公开(公告)号：BR0016343A

公开(公告)日：2002-08-27

申请号：BR0016343

申请日：2000-12-06

Applicant: BASF AG

Inventor： HARRE KATHRIN ,  HUPPNER GERD ,  GROSCH GEORG HEINRICH ,  BAUER STEPHAN ,  WINKLER JURGEN ,  PAREDIS ELS ,  LORENZ REINHARD ,  ROTERMUND INGE

IPC: C08G65/20 ,  C08G18/48 ,  C08G65/26

Abstract: In a process for preparing polyether alcohols by catalytic addition of at least two alkylene oxides onto H-functional initiator substances, at least one multimetal cyanide compound is used as catalyst and the addition of the alkylene oxides onto the initiator substance includes incorporation of at least one oxyalkylene block during whose formation at least two alkylene oxides are metered in together and the ratio of the alkylene oxides to one another in the mixture is changed during the joint introduction.