公开(公告)号：US20230025816A1

公开(公告)日：2023-01-26

申请号：US17784573

申请日：2020-12-01

Applicant: BASF SE

Inventor： Michael SCHOENHERR ,  Kati SCHMIDT ,  Johannes Felix HAUS ,  Michael Klemens MUELLER ,  Frank JAEKEL ,  Marta REINOSO GARCIA ,  Volker KLOCK

IPC: C11D3/20 ,  C11D1/52 ,  C11D3/37 ,  C11D11/02

Abstract: Process for making a granule containing (A) at least one chelating agent selected from alkali metal salts of methyl glycine diacetic acid (MGDA) and of iminodisuccinic acid (IDS), and, optionally, (B) 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, if applicable, (co)polymer (B), (b) removing most of said water by spray granulation in a fluidized bed, (c) treating the resultant granule in a vessel of which at least one part rotates around a horizontal axis and wherein said vessel is selected from paddle mixers, free-fall mixers and plough share mixers.

公开(公告)号：US20180065919A1

公开(公告)日：2018-03-08

申请号：US15554492

申请日：2016-03-01

Applicant: BASF SE

Inventor： Constanze FRANZKE ,  Frank JAEKEL ,  Carsten SUELING

IPC: C07C227/18 ,  C07C229/16 ,  C11D3/33 ,  C11D3/00

CPC classification number: C07C227/18 ,  C07B2200/07 ,  C07C229/16 ,  C11D3/0047 ,  C11D3/33

Abstract: The present invention is directed towards mixtures comprising (A) 90 to 99.9% by weight of a mixture of L- and D-enantiomers of methyl glycine diacetic acid (MGDA) or its respective mono-, di- or trialkali metal or mono-, di- or triammonium salts, said mixture containing predominantly the respective L-enantiomer with an enantiomeric excess (ee) in the range of from 10 to 99%, and (B) in total 0.1 to 10% by weight of the diacetic acid derivative of at least one amino acid selected from valine, leucine, isoleucine, and tyrosine, as free acids or respective mono-, di- or trialkali metal or mono-, di- or triammonium salts, percentages referring to the sum from (A) and (B).

公开(公告)号：US20230062299A1

公开(公告)日：2023-03-02

申请号：US17786303

申请日：2020-12-04

Applicant: BASF SE

Inventor： Markus HARTMANN ,  Michael Klemens MUELLER ,  Frank JAEKEL ,  Carsten SUELING

IPC: C11D17/06 ,  C11D11/02 ,  C11D3/395 ,  C11D3/20 ,  C11D3/37 ,  C11D3/12 ,  C11D11/00

Abstract: The present invention is directed towards a process for making a powder or granule containing (A) at least one alkali metal salt of citric acid, and at least one additive selected from (B) at least one (co)polymer containing carboxylic acid groups, partially neutralized with alkali, in a weight ratio of (A):(B) of from 5:1 up to 100:1, wherein said powder or granule contains at least 75% by weight of citrate (A), said process comprising the steps of (a) mixing the at least one alkali metal salt of citric acid (A) and the at least one (co)polymer (B) in the presence of water, (b) removing most of said water by spray-drying or spray granulation using a gas with an inlet temperature of at least 125° C.

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

公开(公告)号：US20190119611A1

公开(公告)日：2019-04-25

申请号：US16309339

申请日：2017-06-01

Applicant: BASF SE

Inventor： Michael Klemens MUELLER ,  Armin STAMM ,  Frank JAEKEL ,  Carsten SUELING

IPC: C11D11/00 ,  C11D3/33 ,  C11D11/02

Abstract: Process for making a powder or granule containing at least one chelating agent selected from alkali metal salts of methyl glycine diacetic acid (MGDA) and glutamic acid diacetate (GLDA) and iminodisuccinic acid (IDS), said process comprising the steps of (a) introducing an aqueous solution or aqueous slurry of the respective chelating agent (A) into a spray-dryer or spray-granulator, and removing most of said water by spray-drying or spray granulation using a gas with an inlet temperature of 125 to 250° C., (b) withdrawing powder or granules, respectively, from the spray-dryer or spray-granulator, respectively, (c) separating off fmes from said powder or granules, wherein said fmes have a maximum particle diameter of 350 (d) separating off lumps from said powder or granules, wherein said lumps have a particle diameter of 1,500 μm or more, (e) milling said lumps to a maximum particle diameter of 500 μm, (f) re-introducing said fmes from step (c) and milled lumps from step (e) into the spray-dryer or spray-granulator, wherein the share of fines is in the range of from 0.5 to 20% by weight of the total chelating agent (A) withdrawn in step (b) and the share of milled lumps is in the range of from 5 to 60% by weight of the total chelating agent (A) withdrawn in step (b).

公开(公告)号：US20180355285A1

公开(公告)日：2018-12-13

申请号：US16060148

申请日：2016-12-01

Applicant: BASF SE

Inventor： Frank JAEKEL ,  Michael Klemens MUELLER

IPC: C11D3/33 ,  C11D11/00 ,  C11D11/02 ,  C11D7/32 ,  C11D3/20 ,  C11D3/04

CPC classification number: C11D3/33 ,  C07C227/40 ,  C11D3/046 ,  C11D3/2075 ,  C11D7/3245 ,  C11D11/0082 ,  C11D11/02 ,  C07C229/16

Abstract: Process for manufacturing granules of at least one alkali metal salt of aminopolycarboxylic acid (A), comprising the steps of (a) providing an aqueous slurry of alkali metal salt of aminopolycarboxylic acid (A), (b) maintaining said aqueous slurry at a temperature in the range of from 50 to 90° C. over a period of time in the range of from 2 to 180 hours, (c) spray granulating said slurry with a gas inlet temperature of at least 150° C.

公开(公告)号：US20240294463A1

公开(公告)日：2024-09-05

申请号：US18268115

申请日：2021-12-08

Applicant: BASF SE

Inventor： Michael Klemens MUELLER ,  Matthias VOGES ,  Markus HARTMANN ,  Frank JAEKEL ,  Astrid SCHMIDT

IPC: C07C227/44

CPC classification number: C07C227/44

Abstract: Process for making a solid alkali metal salt (A) of an aminocarboxylate complexing agent, said process comprising the steps of



(a) providing a 40 to 80% by weight aqueous solution or slurry comprising salt (A),
(b) optionally, heating said slurry or solution to a temperature in the range of from 50 to 150° C.,
(c) introducing the slurry or solution from step (a) or, if applicable, step (b) into an essentially horizontal cylindrical drying apparatus containing a stirring element that rotates around an essentially horizontal axis and that is charged with solid particles of salt (A), and
(d) removing most of the water by evaporation,
(e) removing solid salt (A) as granule.

公开(公告)号：US20230092844A1

公开(公告)日：2023-03-23

申请号：US17800758

申请日：2021-02-11

Applicant: BASF SE

Inventor： Matthias VOGES ,  Lothar SEIDEMANN ,  Anika RITTER ,  Astrid SCHMIDT ,  Markus HARTMANN ,  Hartmut KOENIG ,  Frank JAEKEL ,  Rou Hua CHUA ,  Michael Klemens MUELLER

IPC: C07C227/42

Abstract: Process for making solid methylglycine diacetate (MGDA) alkali metal salt (A), said process comprising the steps of (a) providing a 40 to 60% by weight aqueous solution of said salt (A) having a temperature in the range of from 50 to 90° C., (b) crystallizing salt (A), (c) removing said crystalline salt (A) from the mother liquor by filtration, and (d) subjecting the water containing filter cake from step (c) to an extrusion step.

公开(公告)号：US20220154112A1

公开(公告)日：2022-05-19

申请号：US17599766

申请日：2020-03-20

Applicant: BASF SE

Inventor： Frank JAEKEL ,  Michael Klemens MUELLER ,  Astrid SCHMIDT

IPC: C11D17/06 ,  C11D11/02 ,  C11D11/00 ,  C11D3/08 ,  C11D3/33 ,  C11D3/37 ,  C11D3/39

Abstract: Process 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 glutamic acid diacetate (GLDA) and of iminodisuccinic acid (IDS), (B) at least one alkali metal silicate, and (C) at least one (co)polymer containing carboxylic acid group, partially neutralized with alkali, in a weight ratio of (A):[(B)+(C)] of from 20:1 up to 100:1, wherein said powder or granule contains at least 75% by weight of chelating agent (A), said process comprising the steps of (a) mixing the at least one chelating agent (A) and the at least one alkali metal silicate (B) and the at least one (co)polymer (C) in the presence of water, (b) removing most of said water by spray-drying or spray granulation using a gas with an inlet temperature of at least 125° C.

公开(公告)号：US20210317392A1

公开(公告)日：2021-10-14

申请号：US17280066

申请日：2019-09-16

Applicant: BASF SE

Inventor： Frank JAEKEL ,  Astrid SCHMIDT ,  Michael Klemens MUELLER

IPC: C11D11/00 ,  C11D17/06 ,  C11D3/33 ,  C11D1/04 ,  C11D3/39 ,  B01J2/04 ,  B01J2/16

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 glutamic acid diacetate (GLDA) and of iminodisuccinic acid (IDS), (B) at least one alkali metal salt of a C10-C20 fatty acid, in a weight ratio of (A):(B) of from 40:1 up to 1,000:1, wherein said powder or granule contains at least 75% by weight of chelating agent (A), said process comprising the steps of (c) mixing the at least one chelating agent (A) and the at least one alkali metal salt of fatty acid (B) in the presence of water, (d) removing most of said water by spray-drying or by spray granulation using a gas with an inlet temperature of at least 125° C.