公开(公告)号：BR0108648A

公开(公告)日：2003-04-22

申请号：BR0108648

申请日：2001-02-22

Applicant: BASF AG

Inventor： OSTROWSKI THOMAS ,  HARRE KATHRIN ,  ZEHNER PETER ,  LLER J RN M ,  TZER DIETER ST ,  GROSCH GEORG HEINRICH ,  WINKLER J RGEN ,  BAUER STEPHAN

IPC: B01J27/26 ,  C08G65/26 ,  C08G65/28

Abstract: Production of polyether polyols comprises use of a multi-metal cyanide complex catalyst in a tall cylindrical reactor having a downward facing spray nozzle in the upper reactor portion, through which the educts and reaction mixture are fed and an outlet, preferably in the lower portion of the reactor to recirculate the reaction mixture via an external circuit and equalizing reservoir. A process for the production of polyether polyols (I) by reaction of diols or polyols with ethylene oxide, propylene oxide and/or butylene oxide in the presence of a multi-metal cyanide complex catalyst (II) comprises carrying out the reaction in a tall cylindrical reactor having a downward facing spray nozzle in the upper reactor portion, through which the educts and reaction mixture are fed, and an outlet, preferably in the lower portion of the reactor, through which the reaction mixture is fed by means of a pump through an external circuit via an equalizing reservoir to the spray nozzle. The external circuit comprises a concentric pipe stretching the entire length of the reactor excluding the reactor ends and contains a heat exchanger integrated within the annulus.

公开(公告)号：BR0108651A

公开(公告)日：2002-12-17

申请号：BR0108651

申请日：2001-02-22

Applicant: BASF AG

Inventor： OSTROWSKI THOMAS ,  HARRE KATHRIN ,  GROSCH GEORG HEINRICH ,  PPNER GERD H ,  VOCHT PETER DE ,  LEYS DIRK ,  WINKLER J RGEN ,  BAUER STEPHAN

IPC: C08G65/28 ,  C08G65/26

Abstract: A process for the preparation of polyetherpolyols by reacting diols or polyols with ethylene oxide, propylene oxide, butylene oxide or a mixture thereof in the presence of a multimetal cyanide complex catalyst is proposed, the reaction being carried out in a stirred kettle reactor and the reaction mixture being circulated via an external heat exchanger by means of a pump.