MY163172A - Process for the preparation of aqueous solutions of methylglycine-n,n-diacetic acid trialkali metal salts - Google Patents

Process for the preparation of aqueous solutions of methylglycine-n,n-diacetic acid trialkali metal salts

Info

Publication number
MY163172A
MY163172A MYPI2013003272A MYPI2013003272A MY163172A MY 163172 A MY163172 A MY 163172A MY PI2013003272 A MYPI2013003272 A MY PI2013003272A MY PI2013003272 A MYPI2013003272 A MY PI2013003272A MY 163172 A MY163172 A MY 163172A
Authority
MY
Malaysia
Prior art keywords
methylglycine
alanine
trialkali metal
diacetic acid
acid
Prior art date
Application number
MYPI2013003272A
Inventor
Alfred Oftring
Gerold Braun
Arnulf Lauterbach
Original Assignee
Basf Se
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Basf Se filed Critical Basf Se
Publication of MY163172A publication Critical patent/MY163172A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C227/00—Preparation of compounds containing amino and carboxyl groups bound to the same carbon skeleton
    • C07C227/26—Preparation of compounds containing amino and carboxyl groups bound to the same carbon skeleton from compounds containing carboxyl groups by reaction with HCN, or a salt thereof, and amines, or from aminonitriles

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

A PROCESS FOR PREPARING AN AQUEOUS SOLUTION OF A METHYLGLYCINE-N,N-DIACETIC ACID TRIALKALI METAL SALT AT A HIGH YIELD AND PURITY BY STRECKER SYNTHESIS, THE PROCESS INCLUDING: REACTING AN AQUEOUS SOLUTION CONTAINING a-ALANINE WITH FORMALDEHYDE AND HYDROCYANIC ACID, TO OBTAIN a-ALANINE-N,N-DIACETONITRILE IN ONE REACTION UNIT; AND SAPONIFICATION OF THE a-ALANINE-N,N-DIACETONITRILE WITH A BASE, TO OBTAIN THE METHYLGLYCINE-N,N-DIACETIC ACID TRIALKALI METAL SALT, WHEREIN THE a-ALANINE IS PARTIALLY NEUTRALIZED AND THE ADDITION OF FORMALDEHYDE AND HYDROCYANIC ACID ARE CONTROLLED SUCH THAT A CONCENTRATION OF FREE HYDROCYANIC ACID IN THE LIQUID REACTION MIXTURE AT ANY TIME IS LIMITED SUCH THAT SECONDARY REACTIONS THAT PRODUCE FORMALDEHYDE CYANOHYDRIN, CONSECUTIVE REACTIONS OF FORMALDEHYDE CYANOHYDRIN, AND THE POLYMERIZATION OF HYDROCYANIC ACID, ONLY OCCUR INSOFAR AS THE SPECIFICATION REQUIREMENTS, SUCH AS NITRILOTRIACETIC ACID CONTENT AND COLOR, FOR METHYLGLYCINE-N,N-DIACETIC ACID TRIALKALI METAL SALTS ARE OBSERVED.
MYPI2013003272A 2011-04-04 2012-03-20 Process for the preparation of aqueous solutions of methylglycine-n,n-diacetic acid trialkali metal salts MY163172A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP11161045 2011-04-04
EP12154201 2012-02-07

Publications (1)

Publication Number Publication Date
MY163172A true MY163172A (en) 2017-08-15

Family

ID=45908028

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI2013003272A MY163172A (en) 2011-04-04 2012-03-20 Process for the preparation of aqueous solutions of methylglycine-n,n-diacetic acid trialkali metal salts

Country Status (8)

Country Link
EP (1) EP2694468B1 (en)
JP (1) JP5914632B2 (en)
CN (1) CN103476741B (en)
BR (1) BR112013023846A2 (en)
MX (1) MX336483B (en)
MY (1) MY163172A (en)
RU (1) RU2598850C2 (en)
WO (1) WO2012136474A1 (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9227915B2 (en) 2011-05-03 2016-01-05 Basf Se Process for the preparation of a crystalline L-MGDA trialkali metal salt
US8772527B2 (en) 2012-04-27 2014-07-08 Basf Se Process for isomerization of cis-2-pentenenitrile to 3-pentenenitriles
EP2774913B1 (en) * 2013-03-08 2015-09-09 Basf Se Process for working up an aqueous solution or slurry of a complexing agent
ES2646288T3 (en) * 2013-09-13 2017-12-13 Basf Se Mixtures of enantiomers and process for making such mixtures
CN103819505B (en) * 2014-02-21 2016-06-29 重庆紫光化工股份有限公司 A kind of method improving PMIDA yield
CN103980136B (en) * 2014-05-29 2016-05-11 重庆紫光化工股份有限公司 The discoloration method of the aminocarboxylate feed liquid being made through alkaline hydrolysis by organic nitrile compound
MX2017004987A (en) * 2014-10-17 2017-07-19 Basf Se Container comprising a detergent composition containing mgda.
WO2016058875A1 (en) * 2014-10-17 2016-04-21 Basf Se Solutions of trialkali metal salts of aminocarboxylic acids, their manufacture and use
CA2970432A1 (en) * 2014-12-23 2016-06-30 Akzo Nobel Chemicals International B.V. Crystals of alanine n-acetic acid precursors, process to prepare them and their use
KR20170127493A (en) * 2015-03-11 2017-11-21 바스프 에스이 Mixtures of chelating agents, and process for making such mixtures
ES2881309T3 (en) * 2015-03-12 2021-11-29 Basf Se Process for preparing mixtures of enantiomers, and mixtures of enantiomers
CN109912440A (en) * 2018-11-23 2019-06-21 南京华狮新材料有限公司 Amino acid type chelated dose of one kind and its method for making in scale and application
CN109369428A (en) * 2018-12-26 2019-02-22 山东泰和水处理科技股份有限公司 A kind of preparation method of green chelating agent methylglycine diacetate trisodium
CN114634420B (en) * 2020-12-16 2023-09-19 万华化学集团股份有限公司 A method for continuously preparing methylglycine-N,N-diacetic acid trialkali metal salt

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2057682A5 (en) 1969-08-26 1971-05-21 Grace W R Ltd
US3733355A (en) 1970-07-28 1973-05-15 Hooker Chemical Corp Production of nitrilotriacetic acid and the analogs therefor
DE2503582C3 (en) * 1975-01-29 1979-10-04 Basf Ag, 6700 Ludwigshafen Process for the preparation of N-alkylglycine nitriles
US5194657A (en) * 1991-01-04 1993-03-16 E. I. Du Pont De Nemours And Company Process for the preparation of aminonitriles
DE4319935A1 (en) * 1993-06-16 1994-12-22 Basf Ag Use of glycine-N, N-diacetic acid derivatives as complexing agents for alkaline earth and heavy metal ions
DE19518987A1 (en) * 1995-05-29 1996-12-05 Basf Ag Process for the preparation of glycine-N, N-diacetic acid derivatives by reacting glycine derivatives or their precursors with formaldehyde and alkali metal cyanide in an aqueous alkaline medium
DE19518986A1 (en) * 1995-05-29 1996-12-05 Basf Ag Process for the preparation of glycine-N, N-diacetic acid derivatives by reacting glycine derivatives or their precursors with formaldehyde and hydrogen cyanide or iminodiacetonitrile or imindodiacetic acid with corresponding aldehydes and hydrogen cyanide in an aqueous acidic medium
JPH1087582A (en) * 1996-07-22 1998-04-07 Nitto Chem Ind Co Ltd Stabilized monoaminocarboxylic acids
DE102005021055A1 (en) * 2005-05-06 2006-11-09 Basf Ag Process for the preparation of low-by-product methylglycine-N, N-diacetic acid trialkali metal salts

Also Published As

Publication number Publication date
RU2013148613A (en) 2015-05-10
RU2598850C2 (en) 2016-09-27
CN103476741B (en) 2015-07-01
EP2694468A1 (en) 2014-02-12
WO2012136474A1 (en) 2012-10-11
EP2694468B1 (en) 2017-01-18
JP5914632B2 (en) 2016-05-11
MX2013011402A (en) 2013-11-01
MX336483B (en) 2016-01-21
CN103476741A (en) 2013-12-25
BR112013023846A2 (en) 2020-11-10
JP2014516352A (en) 2014-07-10

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