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).