公开(公告)号：DE59405738D1

公开(公告)日：1998-05-28

申请号：DE59405738

申请日：1994-01-07

Applicant: BASF AG

Inventor： PFAB PETER DR ,  WAHL PETER DR ,  FRANZ DIETER DR

IPC: C07D207/32 ,  C07D207/323

Abstract: Process for the purification of crude pyrroles obtained in the preparation of pyrroles of the general formula I in which R is hydrogen or a C1-C6-alkyl radical, characterised in that the mixture which contains the crude pyrrole is treated with an acid or an activated carboxylic acid derivative and the pyrrole is removed from the mixture by distillation at reduced pressure and a bottom temperature of up to 160@C.

公开(公告)号：MY140569A

公开(公告)日：2009-12-31

申请号：MYPI20054872

申请日：2005-10-17

Applicant: BASF AG

Inventor： DECKERT PETRA DR ,  BABLER PETER DR ,  BARTSCH MICHAEL DR ,  HADERLEIN GERD DR ,  LUYKEN HERMANN ,  SCHEIDEL JENS DR ,  PFAB PETER DR ,  AECHTNER TOBIAS DR ,  SIEGEL WOLFGANG DR

IPC: B01J31/40

Abstract: A PROCESS FOR EXTRACTIVELY REMOVING HOMOGENEOUSLY DISSOLVED CATALYSTS FROM A REACTION EFFLUENT OF A HYDROCYANATION OF UNSATURATED MONONITRILES TO DINITRILES, BY EXTRACTION BY MEANS OF A HYDROCARBON H, WHICH COMPRISES A) ADDING A NONPOLAR APROTIC LIQUID L TO THE REACTION EFFLUENT TO OBTAIN A STREAM I, AND B) EXTRACTING THE STREAM I AT A TEMPERATURE T WITH THE HYDROCARBON H TO OBTAIN A STREAM II COMPRISING THE HYDROCARBON H ENRICHED WITH THE CATALYST AND A STREAM III HAVING A LOW CATALYST CONTENT.

公开(公告)号：MY137122A

公开(公告)日：2008-12-31

申请号：MYPI20050327

申请日：2005-01-28

Applicant: BASF AG

Inventor： SCHEIDEL JENS DR ,  AECHTNER TOBIAS DR ,  JUNGKAMP TIM DR ,  BARTSCH MICHAEL DR ,  HADERLEIN GERD DR ,  BAUMANN ROBERT DR ,  LUYKEN HERMANN ,  DECKERT PETRA DR ,  PFAB PETER DR ,  SIEGEL WOLFGANG DR

IPC: C07C253/34 ,  C07C255/04 ,  C07F9/02

Abstract: A PROCESS FOR EXTRACTIVELY REMOVING NICKEL(0) COMPLEXES HAVING PHOSPHORUS LIGANDS AND/OR FREE PHOSPHORUS LIGANDS FROM A REACTION EFFLUENT OF A HYDROCYANATION OF UNSATURATED MONONITRILES TO DINITRILES BY EXTRACTION BY MEANS OF A HYDROCARBON, A PHASE SEPARATION OF THE HYDROCARBON AND OF THE REACTION EFFLUENT INTO TWO PHASE SBEING EFFECTED AT A TEMPERATURE T (IN °C), WHEREIN THE CONTENT OF NICKEL(0) COMPLEXES HAVING PHOSPHORUS LIGANDS AND/OR TREE PHOSPHORUS LIGANDS IN THE REACTION EFFLUENT OF THE HYDROCYANATION, DEPENDING ON THE TEMPERATURE T, IS AT LEAST Y% BY WEIGHT AND, IRRESPECTIVE OF THE TEMPERATURE T, IS A MAXIMUM OF 60% BY WEIGHT, WHERE THE NUMERICAL VALUE OF THE MINIMUM CONTENT Y IS GIVEN BY THE EQUATION Y = 0.5- T + 20 AND T IS TO BE USED IN THE EQUATION AS A DIMENSIONLESS NUMERICAL VALUE.

公开(公告)号：DE19804918A1

公开(公告)日：1999-08-12

申请号：DE19804918

申请日：1998-02-07

Applicant: BASF AG

Inventor： STROEFER ECKHARD DR ,  PFAB PETER DR ,  JACOBS JOHANNES ,  SEYFERT WILFRIED DR ,  PETERSEN PETER DR

IPC: C07C209/60 ,  C07C211/50

Abstract: In a process for the production of methylene-di-phenylamine from aniline (A) and formaldehyde (F) in presence of a protic acid, the condensation is carried out at 80-250 deg C and the reaction mixture in the condensation stage is homogenized in a dynamic or static mixer.

公开(公告)号：DE19725851A1

公开(公告)日：1998-12-24

申请号：DE19725851

申请日：1997-06-18

Applicant: BASF AG

Inventor： WATZENBERGER OTTO DR ,  SCHELLING HEINER ,  PFAB PETER DR ,  STROEFER ECKHARD DR

IPC: B01D3/00 ,  C01B21/14

Abstract: The invention relates to a method for the production of highly pure aqueous solution from free hydroxylamine, wherein the diluted aqueous hydroxylamine solution is concentrated in a column, the vapor containing hydroxylamine is removed from the bottom of the column via a side-stream and highly pure hydroxylamine is obtained through condensation of the vapors. The inventive method is simple and mild, can be used in large-scale production and yields "electronic grade" hydroxylamine.

公开(公告)号：DE4301776A1

公开(公告)日：1994-07-28

申请号：DE4301776

申请日：1993-01-23

Applicant: BASF AG

Inventor： PFAB PETER DR ,  WAHL PETER DR ,  FRANZ DIETER DR

IPC: C07D207/32 ,  C07D207/323 ,  C07D295/02

Abstract: Process for the purification of crude pyrroles obtained in the preparation of pyrroles of the general formula I in which R is hydrogen or a C1-C6-alkyl radical, characterised in that the mixture which contains the crude pyrrole is treated with an acid or an activated carboxylic acid derivative and the pyrrole is removed from the mixture by distillation at reduced pressure and a bottom temperature of up to 160@C.