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公开(公告)号:MXPA04004852A
公开(公告)日:2004-07-30
申请号:MXPA04004852
申请日:2002-12-03
Applicant: BASF AG
Inventor: KLOPP INGO , BOGENSTAETTER THOMAS , FRANKE DIRK
IPC: C07C51/41 , C07C20060101 , C07C63/00 , C07C63/04 , C07C63/08
Abstract: Se describe un metodo para la produccion de sales de amonio de acidos carboxilicos aromaticos mediante la reaccion de un acido carboxilico aromatico con amoniaco en un solvente aprotico. Dicha reaccion se lleva a cabo en un recipiente cerrado y una solucion del acido carboxilico aromatico en un solvente aprotico y amoniaco gaseoso es introducida de manera continua dentro del recipiente, de manera que se mantiene una presion parcial de amoniaco de 0.1 hasta 3 bars en la camara de gas del recipiente y una suspension de la sal de amonio se separa en el solvente aprotico. El metodo permite la produccion de sales de amonio con tamano de cristal definido y una distribucion de tamano estrecha.
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公开(公告)号:DE50004382D1
公开(公告)日:2003-12-18
申请号:DE50004382
申请日:2000-02-10
Applicant: BASF AG
Inventor: KESSEL KNUT , KLUGE MICHAEL , BOGENSTAETTER THOMAS , SCHERR GUENTER
IPC: C07C277/02 , C07C277/08 , C07C279/14
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公开(公告)号:DE10216638A1
公开(公告)日:2003-10-23
申请号:DE10216638
申请日:2002-04-15
Applicant: BASF AG
Inventor: KLOPP INGO , BOGENSTAETTER THOMAS , FRANKE DIRK
IPC: C07F9/06 , C07C51/02 , C07C51/41 , C07F9/141 , C07B63/00 , C07B47/00 , C07B41/08 , C07B41/10 , C07B41/04
Abstract: A process for the production of ethers, esters or acid anhydrides comprises flowing a solution of an inorganic or organic acid halide and alkyl halide through a filter cake containing salts of organic or oxygen containing inorganic acids or alcoholates such that the insoluble halide salt formed remains of the filter.
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公开(公告)号:CA2481222A1
公开(公告)日:2003-10-23
申请号:CA2481222
申请日:2003-04-14
Applicant: BASF AG
Inventor: FRANKE DIRK , BOGENSTAETTER THOMAS , KLOPP INGO
Abstract: Ethers, esters or acid anhydrides are advantageously obtained when a cake situated on a filtering element and consisting of a first reactant, which is selected among salts of organic or oxygen-containing inorganic acids or alcoholates, is flown though by a solution consisting of a second reactant, which is selected among inorganic or organic acid halides and alkyl halides, whereby the formed insoluble halide salt remains on the filtering element. This enables the halide salt to be easily separated in an essentially quantitative manner.
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公开(公告)号:AT249426T
公开(公告)日:2003-09-15
申请号:AT99125660
申请日:1999-12-22
Applicant: BASF AG
Inventor: KESSEL KNUT , KLUGE MICHAEL , GREINDL THOMAS , BOGENSTAETTER THOMAS , SCHERR GUENTER , RAULS MATTHIAS , VAN GELDER RICHARD
IPC: C07C277/08 , C07C279/14 , C07C303/22 , C07C309/15 , C07F9/38
Abstract: Preparation of guanidine derivatives (I) comprises reacting O-alkylisourea salts (II) with an amine (III) in the presence of seed crystals of (I). Preparation of guanidine derivatives of formula (I) comprises reacting O-alkylisourea salts of formula (II) with an amine of formula (III) in the presence of seed crystals of (I). R1 = 1-8C alkylene or a divalent 5-10C cycloaliphatic group; R2 = H or 1-8C alkyl; or NR1R2 = 5-6 membered ring substituted by Z; Z = COOR3, SO2OR3 or PO(OR3)(OR4); R3 = H, alkalimetal or an equivalent of an alkaline earth metal; and R4 = as for R3 or 1-6C alkyl; R5 = 1-8C alkyl; X = equivalent of an anion.
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公开(公告)号:AT233728T
公开(公告)日:2003-03-15
申请号:AT00128184
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).
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公开(公告)号:DE19962227A1
公开(公告)日:2001-06-28
申请号:DE19962227
申请日:1999-12-22
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).
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公开(公告)号:TR200002359T2
公开(公告)日:2001-04-20
申请号:TR200002359
申请日:1999-01-22
Applicant: BASF AG
Inventor: KAPPES ELISABETH , BRODT GREGOR , KRONER RUDI , WAGNER NORBERT , BOGENSTAETTER THOMAS , HILDEBRANDT SOREN
IPC: C07B45/02 , C07D213/20
Abstract: Described is a process for preparing 1-(2-sulfoethyl)pyridinium betaine wherein pyridine is reacted with a sulfoethylating agent from the group consisting of carbyl sulfate, ethionic acid and its salt and vinylsulfonic acid and vinylsulfonate, the reaction taking place in aqueous solution or in pyridine.
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公开(公告)号:DE19905711A1
公开(公告)日:2000-08-17
申请号:DE19905711
申请日:1999-02-11
Applicant: BASF AG
Inventor: KESSEL KNUT , KLUGE MICHAEL , BOGENSTAETTER THOMAS , SCHERR GUENTER
IPC: C07C277/02 , C07C277/08 , C07C279/14 , C07B43/00 , C07C277/06 , C07C309/15 , C07D207/10 , C07D211/36 , C07F9/40
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公开(公告)号:DE19841525A1
公开(公告)日:2000-03-16
申请号:DE19841525
申请日:1998-09-10
Applicant: BASF AG
Inventor: KESSEL KNUT , SCHERR GUENTER , KLUGE MICHAEL , BIEDERMANN NORBERT , GREINDL THOMAS , BOGENSTAETTER THOMAS , HAEHNLEIN WOLFGANG
IPC: C07C279/14 , C07C277/02 , C07C277/08
Abstract: Preparation of creatine or creatine monohydrate by reaction of sodium or potassium sarcosinate with cyanamide at 20-150 degrees C and pH 7.0 to 14.0, the pH value is obtained using carbonic acid.
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