公开(公告)号：JP2003192637A

公开(公告)日：2003-07-09

申请号：JP2002258037

申请日：2002-09-03

Applicant: BASF AG

Inventor： NESTLER GERHARD ,  SCHROEDER JUERGEN DR ,  MCGLONE NICOLE

IPC: B01D3/14 ,  B01D3/10 ,  B01D3/34 ,  C07B61/00 ,  C07C67/08 ,  C07C69/54

Abstract: PROBLEM TO BE SOLVED: To provide a method for suppressing the polymerization of polymerizable compounds in a liquid circulation pump to decrease the loss of the valuable product in the liquid circulation pump. SOLUTION: The polymerizable compounds are prepared and/or worked up using at least one liquid circulation pump by a process in which a working liquid which contains a material stream from the preparation and/or working-up of the polymerizable compound is used in the liquid circulation pump. COPYRIGHT: (C)2003,JPO

公开(公告)号：DE10213998A1

公开(公告)日：2003-03-13

申请号：DE10213998

申请日：2002-03-27

Applicant: BASF AG

Inventor： HAMMON ULRICH ,  SCHROEDER JUERGEN ,  MCGLONE NICOLE

IPC: C07C45/33 ,  C07C45/35 ,  C07C45/38 ,  C07C45/78 ,  C07C45/82 ,  C07C45/86 ,  C07C47/22

Abstract: Purification of acrolein from a gas mixture produced by catalytic gas-phase oxidation of propane, propene, propanol and/or their precursors, by absorbing the acrolein from the cooled gas mixture with water and distilling the absorbate, comprises stabilizing the acrolein with copper and/or copper salts during absorption and/or distillation.