Patent ID: 9174885
Filing Date: 2015-11-03
Classification: C05C,C05G

Abstract:
1. A nitrogen-based fertilizer composition, comprising: a first component mixed with a second component wherein said first component includes urea and said second component comprises a nitrate-based fertilizer, said nitrogen-based fertilizer being selected from a group consisting of ammonium nitrate, calcium ammonium nitrate and mixtures thereof; a coating of an agriculturally-compatible material is provided on (a) said first component, (b) said second component or (c) said first and second component, said agriculturally compatible material being selected from a group consisting of gypsum, calcium sulfate hemi-hydrate, calcium carbonate, calcium nitrate, soda lime, potassium sulfate, magnesium sulfate, bentonite, silica gel, potassium phosphate, potassium nitrate, potassium chloride, sodium sulfate, ammonium sulfate, sodium silicate, dolomite, anhydrite, sulfur, polyurethane, isobutylidine diurea, ureaform, methylene ureas, urea-formaldehyde polymers, other coating polymers, and mixtures thereof; and an odorant having a low-odor threshold, wherein said odorant is natural, nontoxic, non-harmful to agriculture and pleasant-smelling to humans, and said odorant is detectable by smell without any processing of said nitrogen-based fertilizer composition, said odorant being selected from a group of materials consisting of menthol, methylbutylacetate, D-limonene, ethyl vanillin, ethylmethylbutyrate, L-carvone, ethyl cininamate, methyl salicylate, esters, methyl esters, ethyl esters, acetates, methyl acetates, ethyl acetates, cyclic terpenes, isoamylacetate, octyl acetate, terpenoids, and mixtures thereof; and wherein said coating prevents absorption of water by said mixture and prevents direct, physical contact between the urea in said first component and the nitrate-based fertilizer in said second component.