公开(公告)号：BR9915230A

公开(公告)日：2001-07-31

申请号：BR9915230

申请日：1999-11-05

Applicant: BASF AG

Inventor： AICHINGER HEINRICH ,  HERBST HOLGER ,  NESTLER GERHAR ,  SCHROEDER JUERGEN ,  BECKMANN STEFAN

IPC: C07C67/08 ,  C07C67/327 ,  C07C67/60 ,  C07C69/54

Abstract: In a process for esterifying (meth)acrylic acid with an alkanol in the presence of an esterification catalyst, in which unconverted starting compounds and (meth)acrylic ester to be formed are separated off by distillation and an oxyester-containing bottom product is formed, the bottom product is first separated off and then the oxyesters contained in it are cleaved in the presence of a relatively long-chain alkylbenzenesulfonic acid at elevated temperatures.