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    1.
    发明专利
    未知

    公开(公告)号：DE502005002059D1

    公开(公告)日：2008-01-03

    申请号：DE502005002059

    申请日：2005-06-22

    Applicant: BASF AG

    Inventor： OSTROWSKI THOMAS ,  BAUER STEPHAN ,  LOEFFLER ACHIM ,  WINKLER JUERGEN

    IPC: C08G65/00

    Abstract: The invention provides a process for continuously preparing polyether alcohols by adding alkylene oxides to H-functional starter substances using a DMC catalyst, comprising the steps of a) preparing a precursor by continuously metering an H-functional starter substance, an alkylene oxide or a mixture of at least two alkylene oxides and the required amount of DMC catalyst into a continuous reactor, b) continuously withdrawing the precursor from step a) from the reactor, c) continuously metering the product from step a), an alkylene oxide different from that in step a) or a mixture of at least two alkylene oxides different from that in step a) and, if appropriate, the required amount of DMC catalyst into a further continuous reactor.

    5.
    发明专利
    未知

    公开(公告)号：AT275163T

    公开(公告)日：2004-09-15

    申请号：AT00993409

    申请日：2000-12-06

    Applicant: BASF AG

    Inventor： HARRE KATHRIN ,  HOEPPNER GERD ,  GROSCH GEORG HEINRICH ,  BAUER STEPHAN ,  WINKLER JUERGEN ,  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.

    METHOD FOR PRODUCING POLYETHERPOLYOLS IN THE PRESENCE OF A MULTIMETAL CYANIDE COMPLEX CATALYST
    8.
    发明专利
    METHOD FOR PRODUCING POLYETHERPOLYOLS IN THE PRESENCE OF A MULTIMETAL CYANIDE COMPLEX CATALYST 未知

    公开(公告)号：HU0204462A2

    公开(公告)日：2003-04-28

    申请号：HU0204462

    申请日：2001-02-16

    Applicant: BASF AG

    Inventor： GROSCH GEORG HEINRICH ,  HARRE KATHRIN ,  OSTROWSKI THOMAS ,  WINKLER JUERGEN

    IPC: B01J19/18 ,  B01J27/26 ,  C08G65/26 ,  C08G65/28

    Abstract: Production of polyether polyols by reaction of diols or polyols with a 2-4C alkylene oxide in the presence of a multi-metal cyanide complex catalyst comprises use of a tall vertical cylindrical reactor with a central stirrer and heat exchange plates arranged in the longitudinal direction of the reactor at an angle, alpha , of 0-70 [deg] in the direction of rotation of the stirrer to the reactor radius. 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 vertical cylindrical reactor with a central stirrer and heat exchanger plates, through which a heat exchange medium flows and which are arranged essentially in the longitudinal direction of the reactor at an angle alpha , of 0-70 [deg] in the direction of rotation of the stirrer to the reactor radius.

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