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公开(公告)号：DK1401846T3
公开(公告)日：2005-04-11
申请号：DK02754734
申请日：2002-06-21
Applicant: BASF AG
Inventor： VANDENMERSCH HUGUES , ORSTEN STEFAN , WULFF CHRISTIAN , VOSS HARTWIG
Abstract: The present invention relates to a process for the recovery of N-phosphonomethylglycine from an aqueous mixture which contains N-phosphonomethylglycine, ammonium halides, and alkali metal or alkaline earth metal halides and optionally organic impurities in dissolved form, where (a) the pH of the mixture is adjusted to a value in the range from 2 to 8, (b) a separation of the mixture on a selective nanofiltration membrane is performed, a retentate which is richer in N-phosphonomethylglycine and poorer in halides and a permeate which is richer in halides and poorer in N-phosphonomethylglycine being obtained, and (c) the N-phosphonomethylglycine is recovered from the retentate. The process according to the invention makes possible the recovery of the N-phosphonomethylglycine with simultaneous separation of the halide salts.
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公开(公告)号：DE50201799D1
公开(公告)日：2005-01-20
申请号：DE50201799
申请日：2002-06-21
Applicant: BASF AG
Inventor： VANDENMERSCH HUGUES , VOSS HARTWIG , ORSTEN STEFAN , WULFF CHRISTIAN
Abstract: The present invention relates to a process for the recovery of N-phosphonomethylglycine from an aqueous mixture which contains N-phosphonomethylglycine, ammonium halides, and alkali metal or alkaline earth metal halides and optionally organic impurities in dissolved form, where (a) the pH of the mixture is adjusted to a value in the range from 2 to 8, (b) a separation of the mixture on a selective nanofiltration membrane is performed, a retentate which is richer in N-phosphonomethylglycine and poorer in halides and a permeate which is richer in halides and poorer in N-phosphonomethylglycine being obtained, and (c) the N-phosphonomethylglycine is recovered from the retentate. The process according to the invention makes possible the recovery of the N-phosphonomethylglycine with simultaneous separation of the halide salts.
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公开(公告)号：IN2042CH2003A
公开(公告)日：2004-12-11
申请号：IN2042CH2003
申请日：2003-12-03
Applicant: BASF AG
Inventor： VANDENMERSCH HUGUES , VOSS HARTWIG , ORSTEN STEFAN , WULFF CHRISTIAN
Abstract: The present invention relates to a process for the recovery of N-phosphonomethylglycine from an aqueous mixture which contains N-phosphonomethylglycine, ammonium halides, and alkali metal or alkaline earth metal halides and optionally organic impurities in dissolved form, where (a) the pH of the mixture is adjusted to a value in the range from 2 to 8, (b) a separation of the mixture on a selective nanofiltration membrane is performed, a retentate which is richer in N-phosphonomethylglycine and poorer in halides and a permeate which is richer in halides and poorer in N-phosphonomethylglycine being obtained, and (c) the N-phosphonomethylglycine is recovered from the retentate. The process according to the invention makes possible the recovery of the N-phosphonomethylglycine with simultaneous separation of the halide salts.
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公开(公告)号：BR0210569A
公开(公告)日：2004-08-03
申请号：BR0210569
申请日：2002-06-21
Applicant: BASF AG
Inventor： VANDENMERSCH HUGUES , VOSS HARTWIG , ORSTEN STEFAN , WULFF CHRISTIAN
Abstract: The present invention relates to a process for the recovery of N-phosphonomethylglycine from an aqueous mixture which contains N-phosphonomethylglycine, ammonium halides, and alkali metal or alkaline earth metal halides and optionally organic impurities in dissolved form, where (a) the pH of the mixture is adjusted to a value in the range from 2 to 8, (b) a separation of the mixture on a selective nanofiltration membrane is performed, a retentate which is richer in N-phosphonomethylglycine and poorer in halides and a permeate which is richer in halides and poorer in N-phosphonomethylglycine being obtained, and (c) the N-phosphonomethylglycine is recovered from the retentate. The process according to the invention makes possible the recovery of the N-phosphonomethylglycine with simultaneous separation of the halide salts.
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公开(公告)号：ES2199898T3
公开(公告)日：2004-03-01
申请号：ES00993613
申请日：2000-12-22
Applicant: BASF AG
Inventor： WULFF CHRISTIAN , ORSTEN STEFAN , OFTRING ALFRED
Abstract: The present invention relates to a process for the preparation of N-phosphonomethylglycine by reacting a hexahydrotriazine derivative with a triacyl phosphite. The process gives N-phosphonomethylglycine in high yield and in a simple and inexpensive manner.
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Patent Agency Ranking
公开(公告)号：DK1240173T3
公开(公告)日：2003-09-15
申请号：DK00993613
申请日：2000-12-22
Applicant: BASF AG
Inventor： WULFF CHRISTIAN , ORSTEN STEFAN , OFTRING ALFRED
Abstract: The present invention relates to a process for the preparation of N-phosphonomethylglycine by reacting a hexahydrotriazine derivative with a triacyl phosphite. The process gives N-phosphonomethylglycine in high yield and in a simple and inexpensive manner.
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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：CA2450781A1
公开(公告)日：2003-01-03
申请号：CA2450781
申请日：2002-06-21
Applicant: BASF AG
Inventor： ZEHNER PETER , ORSTEN STEFAN , WULFF CHRISTIAN , OFTRING ALFRED
Abstract: The invention relates to a method for producing N-phosphonomethylglycine by reacting a hexahydrotriazine compound with a triacyle phosphate in an organi c solvent and the saponification of the phosphono compound which is obtained after previous extraction into an aqueous phase, and separation of the organ ic phase. According to the invention, said method prevents decomposition of the organic solvent during saponification.
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公开(公告)号：CA2395420A1
公开(公告)日：2001-07-05
申请号：CA2395420
申请日：2000-12-22
Applicant: BASF AG
Inventor： OFTRING ALFRED , WULFF CHRISTIAN , ORSTEN STEFAN
Abstract: The invention relates to a method for production of N-phosphonomethylglycine , by reaction of a hexahydrotriazine derivative with a triacylphosphite. The method produces N-phosphonomethylglycine in a simple and cost-effective mann er and in high yield.
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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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