QUICK DRYING POLYMERIC COATING

摘要

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.

主权项

1. A method of forming a fertilizer composite for application to soil, comprising the steps of:
initially applying a polymer-containing composition onto a quantity of solid fertilizer, said polymer-containing composition including a substantially water soluble copolymer containing individual quantities of maleic and itaconic moieties, water, and an organic compound drying agent; and thereafter allowing said drying agent and a substantial part of the water present in the composite to evaporate from said fertilizer to leave the dried residue of said polymer-containing composition on the fertilizer, so that the composite does not include said drying agent or water to any substantial degree, whereby said composite as applied to soil does not have any substantial presence of the drying agent and water which formed a part of the polymer-containing composition initially applied to said solid product.