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    MEANS AND METHODS FOR MANUFACTURING RACEMIC ALANINE FOR THE MGDA SYNTHESIS
    1.
    发明公开
    MEANS AND METHODS FOR MANUFACTURING RACEMIC ALANINE FOR THE MGDA SYNTHESIS 审中-公开

    公开(公告)号：US20240301453A1

    公开(公告)日：2024-09-12

    申请号：US18268177

    申请日：2021-12-20

    Applicant: BASF SE

    Inventor： Sophie MAITRO-VOGEL ,  Michael BREUER ,  Dan-Tam Daniel TANG ,  Thomas SCHMIDT

    IPC: C12P13/06 ,  C07C227/12 ,  C12N9/90

    CPC classification number: C12P13/06 ,  C07C227/12 ,  C12N9/90 ,  C12Y501/01001

    Abstract: The present invention relates to the field of chemical manufacture. In particular, it relates to a method for manufacturing racemic methylglycinediacetic acid (MGDA) comprising the steps of contacting a solution comprising or being enriched in D-alanine or L-alanine to an alanine racemase at a temperature of at least 50° C. and alkaline conditions for a time sufficient to allow conversion of said solution into a racemic alanine solution, obtaining a racemic alanine solution, and chemically converting the racemic alanine into racemic MGDA. The invention further contemplates an alanine racemase which is capable of converting a solution comprising or being enriched in D-alanine or L-alanine into racemic alanine solution at a temperature of at least 50° C. and under alkaline conditions as well as the use of said alanine racemase for converting a solution comprising or being enriched in D-alanine or L-alanine into racemic alanine solution at a temperature of at least 50° C. and under alkaline conditions.

    PROCESS FOR MANUFACTURE OF A COMPLEXING AGENT
    3.
    发明申请
    PROCESS FOR MANUFACTURE OF A COMPLEXING AGENT 有权

    公开(公告)号：US20230135390A1

    公开(公告)日：2023-05-04

    申请号：US17908819

    申请日：2021-02-25

    Applicant: BASF SE

    Inventor： Thomas SCHMIDT ,  Armin STAMM ,  Dan-Tam Daniel TANG ,  Nataliia SHYMANSKA ,  Verena MORMUL

    IPC: C07C253/10

    Abstract: A process for making a complexing agent with an enantiomeric excess of at least 60%, wherein said process comprises the following steps: (a) reacting an aqueous slurry of alanine with an enantiomeric excess of at least 60% with formaldehyde and hydrocyanic acid, thereby forming an aqueous solution of alanine-bisacetonitrile, (b) saponifying the alanine-bisacetonitrile from step (a) by combining the aqueous solution obtained in step (a) with an aqueous solution of alkali metal hydroxide.

    MIXTURES OF CHELATING AGENTS, AND PROCESS FOR MAKING SUCH MIXTURES
    5.
    发明申请
    MIXTURES OF CHELATING AGENTS, AND PROCESS FOR MAKING SUCH MIXTURES 审中-公开

    公开(公告)号：US20190127668A1

    公开(公告)日：2019-05-02

    申请号：US16086931

    申请日：2017-03-29

    Applicant: BASF SE

    Inventor： Thomas SCHMIDT ,  Marta REINOSO GARCIA ,  Carsten SUELING ,  Verena MORMUL

    IPC: C11D11/00 ,  C11D3/33 ,  C11D17/00

    Abstract: The present invention is directed towards mixtures comprising (A) 90 to 99.999% by weight of racemic methyl glycine diacetic acid (MGDA) or of MGDA with predominantly the L-isomer in an enantiomeric excess of up to 9.5% or their respective mono-, di- or trialkali metal or mono-, di- or triammonium salts, and (B) in total 0.001 to 10% by weight of the diacetic acid derivative of aspartate as free acid or as mono-, di-, tri- or tetraalkali metal salt or as mono-, di-, tri- or tetraammonium salt, percent ages referring to the sum from (A) and (B).

    PROCESS FOR MAKING A GRANULE
    7.
    发明公开
    PROCESS FOR MAKING A GRANULE 审中-公开

    公开(公告)号：US20230143616A1

    公开(公告)日：2023-05-11

    申请号：US17911741

    申请日：2021-03-12

    Applicant: BASF SE

    Inventor： Marta REINOSO GARCIA ,  Sylke HAREMZA ,  Tile GIESHOFF ,  Dan-Tam Daniel TANG ,  Thomas SCHMIDT ,  Michael Klemens MUELLER

    IPC: C11D11/00 ,  C11D3/33 ,  C11D3/28 ,  C11D3/37 ,  C11D3/395

    CPC classification number: C11D11/0082 ,  C11D3/33 ,  C11D3/28 ,  C11D3/3761 ,  C11D11/0023 ,  C11D3/3953

    Abstract: Process for making a powder or granule containing



    (A) at least one chelating agent selected from alkali metal salts of methyl glycine diacetic acid (MGDA) and of iminodisuccinic acid (IDS),
    (B) at least one compound of general formula (I a) or (I b)












    wherein A1 is selected from (CH2)a wherein the variable a is in the range of from 4 to 20,
    e is selected from zero and 1, and
    R1 being the same or different and selected from O—C1-C10-alkyl and C1-C10-alkyl,

    and, optionally,




    (C) at least one homo- or copolymer of (meth)acrylic acid, partially or fully neutralized with alkali,

    said process comprising the steps of


    (a) providing an aqueous solution or slurry containing chelating agent (A) and said compound (B) and, if applicable, (co)polymer (C), with a pH value in the range of from 10 to 12,
    (b) removing most of said water by spray drying or spray granulation.

    PROCESS FOR MANUFACTURING A COMPLEXING AGENT
    8.
    发明申请
    PROCESS FOR MANUFACTURING A COMPLEXING AGENT 有权

    公开(公告)号：US20210094902A1

    公开(公告)日：2021-04-01

    申请号：US16626026

    申请日：2018-06-19

    Applicant: BASF SE

    Inventor： Thomas SCHMIDT ,  Armin STAMM ,  Marta REINOSO GARCIA ,  Verena MORMUL ,  Michael Klemens MUELLER ,  Frank JAEKEL ,  Jeremy T. MANNING

    IPC: C07C227/26

    Abstract: The present invention is directed towards a process for manufacturing a complexing agent, said process comprising the steps of (a) Providing a nitrile according to general formula (I a) or (I b) (formula I a, I b) With M being selected from alkali metal and hydrogen and combinations thereof, (b) Saponification with a total alkali amount of 2.5 to 2.9 mol of alkali metal hydroxide per mole of nitrile according to general formula (I a) or (I b), respectively, and a pH value in the range of from 9.5 to 11.5 at the end of step (b), (c) Adding an amount of alkali metal hydroxide so that the total alkali content is 2.9 to 3.1 moles per mole nitrile according to general formula (I a) or (I b), respectively, and (d) Allowing further conversion. 20

    2,6-BIS-(AMINOMETHYL)PIPERIDINE DERIVATIVES
    10.
    发明申请
    2,6-BIS-(AMINOMETHYL)PIPERIDINE DERIVATIVES 有权
    2,6-BIS-（氨基乙基）哌啶衍生物

    公开(公告)号：US20150353491A1

    公开(公告)日：2015-12-10

    申请号：US14764010

    申请日：2014-01-27

    Applicant: BASF SE

    Inventor： Stephanie JAEGLI ,  Thomas SCHMIDT ,  Alfred OFTRING ,  Alexander PANCHENKO ,  Kirsten DAHMEN ,  Oliver MOLT

    IPC: C07D211/26

    CPC classification number: C07D211/26 ,  C07D211/60

    Abstract: The present invention relates to 2,6-bis(aminomethyl)piperidine derivatives as such (in the following text abbreviated to “2,6-BAMP derivatives”) which are defined by the general formula (I) shown in the following text. In addition, the present invention relates to a process for preparing such 2,6-BAMP derivatives by hydrogenation of the corresponding 2,6-dicyanopiperidine derivatives (hereinafter abbreviated to “2,6-DCP derivatives”) in the presence of a catalyst. The present invention further provides for the use of the 2,6-BAMP derivatives of the invention as hardeners for epoxy resins, as intermediate in the preparation of diisocyanates, which play an important role in the production of polyurethanes, as starters in the preparation of polyetherols and/or as monomers for polyamide production. The present invention further relates to the diisocyanates as such prepared from the 2,6-BAMP derivatives and also the corresponding preparative process.

    Abstract translation: 本发明涉及如下文所示的由通式（I）定义的2,6-二（氨基甲基）哌啶衍生物（以下简称为“2,6-BAMP衍生物”）。 此外，本发明涉及通过在催化剂存在下氢化相应的2,6-二氰基哌啶衍生物（以下简称为“2,6-DCP衍生物”）制备这种2,6-BAMP衍生物的方法。 本发明还提供了本发明的2,6-BAMP衍生物作为环氧树脂的硬化剂的用途，作为制备二异氰酸酯的中间体，其在聚氨酯的生产中起重要作用，作为起始剂在制备 聚乙烯醇和/或作为聚酰胺生产的单体。 本发明还涉及由2,6-BAMP衍生物制备的二异氰酸酯以及相应的制备方法。

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