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    METHOD FOR THE PRODUCTION OF POLYETHEROLS
    26.
    发明专利
    METHOD FOR THE PRODUCTION OF POLYETHEROLS 未知

    公开(公告)号：AU2003267340A1

    公开(公告)日：2004-04-08

    申请号：AU2003267340

    申请日：2003-09-11

    Applicant: BASF AG

    Inventor： RUPPEL RAIMUND ,  BAUM EVA ,  BOHRES EDWARD ,  HIBST HARTMUT ,  STOSSER MICHAEL

    IPC: B01J23/18 ,  C07B61/00 ,  C07C41/03 ,  C07C43/11 ,  C08G65/26

    Abstract: A process for preparation of polyetherols includes reaction of at least one alkylene oxide with at least one starter compound in the presence of a catalyst which is a multimetal oxide compound. A process for preparation of polyetherols includes reaction of at least one alkylene oxide with at least one starter compound in the presence of a catalyst, i.e. a multimetal oxide compound of formula (I). M1p(M2qOn(OH)2(3-n))x (I) M1 = at least 1 element from the groups IA, IIA, IIIA, IVA, VA, IB, IIB, IIIB, IVB, VB, VIB, VIIB and/or VIIIB; M2 = at least one element from groups IVA, VA and/or VIA, n = 2 or 3, p = 0 or fractional or whole number greater than 0, q = fractional or whole number greater than 0, x = 1-20 fractional or whole number. An Independent claim is included for a polyetherol obtained as above.

    DMC CATALYSTS, POLYETHER ALCOHOLS, AND METHOD FOR THE PRODUCTION THEREOF
    27.
    发明专利
    DMC CATALYSTS, POLYETHER ALCOHOLS, AND METHOD FOR THE PRODUCTION THEREOF 未知

    公开(公告)号：AU2003242723A1

    公开(公告)日：2004-01-06

    申请号：AU2003242723

    申请日：2003-06-18

    Applicant: BASF AG

    Inventor： RUPPEL RAIMUND ,  BAUM EVA ,  HARRE KATHRIN ,  BOHRES EDWARD ,  FRANKE DIRK ,  STOSSER MICHAEL

    IPC: C08G65/12 ,  B01J27/26 ,  B01J37/03 ,  C08G18/48 ,  C08G65/26

    Abstract: The invention relates to a process for preparing polyether alcohols by addition of alkylene oxides onto H-functional starter substances using multimetal cyanide compounds as catalysts, wherein the multimetal cyanide compound is prepared by a process comprising the steps: a) adding a metal salt solution to a cyanometalate solution at a specific stirring power epsilon in the range from 0.05 to 10 W/l, preferably from 0.4 to 4 W/l, a temperature in the range from 0° C. to 100° C., preferably from 20° C. to 60° C., and an addition time of from 5 to 120 minutes, b) reducing the specific stirring power epsilon to a value in the range from 0.03 to 0.8 W/l and at the same time adding a surface-active agent, c) heating the solution while stirring at a specific stirring power epsilon of from 0.03 to 0.8 W/l, to a temperature of not more than 100° C., preferably in the range from 55° C. to 75° C., d) adding further metal salt solution while stirring at a specific stirring power epsilon of from 0.03 to 0.8 W/l, e) when the conductivity begins to drop, dispersing the solid, for example by stirring while increasing the specific stirring power epsilon to >0.7 W/l or by installation of a pumped circuit with an appropriate pump or by means of a high-speed stirrer, f) stirring at the specific stirring power epsilon of step e) until the conductivity or the pH remains constant, g) separating off the multimetal cyanide compound and washing it with water and, if desired, h) drying the catalyst.

    Method for producing multimetal cyanide compounds
    30.
    发明专利
    Method for producing multimetal cyanide compounds 未知

    公开(公告)号：AU5213401A

    公开(公告)日：2001-09-12

    申请号：AU5213401

    申请日：2001-02-20

    Applicant: BASF AG

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

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

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