公开(公告)号：DE59609045D1

公开(公告)日：2002-05-16

申请号：DE59609045

申请日：1996-09-26

Applicant: BASF AG

Inventor： HAMMON DR ,  SCHLIEPHAKE DR ,  PIES DR ,  RAUH ULRICH

IPC: C07B63/00 ,  C07C51/44 ,  C07C57/04 ,  C07C57/07

Abstract: A process for the rectification and sepn. of unsatd. carboxylic acids (I) from the solvents in which (I) are absorbed after the synthesis reaction. The process involves interrupting the rectification and flushing out the rectification column with basic soln.

公开(公告)号：DE50004965D1

公开(公告)日：2004-02-12

申请号：DE50004965

申请日：2000-08-10

Applicant: BASF AG

Inventor： SUTORIS DR ,  WAGENBLAST DR ,  SCHLIEPHAKE DR ,  SCHROEDER DR ,  KELLER DR ,  JAWOREK DR

IPC: C09K15/08 ,  C07B63/04 ,  C07C7/20 ,  C07C51/50 ,  C07C67/62 ,  C09K15/02 ,  C09K15/04 ,  C09K15/20 ,  C09K15/24 ,  C09K15/30 ,  C09K15/32

Abstract: Inhibitor composition contains at least one nitroxyl radical (derivative), at least one phenol (derivative) and at least one other chemical compound containing phosphorus (P) atom(s). Inhibitor composition contains: (a) at least one nitroxyl radical (derivative) (I); (b) at least one phenol (derivative) (II); and (c) at least one other chemical compound (III) containing phosphorus (P) atom(s) with oxidation number +3. An Independent claim is also included for mixtures containing compound(s) with vinyl unsaturated group(s) and the inhibitor composition.

公开(公告)号：DE59907520D1

公开(公告)日：2003-12-04

申请号：DE59907520

申请日：1999-08-20

Applicant: BASF AG

Inventor： MACHHAMMER DR ,  HAUPT DR ,  SCHLIEPHAKE DR ,  SCHROEDER DR

IPC: C07C51/44 ,  C07C57/07

Abstract: A process for the continuous recovery of (meth)acrylic acid from a liquid starting mixture containing (meth)acrylic acid, a high-boiling organic solvent and low boilers, medium boilers and high boilers is proposed, the mixture being separated into a first part-stream (a), which, in addition to (meth)acrylic acid, contains the low boilers and a part each of the medium boilers and high boilers, and a second part-stream (b), which contains the predominant part of the (meth)acrylic acid and is completely or virtually completely free of low boilers, and the (meth)acrylic acid being recovered from the part-stream (b).

公开(公告)号：DE59804554D1

公开(公告)日：2002-08-01

申请号：DE59804554

申请日：1998-04-22

Applicant: BASF AG

Inventor： SCHLIEPHAKE DR ,  HAMMON DR ,  RAUH ULRICH ,  SCHRAUT DR

IPC: B01J8/06 ,  B01J19/00

Abstract: Reactor arrangement comprises at least two tubular reactors filled with solid particles, at least one reactor containing a temperature measuring device. The novelty is that the tubular reactors are arranged so that the ratio of the composition of the solid particles to the free cross-sectional surfaces of each reactor as well as the pressure loss, measured by passing an inert gas proportionally transversal to the free cross-sectional, are equal over each tubular reactor. Also claimed is a process for treating fluid compositions with the production and consumption of thermal energy using the above reactor arrangement.