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公开(公告)号：US20240301453A1
公开(公告)日：2024-09-12
申请号：US18268177
申请日：2021-12-20
申请人： BASF SE
IPC分类号： C12P13/06 , C07C227/12 , C12N9/90
CPC分类号： C12P13/06 , C07C227/12 , C12N9/90 , C12Y501/01001
摘要： 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.
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公开(公告)号：US20230135390A1
公开(公告)日：2023-05-04
申请号：US17908819
申请日：2021-02-25
申请人： BASF SE
IPC分类号： C07C253/10
摘要： 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.
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公开(公告)号：US20200010395A1
公开(公告)日：2020-01-09
申请号：US16460402
申请日：2019-07-02
申请人： BASF SE
发明人： Dagmar Pascale KUNSMANN-KEITEL , Georg Heinrich GROSCH , Jan-Dirk ARNDT , Gauthier Luc Maruice AVERLANT , Wolf-Steffen WEISSKER , Marcus Georg SCHREMS , Dan-Tam Daniel TANG
摘要： Method for preparing a β-hydroxyketone having 4 to 8 carbon atoms by reacting formaldehyde with a branched or unbranched dialkyl ketone having 3 to 7 carbon atoms in the liquid phase in a reactor in the presence of a basic component at a temperature of 50 to 150° C. and a pressure of 0.2 to 10 MPa abs, in which (a) a trialkylamine having 1 to 4 carbon atoms per alkyl group is used as basic component and the reaction (b) is carried out in the presence of 1 to 25% by weight water, based on the liquid phase, and (c) at a molar ratio of trialkylamine to formaldehyde in the liquid phase of from 1 to 5.
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公开(公告)号：US20230143616A1
公开(公告)日：2023-05-11
申请号：US17911741
申请日：2021-03-12
申请人： BASF SE
发明人： Marta REINOSO GARCIA , Sylke HAREMZA , Tile GIESHOFF , Dan-Tam Daniel TANG , Thomas SCHMIDT , Michael Klemens MUELLER
CPC分类号： C11D11/0082 , C11D3/33 , C11D3/28 , C11D3/3761 , C11D11/0023 , C11D3/3953
摘要： 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.-
公开(公告)号：US20200010394A1
公开(公告)日：2020-01-09
申请号：US16460327
申请日：2019-07-02
申请人： BASF SE
发明人： Dagmar Pascale KUNSMANN-KEITEL , Georg Heinrich GROSCH , Jan-Dirk ARNDT , Gauthier Luc Maruice AVERLANT , Wolf-Steffen WEISSKER , Marcus Georg SCHREMS , Dan-Tam Daniel TANG
摘要： Method for preparing 1-hydroxy-2-methyl-3-pentanone (I) by reacting formaldehyde with diethyl ketone in a reactor in the presence of water and a basic component at a temperature of 50 to 150° C. and a pressure of 0.2 to 10 MPa abs, in which the basic component used is a trialkylamine from the group comprising trimethylamine, N,N-dimethylethylamine, N,N-diethylmethylamine, triethylamine, N,N-dimethyl-n-propylamine, N-ethyl-N-methyl-n-propylamine, N,N-dimethylisopropylamine, N-ethyl-N-methylisopropylamine, N,N-dimethyl-n-butylamine, N,N-dimethylisobutylamine and N,N-dimethyl-sec-butylamine, and from the reaction mixture obtained, trialkylamine as low boiler and a bottom product comprising 1-hydroxy-2-methyl-3-pentanone (I) as high boiler are separated in a distillation apparatus, wherein the distillation apparatus is operated at a top pressure of 0.2 to 1 MPa abs.
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