Quick drying polymeric coating
AssigneeSpecialty Fertilizer Products, LLC
InventorsJohn Larry Sanders, Grigory Mazo, Jacob Mazo
Life of this patent
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Abstract
Improved agriculturally useful products are provided, including solid materials such as nitrogenous fertilizers (e.g., urea), together with a polycarboxylated polymer selected from the group consisting of a salts of copolymers containing individual quantities of maleic and itaconic moieties. The polymer composition also includes from about 10-60% by weight of an organic drying agent such as a lower alcohol which enhances the quick drying properties thereof. The compositions may also include an amount of boron, and bimodal vinylic polymer made up of quantities of high and low molecular weight (MW) vinylic polymers such as PVA.
Claims25
A fertilizer product for application to soil, comprising:
- a quantity of a solid fertilizer;
- the dried residue of a polymer-containing composition on said fertilizer, said polymer-containing composition including a substantially water soluble copolymer containing individual quantities of maleic and itaconic moieties, water, an organic compound drying agent, and an amount of boron as boric acid,
- said fertilizer product prepared by initially formulating said aqueous polymer-containing composition, then applying the formulated polymer-containing composition to said fertilizer, and thereafter allowing said drying agent and a substantial part of the water present in the composition to evaporate to leave said dried residue of said polymer-containing composition on said fertilizer, so that the fertilizer product does not include said drying agent or water to any substantial degree,
- the amount of boric acid in the composition operable to reduce the time required to achieve said evaporation of said drying agent and water, as compared with the composition free of boric acid,
- whereby the fertilizer product as applied to soil does not have any substantial quantities of the drying agent and water which formed a part of the polymer-containing composition initially applied to said solid fertilizer.
A fertilizer product, comprising:
- a quantity of solid fertilizer;
- and
- a coating on the surface of said solid fertilizer comprising a water soluble polymer containing individual quantities of maleic and itaconic moieties, and an amount of boron as boric acid.
Dependencies are inferred from the claim text.