METHOD OF FORMING A CHELATING COMPOSITION

METHOD OF FORMING A CHELATING COMPOSITION

A method includes combining monosodium glutamate and/or glutamic acid with formaldehyde to form a first combination; adding hydrogen cyanide to form a second combination comprising a monosodium salt of glutamic acid diacetonitrile, a cyclic GLMN, and a sodium salt of glutamic acid N- mono acetonitri...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: BOONSTRA, Tjerk Oedse, HEUS, Martin, BANG, Edwin Rudolf Antony
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Beschreibung
Zusammenfassung:A method includes combining monosodium glutamate and/or glutamic acid with formaldehyde to form a first combination; adding hydrogen cyanide to form a second combination comprising a monosodium salt of glutamic acid diacetonitrile, a cyclic GLMN, and a sodium salt of glutamic acid N- mono acetonitrile, maintaining a temperature of the second combination at less than about 16°C and a pH of less than about 7; converting nitrile groups to carboxylate groups thereby forming a chelating composition comprising water and at least about 47 weight percent of the tetrasodium salt of GLDA, wherein a reaction yield is at least about 91%.