Chemistry: fertilizers – Processes and products – Organic material-containing
Patent
1983-03-07
1985-01-22
Schor, Kenneth M.
Chemistry: fertilizers
Processes and products
Organic material-containing
71 6402, 71 6407, 71 6412, 427212, 564 63, C05C 900
Patent
active
044949766
ABSTRACT:
Metal oxides are applied to the surface of urea particles and chemically bonded to the urea by a heat-induced reaction. The product of this reaction is a free-flowing, relatively nonhygroscopic nitrogenous chemical fertilizer. By selecting metal oxides corresponding to a particular soil deficiency, beneficial micronutrients can be supplied simultaneously with nitrogen. Other materials, such as elemental sulfur, can be incorporated into the metal oxides prior to coating or can be liquefied and applied as a separate additional coating to the metal oxide-urea particles. In another embodiment, fertilizer particles are coated with metal oxides, covered with molten urea, and heated to induce a reaction. The formed reaction product remains as a layer on the exterior of the particle.
REFERENCES:
patent: 2074880 (1937-03-01), Whittaker et al.
patent: 3070435 (1962-12-01), Reusser et al.
patent: 3423199 (1969-01-01), Philan et al.
patent: 3533776 (1970-10-01), Coates et al.
patent: 3617239 (1971-11-01), Kanica et al.
patent: 3684476 (1972-08-01), Wadsted
patent: 3867124 (1975-02-01), Church
patent: 3936501 (1976-02-01), Greidinger
patent: 3941578 (1976-03-01), Tucker et al.
patent: 3976467 (1976-08-01), Seferian et al.
patent: 3981713 (1976-09-01), Tucker et al.
patent: 4026695 (1977-05-01), Young
patent: 4026696 (1977-05-01), Young
patent: 4028088 (1977-06-01), Young et al.
patent: 4073633 (1978-02-01), Young
patent: 4249930 (1981-02-01), Atkisson
Chem. Abstracts 50:2432a, 1956, Cosma.
C. W. Whittaker, F. O. Lundstrom, and S. B. Hendricks, "Reaction Between Urea and Gypsum", Ind. and Eng. Chem. 25 (11), pp. 1280-1282, (1933).
Japan Patent 7739014, as abstracted in Central Patents Index, Section E, Derwent Publications, Ltd., London, Week Y43, (Dec. 14, 1977).
Franks Robert A.
Sandford Dean
Schor Kenneth M.
Union Oil Company of California
Wirzbicki Gregory F.
LandOfFree
Fertilizers containing nitrogen and micronutrients does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fertilizers containing nitrogen and micronutrients, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fertilizers containing nitrogen and micronutrients will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-565122