公开(公告)号：DE59708164D1

公开(公告)日：2002-10-17

申请号：DE59708164

申请日：1997-04-22

Applicant: BASF AG

Inventor： KAIBEL DR ,  STROEZEL MANFRED ,  RHEUDE DR

IPC: B01D3/14 ,  B01D3/16 ,  B01D3/32 ,  B01J19/32

Abstract: A partitioned column for separating a multi-component mixture into three or more fractions comprises at least one removable partition wall. Also claimed is a process for separating a multi-component mixture into three or more fractions using the above column.

公开(公告)号：DE59806481D1

公开(公告)日：2003-01-16

申请号：DE59806481

申请日：1998-02-20

Applicant: BASF AG

Inventor： KIEFER DR ,  SIEGEL DR ,  THERRE DR ,  PAHL MELANIE ,  AQUILA DR ,  SCHAEFER-LUEDERSSEN DR ,  RHEUDE DR

IPC: C07B61/00 ,  C07C29/56 ,  C07C33/02 ,  C07C33/03

公开(公告)号：DE59706425D1

公开(公告)日：2002-03-28

申请号：DE59706425

申请日：1997-10-20

Applicant: BASF AG

Inventor： STROEZEL MANFRED ,  RHEUDE DR ,  RAHN DR ,  KAIBEL DR

IPC: C07B49/00 ,  C07C29/124 ,  C07C29/40 ,  C07C31/00 ,  C07C33/02

Abstract: A process for carrying out exothermic reactions comprises (a) addition reaction of an organomagnesium halide of formula RMgX with a carbonyl compound; and (b) hydrolysis of the addition product in a solvent or solvent mixture, in which much of the heat liberated in the reaction is removed by evaporation of the solvent. R = 1-6C alkyl, alkenyl or alkynyl, or aryl; X = Cl, Br or I.

公开(公告)号：DE59508621D1

公开(公告)日：2000-09-14

申请号：DE59508621

申请日：1995-09-23

Applicant: BASF AG

Inventor： KRAUSE DR ,  ERNST DR ,  PAUST DR ,  RHEUDE DR ,  DOBLER DR

IPC: C07C67/307 ,  C07C69/65 ,  C07F9/40

Abstract: Prodn. of trialkyl 4-phosphono-2-methyl-2-butenoate esters of formula (I) with a high E-isomer content comprises (a) reacting an alkyl 2-hydroxy-2-methyl-3-butenoate of formula (II) with PBr3 or PCl3 at 0-80 degrees C in the absence of pyridine to form a mixt. of an alkyl 4-halo-2- methyl-2-butenoate of formula (III) and an alkyl 2-halo-2-methyl-3-butenoate of formula (IV), and (b) reacting the mixt. with a trialkyl phosphite of formula (V) at 70-140 degrees C. R1, R2 = Me or Et; X = Cl or Br. Also claimed is the prodn. of (III) as in step (a) above at a temp. of 20-80 degrees C.

公开(公告)号：DE59701788D1

公开(公告)日：2000-07-06

申请号：DE59701788

申请日：1997-01-15

Applicant: BASF AG

Inventor： KAIBEL DR ,  RHEUDE DR ,  STROEZEL MANFRED ,  GRAAUW PROF DR ,  OLUJIC DR ,  FREY GUENTHER ,  JANSEN HELMUT

IPC: B01D3/28 ,  B01J19/32