Neutral metal alkanoate micronutrient solutions and method...

C - Chemistry – Metallurgy – 05 – C

Patent

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C05C 3/00 (2006.01) C05D 9/02 (2006.01) C05G 3/00 (2006.01)

Patent

CA 2260001

A substantially neutral metal alkanoate solution suitable for application of the constituent micronutrient metal to agricultural crops or acreage where such crops are to be grown, is disclosed. Alkanoates having from 2 to 6 carbon atoms are preferred, with acetates most preferred. Metals selected from the group consisting of boron, calcium, copper, iron, magnesium, manganese, molybdenum, potassium, sodium and zinc are preferred, with zinc particularly preferred. The compositions of the present invention remain soluble at and below freezing temperatures for extending periods, and exhibit a high degree of miscibility in fertilizers. A method of manufacturing the compositions of the present invention is disclosed, in which a metal oxide is dispersed in water, ammonia is added to the dispersion, and acid is added to the basic dispersion to solubilize and substantially neutralize the dispersion and create an aqueous micronutrient solution.

L'invention concerne une solution sensiblement neutre d'alcanoates de métal dont le microélément métallique constitutif est destiné à être appliqué sur des cultures ou des surfaces agricoles sur lesquelles lesdites cultures sont destinées à pousser. On utilise de préférence des alcanoates ayant 2 à 6 atomes de carbone, et idéalement des acétates. On utilise de préférence des métaux choisis dans le groupe constitué de bore, calcium, cuivre, fer, magnésium, manganèse, molybdène, potassium, sodium et zinc, le zinc étant idéal. Les compositions de l'invention restent solubles à des températures de gel ou au-dessous, sur des périodes prolongées, et présentent un degré de miscibilité élevé dans les engrais. L'invention se rapporte également à un procédé de fabrication desdites compositions, qui consiste à disperser dans l'eau un oxyde métallique, à ajouter de l'ammoniaque à la dispersion, et à ajouter de l'acide à la dispersion basique de sorte que ladite dispersion soit solubilisée, sensiblement neutralisée et qu'une solution aqueuse de microéléments soit produite.

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