Fertilizer composition comprising dispersions or solutions of nu

Details Fertilizer composition comprising dispersions or solutions of nu Fertilizer composition comprising dispersions or solutions of nu

1993-07-23

1995-08-29

Lander, Ferris

Chemistry: fertilizers

Processes and products

Organic material-containing

71 29, 71 30, 71 6404, 71 6408, 71 641, C05C 100, C05C 400, C05C 1100

Patent

active

054456630

ABSTRACT:
The present invention relates to a fertilizer composition comprising solution or dispersion of nutrient compounds and method for its manufacture. The solution/dispersion constitutes the discontinuous phase of a water-in-oil type (w-i-o) emulsion having a volume phase ratio, discontinuous phase: total volume in the range of 0.80-0.95. The fertilizer composition may additionally contain 0-60 weight % solid nutrient salts and/or urea. The oil or hydrocarbon component of the w-i-o emulsion comprises mineral, vegetable or animal oils, wax or mixture of these, and the emulsion comprises at least one w-i-o emulsifier. The hydrocarbon component may also contain 0.5-6 weight % of elastomer, preferably polyisobutylene. The method comprises dissolving or dispersing the nutrient compounds at a temperature of 5.degree.-15.degree. C. above the crystallization temperature of the mixture, and then adding while stirring to a mixture of emulsifier and hydrocarbon, said latter mixture having been heated to about the same temperature as the former mixture. The combined mixtures are exposed to intensified stirring for 0.3-3 minutes.

REFERENCES:
patent: 3661550 (1972-05-01), Downer et al.
patent: 3982920 (1976-09-01), Cross et al.
patent: 4443242 (1984-04-01), Fox
patent: 4578105 (1986-03-01), Moore
patent: 4997642 (1991-03-01), Curtis et al.
Phillips, Jr. et al., U.S. Defensive Publication T969,003, Apr. 4, 1978.

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