Non-phytotoxic micronutrient compositions

Details Non-phytotoxic micronutrient compositions Non-phytotoxic micronutrient compositions

1977-03-11

1978-11-14

Lander, Ferris H.

Chemistry: fertilizers

Processes and products

Organic material-containing

2604299, 424356, 252 38, 2604381, 260439R, 260429R, C05F 1100

Patent

active

041253957

ABSTRACT:
A micronutrient composition intended for application to the foliage or branches of plants is described as containing oil-soluble overbased copper, molybdenum, zinc, manganese or iron naphthenates in a horticultural non-phytotoxic spray oil. The composition is made metathetically by mixing a solution of naphthenic acids, having an acid value ranging from about 90 to 280 mg.KOH/g., in a light aromatic solvent, with a methanolic sodium hydroxide solution and a methanolic solution of the desired metal salt of an inorganic acid; distilling off the methanol, the water and some of the aromatic solvent, adding the spray oil and removing the rest of the aromatic solvent. The ratio of equivalents of metal to naphthenate in these salts ranges from 1.1 to 20.
The naphthenates are in the form of micelles with each micelle having an empirical formula represented by MR.sub.2.xM(OH).sub.2.yMO, wherein R is the naphthenate radical, M is the divalent micronutrient metal and (x + y) is the overbasicity ranging from 0.1 to 19. It is believed the micelles consist of a core containing the excess basicity enclosed in an outer layer of neutral metal naphthenates.

REFERENCES:
patent: 2865956 (1958-12-01), Ellis et al.
patent: 3661550 (1972-05-01), Downer et al.

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