公开(公告)号：AT497491T

公开(公告)日：2011-02-15

申请号：AT03773710

申请日：2003-11-11

Applicant: BASF SE

Inventor： FISCHER ROLF-HARTMUTH ,  LUYKEN HERMANN ,  ANSMANN ANDREAS ,  BASLER PETER ,  BENISCH CHRISTOPH ,  MAIXNER STEFAN ,  MELDER JOHANN-PETER

IPC: C07D201/16 ,  C07D201/08

Abstract: A process for removing high boilers from crude caprolactam which comprises high boilers, caprolactam and in some cases low boilers, and which has been obtained by a) reacting 6-aminocapronitrile with water to give a reaction mixture b) removing ammonia and unconverted water from the reaction mixture to obtain crude caprolactam, which comprises c) feeding the crude caprolactam to a distillation apparatus to obtain a first substream via the top as a product and a second substream via the bottom, by setting the pressure in the distillation in such a way that the bottom temperature does not go below 170° C., and adjusting the second substream in such a way that the caprolactam content of the second substream is not less than 10% by weight, based on the entire second substream.

公开(公告)号：PL1631615T3

公开(公告)日：2008-05-30

申请号：PL04731364

申请日：2004-05-06

Applicant: BASF SE

Inventor： WINTERLING HELMUT ,  DEMETER JÜRGEN ,  DEININGER JÜRGEN ,  KORY GAD ,  SÖTJE OLIVER ,  NEUHAUS RALF ,  KREMPEL KURT ,  BENISCH CHRISTOPH

IPC: C08G69/02 ,  C08G69/14 ,  C08G69/18

公开(公告)号：PT1527042E

公开(公告)日：2008-09-01

申请号：PT03766230

申请日：2003-07-18

Applicant: BASF SE

Inventor： MELDER JOHANN-PETER ,  KLAUS EBEL DR ,  LOEBER OLIVER ,  BENISCH CHRISTOPH

IPC: C07C213/02 ,  C07B61/00 ,  C07C217/58 ,  C07C253/30 ,  C07C255/54

公开(公告)号：AT402136T

公开(公告)日：2008-08-15

申请号：AT03766230

申请日：2003-07-18

Applicant: BASF SE

Inventor： LOEBER OLIVER ,  BENISCH CHRISTOPH ,  EBEL KLAUS ,  MELDER JOHANN-PETER

IPC: C07C213/02 ,  C07B61/00 ,  C07C217/58 ,  C07C253/30 ,  C07C255/54

Abstract: The invention relates to a process for preparing 4-[aminoalkoxy]benzylamines of the general formula (I) by catalytically hydrogenating 4-[aminoalkoxy]benzonitriles of the general formula (II) where, in the compounds of the general formulae I and II, R 1 is C 1 -C 8 -alkylene, R 2 and R 3 are each independently C 1 -C 8 -alkyl or are joined to give a ring which may additionally contain a heteroatom, which comprises carrying out the hydrogenation at elevated pressure and elevated temperatures. The invention further relates to a process for preparing the intermediate (II).