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    12.
    发明专利
    未知

    公开(公告)号：DE50303819D1

    公开(公告)日：2006-07-27

    申请号：DE50303819

    申请日：2003-02-06

    Applicant: BASF AG

    Inventor： STOESSER MICHAEL ,  BOHRES EDWARD ,  GROSCH HEINRICH ,  SAGER WILFRIED

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

    Abstract: The present invention relates to a process for reacting epoxides with an initiator compound in the presence of a double metal cyanide compound as a catalyst, said process having a shortened induction period, and the double metal cyanide compound being activated by adding the epoxide to a mixture of double metal cyanide compound and initiator compound at an internal reactor pressure of less than 1 bar, and also to the polyethers themselves obtainable by such a process.

    14.
    发明专利
    未知

    公开(公告)号：DE50104687D1

    公开(公告)日：2005-01-05

    申请号：DE50104687

    申请日：2001-02-16

    Applicant: BASF AG

    Inventor： OSTROWSKI THOMAS ,  HARRE KATHRIN ,  GROSCH HEINRICH ,  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.

    15.
    发明专利
    未知

    公开(公告)号：DE50103101D1

    公开(公告)日：2004-09-09

    申请号：DE50103101

    申请日：2001-02-20

    Applicant: BASF AG

    Inventor： GROSCH HEINRICH ,  FRANKE DIRK ,  MUNZINGER MANFRED ,  HARRE KATHRIN ,  BAUM EVA ,  STOESSER MICHAEL

    IPC: B01J27/26 ,  C08G65/02 ,  C01C3/08 ,  C08G65/26

    Abstract: A process for preparing polyether polyols includes a precipitation step, a recrystallization step, and a reaction step. In the precipitation step, a multimetal cyanide compound is precipitated by reaction of a metal salt with a cyanometalate compound. In the recrystallization step, the multimetal cyanide compound precipitated above is recrystallized by adding further metal salt and/or further cyanometalate compound. The recrystallization forms a multimetal cyanide catalyst compound. In the reaction step, an initiator and one or more alkylene oxide are reacted in the presence of the multimetal cyanide catalyst compound.

    16.
    发明专利
    未知

    公开(公告)号：DE59803203D1

    公开(公告)日：2002-04-04

    申请号：DE59803203

    申请日：1998-06-05

    Applicant: BASF AG

    Inventor： GROSCH HEINRICH ,  MUELLER ULRICH ,  WALCH ANDREAS ,  RIEBER NORBERT ,  HARDER WOLFGANG

    IPC: B01J29/04 ,  B01J29/89 ,  B01J37/00 ,  C01B39/00 ,  C04B38/08 ,  C07D301/12

    Abstract: A process for the production of a molding containing at least one zeolite, wherein the at least one zeolite contains a titanium-, zirconium-, chromium-, niobium-, iron- or vanadium-containing zeolite:(I) adding a mixture consisting of at least one alcohol selected from the group consisting of methanol, ethanol, propanol or butanol, and water to a mixture containing said zeolite or a mixture of two or more thereof, and(II) kneading, molding, drying and calcining the mixture from (I);wherein the molding is useful as a catalyst, particularly in epoxidation reactions.

    18.
    发明专利
    未知

    公开(公告)号：DE50007641D1

    公开(公告)日：2004-10-07

    申请号：DE50007641

    申请日：2000-12-06

    Applicant: BASF AG

    Inventor： HARRE KATHRIN ,  HOEPPNER GERD ,  GROSCH 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.

    19.
    发明专利
    未知

    公开(公告)号：DE59810556D1

    公开(公告)日：2004-02-12

    申请号：DE59810556

    申请日：1998-06-05

    Applicant: BASF AG

    Inventor： GROSCH HEINRICH ,  MUELLER ULRICH ,  WALCH ANDREAS ,  RIEBER NORBERT ,  HARDER WOLFGANG

    IPC: B01J29/90 ,  B01J38/12 ,  B01J38/20 ,  C07B41/00 ,  C07C29/48 ,  C07C45/27 ,  C07C51/265 ,  C07D301/12

    Abstract: A process for regenerating a zeolite catalyst comprises the following stages: (I) Heating a partially or completely deactivated catalyst to 250-600° C. in an atmosphere which contains less than 2% by volume of oxygen, (II) treating the catalyst at from 250 to 800° C., preferably from 350 to 600° C., with a gas stream which contains from 0.1 to 4% by volume of an oxygen-donating substance or of oxygen or of a mixture of two or more thereof, and (III) treating the catalyst at from 250 to 800° C., preferably from 350 to 600° C., with a gas stream which contains from more than 4 to 100% by volume of an oxygen-donating substance or of oxygen or of a mixture of two or more thereof.

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