inventor： ECK BERND ,  MACHHAMMER OTTO ,  PROLL THEO ,  SCHLIEPHAKE VOLKER ,  THIEL JOACHIM ,  BROELLOS KLAUS

IPC: B01D5/00 ,  C07C51/44 ,  C07C57/07

CPC classification number: B01D5/003 ,  C07C51/44 ,  C07C57/04

公开(公告)号：BR9710251A

公开(公告)日：1999-08-10

申请号：BR9710251

申请日：1997-07-09

Applicant: BASF AG

Inventor： ECK BERND ,  MACHHAMMER OTTO ,  PROLL THEO ,  SCHLIEPHAKE VOLKER ,  MULLER-ENGEL KLAUS JOACHIM

IPC: C07C57/04 ,  C07C51/21 ,  C07C51/43 ,  C07C57/05 ,  C07C57/07

Abstract: A process for preparing acrylic acid or methacrylic acid comprises(a) preparing a gaseous product mixture having essentially the composition of a reaction mixture of the catalytic gas phase oxidation of C3-/C4-alkanes, -alkenes, -alkanols and/or -alkanals and/or precursors thereof to form acrylic acid or methacrylic acid, characterized by(b) condensing said product mixture,(c) crystallizing acrylic acid or methacrylic acid from the solution obtained in step (b), and(d) removing the resulting crystals from the mother liquor.

公开(公告)号：CZ9900073A3

公开(公告)日：1999-05-12

申请号：CZ7399

申请日：1997-07-09

Applicant: BASF AG

Inventor： ECK BERND ,  MACHHAMMER OTTO ,  PROLL THEO ,  SCHLIEPHAKE VOLKER

IPC: C07C57/04 ,  C07C51/21 ,  C07C51/43 ,  C07C57/05 ,  C07C57/07

CPC classification number: C07C51/43 ,  C07C57/04

公开(公告)号：MX9701227A

公开(公告)日：1997-08-30

申请号：MX9701227

申请日：1997-02-18

Applicant: BASF AG

Inventor： MACHHAMMER OTTO ,  DAMS ALBRECHT ,  ECK BERND ,  PROLL THEO

IPC: C07C57/04 ,  C07C51/43 ,  C07C57/05 ,  C07C57/07

Abstract: El ácido acrílico o el ácido metacrílico se purifica mediante (a) sometiendo una mezcla que comprende el ácido acrílico o el ácido metacrílico a un proceso de separacion definido con precision, esencialmente en ausencia de un solvente orgánico, con la composicion de la fase en la cual se acumula el ácido acrílico o el ácido metacrílico permaneciendo esencialmente constante cuando cambia la composicion de las otras fases que participan en la transferencia de masa, extrayendo esta fase, y (b) sometiendo por lo menos una parte de la fase restante de la etapa (a) a un proceso de separacion definido con menor precision, y (c) alimentar una de las fases formadas en la etapa (b) al proceso de separacion definido con precision en la etapa (a). Además, la invencion proporciona un proceso para preparar ácido acrílico o ácido metacrílico que incluye el proceso de purificacion mencionado anteriormente.

公开(公告)号：CA2198142A1

公开(公告)日：1997-08-24

申请号：CA2198142

申请日：1997-02-20

Applicant: BASF AG

Inventor： ECK BERND ,  PROLL THEO ,  MACHHAMMER OTTO ,  DAMS ALBRECHT

IPC: C07C57/04 ,  C07C51/43 ,  C07C57/05 ,  C07C57/07 ,  C07C51/21

Abstract: Acrylic acid or methacrylic acid is purified by (a) subjecting a mixture comprising the acrylic acid or methacrylic acid to a sharply defined separation process essentially in the absence of an organic solvent, with the composition of the phase in which the acrylic acid or methacrylic acid accumulates remaining essentially constant when the composition of the other phases participating in the mass transfer changes, then taking off this phase and (b) subjecting at least a part of the remaining phase from stage(a) to a less sharply defined separation process and (c) feeding one of the phases formed in stage (b) to the sharply defined separation process in stage (a). In addition, the invention provides a process for preparing acrylic acid or methacrylic acid which includes the abovementioned purification process.

公开(公告)号：FI94432B

公开(公告)日：1995-05-31

申请号：FI911401

申请日：1991-03-22

Applicant: BASF AG

Inventor： HABERMANN WOLFGANG ,  BOCHNITSCHEK WERNER ,  FRITZMANN JOHANN ,  HAMMES PETER ,  PROLL THEO ,  WEISBRODT WALTER

IPC: C25B1/16 ,  B01D61/44 ,  B01D61/52 ,  C25B1/10 ,  C25B1/22 ,  C25B13/04 ,  C25B1/00 ,  C25B13/08

Abstract: A process is described for the electrochemical cleavage of alkali metal sulphates into relatively highly concentrated solutions of alkali metal hydroxide and sulphuric acid by means of the use of a 3-compartment electrodialysis cell at temperatures of >/= 70 to equipped with an anion exchanger membrane, the polymeric ion exchanger matrix of which is composed of a styrene/divinylbenzene copolymer, having very highly basic quaternary ammonium groups, and a hydronium ion blocker, on the side of which facing the central chamber is located an anion exchanger layer or anion exchanger membrane having tertiary or secondary amino groups.

公开(公告)号：FI911401A

公开(公告)日：1991-09-24

申请号：FI911401

申请日：1991-03-22

Applicant: BASF AG

Inventor： HABERMANN WOLFGANG ,  BOCHNITSCHEK WERNER ,  FRITZMANN JOHANN ,  HAMMES PETER ,  PROLL THEO ,  WEISBRODT WALTER

IPC: C25B1/16 ,  B01D61/44 ,  B01D61/52 ,  C25B1/10 ,  C25B1/22 ,  C25B13/04 ,  C25B

Abstract: A process is described for the electrochemical cleavage of alkali metal sulphates into relatively highly concentrated solutions of alkali metal hydroxide and sulphuric acid by means of the use of a 3-compartment electrodialysis cell at temperatures of >/= 70 to equipped with an anion exchanger membrane, the polymeric ion exchanger matrix of which is composed of a styrene/divinylbenzene copolymer, having very highly basic quaternary ammonium groups, and a hydronium ion blocker, on the side of which facing the central chamber is located an anion exchanger layer or anion exchanger membrane having tertiary or secondary amino groups.

公开(公告)号：FI911401A0

公开(公告)日：1991-03-22

申请号：FI911401

申请日：1991-03-22

Applicant: BASF AG

Inventor： HABERMANN WOLFGANG ,  BOCHNITSCHEK WERNER ,  FRITZMANN JOHANN ,  HAMMES PETER ,  PROLL THEO ,  WEISBRODT WALTER

IPC: C25B1/16 ,  B01D61/44 ,  B01D61/52 ,  C25B1/10 ,  C25B1/22 ,  C25B13/04 ,  C25B

Abstract: A process is described for the electrochemical cleavage of alkali metal sulphates into relatively highly concentrated solutions of alkali metal hydroxide and sulphuric acid by means of the use of a 3-compartment electrodialysis cell at temperatures of >/= 70 to equipped with an anion exchanger membrane, the polymeric ion exchanger matrix of which is composed of a styrene/divinylbenzene copolymer, having very highly basic quaternary ammonium groups, and a hydronium ion blocker, on the side of which facing the central chamber is located an anion exchanger layer or anion exchanger membrane having tertiary or secondary amino groups.