Préparation de gluconates métalliques

Preparation of metal gluconates

Herstellung von Metallgluconaten

Abstract

A metal gluconate is prepared from a supersaturated solution of the gluconate in an aqueous solution having a pH between about 4 and about 7, the degree of supersaturation with respect to the metal gluconate being of at least about 1.3, by introducing seed crystals into the solution and removing water at a temperature in excess of 50°C to crystallize the dissolved metal gluconate, while maintaining the supersaturation. The resulting crystals are agitated to further crystallize dissolved metal gluconate and the crystallized gluconate is then recovered.

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Patent Citations (3)

    Publication numberPublication dateAssigneeTitle
    US-1942660-AJanuary 09, 1934Pfizer Charles & CoProcess for the preparation of gluconic acid and its lactones
    US-2701811-AFebruary 08, 1955Poor & CoReaction product of zinc oxide and aldonic acids
    US-3907640-ASeptember 23, 1975Grain Processing CorpProduction of alkali metal gluconates

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Cited By (4)

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    DE-4410347-A1September 28, 1995Rene LeutwylerVerfahren zum Entfernen von anorganischen Metallverbindungen aus Lösungen
    FR-2815343-A1April 19, 2002Roquette FreresNouvelle composition d'acide gluconique, concentree, stable et pauvre en sodium
    US-6448210-B1September 10, 2002Johnsondiversey, Inc.Liquid automatic dishwashing composition with glassware protection
    WO-0232846-A1April 25, 2002Roquette FreresNouvelle composition d'acide gluconique, concentree, stable et pauvre en sodium