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    61.
    发明专利
    未知

    公开(公告)号：AT259793T

    公开(公告)日：2004-03-15

    申请号：AT01976093

    申请日：2001-08-16

    Applicant: BASF AG

    Inventor： ISAK HEINZ ,  SENDHOFF NORBERT ,  SCHUETZ FRANZ ,  THERRE JOERG ,  DROEGEMUELLER MICHAEL ,  FRANKE DIRK ,  MUNZINGER MANFRED ,  WECK ALEXANDER ,  BURKART KIRSTEN

    IPC: A01N25/12 ,  A01N43/88 ,  C07D285/34

    Abstract: Described is a process for the preparation of a particulate tetrahydro-3,5-dimethyl-1,3,5-thiadiazine-2-thione product by combining a first aqueous solution comprising methylammonium N-methyldithiocarbamate with a second aqueous solution comprising formaldehyde, followed by separation and drying of the resulting solid, which comprises combining the first and the second aqueous solutions in such a way that the ratio between the concentrations of dithiocarbamate functions and of formaldehyde is essentially constant in the reaction mixture over time during the duration of the reaction.

    63.
    发明专利
    未知

    公开(公告)号：DE50001372D1

    公开(公告)日：2003-04-10

    申请号：DE50001372

    申请日：2000-12-21

    Applicant: BASF AG

    Inventor： KESSEL KNUT ,  SCHERR GUENTER ,  BOGENSTAETTER THOMAS ,  ORSTEN STEFAN ,  FRANKE DIRK

    IPC: C07C277/06 ,  C07C277/08 ,  C07C279/14

    Abstract: Purification of creatine (I) involves adding the (I) to be purified, in anhydrous form, to a saturated aqueous solution of (I) monohydrate, so that the anhydrous (I) is dissolved with hydration, then separating the crystals of (I) monohydrate which precipitate from the solution. An Independent claim is also included for the preparation of (I) monohydrate, by: (a) reacting sarcosine with an guanylating agent in an aqueous medium, so that crude (I) monohydrate is precipitated; (b) separating the crude product form the medium; (c) optionally washing; (d) converting the product into anhydrous (I); (e) adding the anhydrous (I) to a saturated aqueous solution of (I) monohydrate, so that the anhydrous (I) is dissolved with hydration; (f) separating the crystals of (I) monohydrate which precipitate from the solution; and (g) utilizing the aqueous solution at least partially as aqueous medium in step (a) and/or washing liquid in step (c).

    Process for preparing polymetallic cyanide compounds
    64.
    发明专利
    Process for preparing polymetallic cyanide compounds 未知

    公开(公告)号：CZ20022891A3

    公开(公告)日：2003-02-12

    申请号：CZ20022891

    申请日：2001-02-20

    Applicant: BASF AG

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

    66.
    发明专利
    未知

    公开(公告)号：BR9807583A

    公开(公告)日：2000-03-21

    申请号：BR9807583

    申请日：1998-02-09

    Applicant: BASF AG

    Inventor： MERKLE HANS RUPERT ,  EVA RONALD R ,  FRANKE DIRK ,  JONES SIMON A ,  MATTMANN WOLFGANG ,  MUNZINGER MANFRED

    IPC: C07C51/48 ,  C07C51/02 ,  C07C65/03 ,  C07C65/21 ,  C07C65/24

    Abstract: PCT No. PCT/EP98/00705 Sec. 371 Date Jul. 28, 1999 Sec. 102(e) Date Jul. 28, 1999 PCT Filed Feb. 9, 1998 PCT Pub. No. WO98/37054 PCT Pub. Date Aug. 27, 1998A process for the isolation of 3-[2-chloro-4-(trifluoromethyl)phenoxy]benzoic acid of the formula I from an aqueous solution of its metal salt comprises a) reacting the metal salt of 3-[2-chloro-4-(trifluoromethyl)phenoxy]benzoic acid with an organic or inorganic acid; b) heating the reaction mixture until a liquid two-phase system of organic and aqueous phase has formed; and c) separating the organic phase from the aqueous phase.

    69.
    发明专利
    未知

    公开(公告)号：DE50301943D1

    公开(公告)日：2006-01-19

    申请号：DE50301943

    申请日：2003-06-18

    Applicant: BASF AG

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

    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.

    Production of ammonium salts of aromatic carboxylic acids
    70.
    发明专利
    Production of ammonium salts of aromatic carboxylic acids 未知

    公开(公告)号：NZ533023A

    公开(公告)日：2005-09-30

    申请号：NZ53302302

    申请日：2002-12-03

    Applicant: BASF AG

    Inventor： KLOPP INGO ,  BOGENSTATTER THOMAS ,  FRANKE DIRK

    IPC: C07C51/41 ,  C07C20060101 ,  C07C63/00 ,  C07C63/04 ,  C07C63/08

    Abstract: A process for preparing ammonium salts of aromatic carboxylic acids by reacting an aromatic carboxylic acid with ammonia in an aprotic solvent, which comprises carrying out the reaction in a closed vessel by continuously introducing a solution of the aromatic carboxylic acid in the aprotic solvent and passing in gaseous ammonia so that an ammonia partial pressure in the range from 0.1 to 3 bar is maintained in the gas space of the vessel, and discharging a suspension of the ammonium salt in the aprotic solvent.

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