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    1.
    发明专利
    未知

    公开(公告)号：BRPI0611122A2

    公开(公告)日：2010-11-09

    申请号：BRPI0611122

    申请日：2006-05-02

    Applicant: BASF AG

    Inventor： OFTRING ALFRED ,  BRAUN GEROLD ,  WIRSING FRIEDRICH ,  STAMM ARMIN ,  BALDENIUS KAI-UWE

    IPC: C07C227/26 ,  C07C229/16

    Abstract: The invention relates to a process for preparing low-by-product, light-color methylglycine-N,N-diacetic acid tri(alkali metal) salt by alkaline hydrolysis of methylglycinediacetonitrile (MGDN), comprising the steps in the sequence (a) to (f): (a) mixing of MGDN with aqueous alkali at a temperature of ≦̸30° C.; (b) allowing the aqueous alkaline MGDN suspension to react at a temperature in the range from 10 to 30° C. over a period of from 0.1 to 10 h to form a solution; (c) allowing the solution from step (b) to react at a temperature in the range from 30 to 40° C. over a period of from 0.1 to 10 h; (d) optionally allowing the solution from step (c) to react at a temperature in the range from 50 to 80° C. over a period of from 0.5 to 2 h; (e) optionally allowing the solution from step (c) or (d) to react at a temperature in the range from 110 to 200° C. over a period of from 5 to 60 min; (f) hydrolysis and removal of ammonia of the solution obtained in step (c), (d) or (e) by stripping at a temperature of from 90 to 105° C.

    4.
    发明专利
    未知

    公开(公告)号：DE59813264D1

    公开(公告)日：2006-01-12

    申请号：DE59813264

    申请日：1998-04-16

    Applicant: BASF AG

    Inventor： HOESSEL PETER ,  ZIRNSTEIN MICHAEL ,  SCHUNTER WALTER ,  WIRSING FRIEDRICH ,  KASEL WOLFGANG ,  OPPENLAENDER KNUT

    IPC: A61K8/00 ,  A61K8/24 ,  A61K8/40 ,  A61K8/41 ,  A61Q5/00 ,  A61Q5/02 ,  A61Q5/04 ,  A61Q5/10 ,  C11D1/62 ,  D06P1/62

    Abstract: The disclosure sets forth aqueous cationic surfactant formulations and a process for their preparation. The formulations contains in solution a) from 10 to 50% by weight of a quaternary ammonium compound of the formula I:where: the substituents have the meanings set forth in the description, and b) from 0.01 to 15% by weight of an amine of the formula III:and c) from 0.1 to 5.0% by weight of a buffer which maintains a pH in a range from 4 to 9. The surfactant formulation is prepared by reacting an amine of the formula IIIin aqueous solution with a dialkyl sulfate of the formula IVwhere R1 to R5 are in a molar ratio range from 85 to 99.99 mol %, based on the amine and at from 20 to 100 degrees C. and then adding to the reaction solution from 0.1 to 5.0% by weight of a buffer which maintains a pH in a range from 4 to 9.

    6.
    发明专利
    未知

    公开(公告)号：DE102005021055A1

    公开(公告)日：2006-11-09

    申请号：DE102005021055

    申请日：2005-05-06

    Applicant: BASF AG

    Inventor： OFTRING ALFRED ,  BRAUN GEROLD ,  WIRSING FRIEDRICH ,  STAMM ARMIN ,  BALDENIUS KAI-UWE

    IPC: C07C227/26 ,  C07C227/20 ,  C07C229/16

    Abstract: The invention relates to a process for preparing low-by-product, light-color methylglycine-N,N-diacetic acid tri(alkali metal) salt by alkaline hydrolysis of methylglycinediacetonitrile (MGDN), comprising the steps in the sequence (a) to (f): (a) mixing of MGDN with aqueous alkali at a temperature of ≦̸30° C.; (b) allowing the aqueous alkaline MGDN suspension to react at a temperature in the range from 10 to 30° C. over a period of from 0.1 to 10 h to form a solution; (c) allowing the solution from step (b) to react at a temperature in the range from 30 to 40° C. over a period of from 0.1 to 10 h; (d) optionally allowing the solution from step (c) to react at a temperature in the range from 50 to 80° C. over a period of from 0.5 to 2 h; (e) optionally allowing the solution from step (c) or (d) to react at a temperature in the range from 110 to 200° C. over a period of from 5 to 60 min; (f) hydrolysis and removal of ammonia of the solution obtained in step (c), (d) or (e) by stripping at a temperature of from 90 to 105° C.

    METHOD FOR PRODUCING METHYLGLYCINE-N,N-DIETHANOIC ACID-TRIALKALI METAL SALTS WITH A LOW BY-PRODUCT CONTENT
    8.
    发明专利
    METHOD FOR PRODUCING METHYLGLYCINE-N,N-DIETHANOIC ACID-TRIALKALI METAL SALTS WITH A LOW BY-PRODUCT CONTENT 未知

    公开(公告)号：CA2607232A1

    公开(公告)日：2006-11-16

    申请号：CA2607232

    申请日：2006-05-02

    Applicant: BASF AG

    Inventor： BRAUN GEROLD ,  OFTRING ALFRED ,  BALDENIUS KAI-UWE ,  STAMM ARMIN ,  WIRSING FRIEDRICH

    IPC: C07C227/26 ,  C07C229/16

    Abstract: The invention relates to a process for preparing low-by-product, light-color methylglycine-N,N-diacetic acid tri(alkali metal) salt by alkaline hydrolysis of methylglycinediacetonitrile (MGDN), comprising the steps in the sequence (a) to (f): (a) mixing of MGDN with aqueous alkali at a temperature of ≦̸30° C.; (b) allowing the aqueous alkaline MGDN suspension to react at a temperature in the range from 10 to 30° C. over a period of from 0.1 to 10 h to form a solution; (c) allowing the solution from step (b) to react at a temperature in the range from 30 to 40° C. over a period of from 0.1 to 10 h; (d) optionally allowing the solution from step (c) to react at a temperature in the range from 50 to 80° C. over a period of from 0.5 to 2 h; (e) optionally allowing the solution from step (c) or (d) to react at a temperature in the range from 110 to 200° C. over a period of from 5 to 60 min; (f) hydrolysis and removal of ammonia of the solution obtained in step (c), (d) or (e) by stripping at a temperature of from 90 to 105° C.

    Method for producing methylglycine-N,N-diethanoic acid-trialkali metal salts with a low by-product content
    9.
    发明专利
    Method for producing methylglycine-N,N-diethanoic acid-trialkali metal salts with a low by-product content 未知

    公开(公告)号：AU2006245816A1

    公开(公告)日：2006-11-16

    申请号：AU2006245816

    申请日：2006-05-02

    Applicant: BASF AG

    Inventor： BRAUN GEROLD ,  STAMM ARMIN ,  WIRSING FRIEDRICH ,  OFTRING ALFRED ,  BALDENIUS KAI-UWE

    IPC: C07C227/26 ,  C07C229/16

    Abstract: The invention relates to a process for preparing low-by-product, light-color methylglycine-N,N-diacetic acid tri(alkali metal) salt by alkaline hydrolysis of methylglycinediacetonitrile (MGDN), comprising the steps in the sequence (a) to (f): (a) mixing of MGDN with aqueous alkali at a temperature of ≦̸30° C.; (b) allowing the aqueous alkaline MGDN suspension to react at a temperature in the range from 10 to 30° C. over a period of from 0.1 to 10 h to form a solution; (c) allowing the solution from step (b) to react at a temperature in the range from 30 to 40° C. over a period of from 0.1 to 10 h; (d) optionally allowing the solution from step (c) to react at a temperature in the range from 50 to 80° C. over a period of from 0.5 to 2 h; (e) optionally allowing the solution from step (c) or (d) to react at a temperature in the range from 110 to 200° C. over a period of from 5 to 60 min; (f) hydrolysis and removal of ammonia of the solution obtained in step (c), (d) or (e) by stripping at a temperature of from 90 to 105° C.

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