US 11,999,670 B2
Delivery of bioactive molecules in coatings or surface layers of organically enhanced inorganic fertilizers
Jeffrey C. Burnham, Marco Island, FL (US); and Sanford A. Siegel, Bradenton, FL (US)
Assigned to PROFILE PRODUCTS LLC, Buffalo Grove, IL (US)
Filed by Profile Products LLC, Buffalo Grove, IL (US)
Filed on Nov. 13, 2019, as Appl. No. 16/682,885.
Claims priority of provisional application 62/767,172, filed on Nov. 14, 2018.
Prior Publication US 2020/0148605 A1, May 14, 2020
Int. Cl. C05F 3/00 (2006.01); C05B 15/00 (2006.01); C05C 3/00 (2006.01); C05G 3/60 (2020.01); C05G 5/12 (2020.01); C05G 5/30 (2020.01)
CPC C05G 5/37 (2020.02) [C05B 15/00 (2013.01); C05C 3/005 (2013.01); C05F 3/00 (2013.01); C05G 3/60 (2020.02); C05G 5/12 (2020.02); C05G 5/30 (2020.02); C05G 5/38 (2020.02)] 20 Claims
OG exemplary drawing
 
1. A method of coating hydrolyzed fertilizer granules comprising:
contacting organic material with sulfuric acid to hydrolyze the organic material forming a fluidized acidic mix;
ammoniating the fluidized acidic mix;
spraying the ammoniated fluidized acidic mix in a granulator forming hydrolyzed fertilizer granules having a matrix of inorganic nutrients and charged organic amphoteric molecules;
drying and cooling the hydrolyzed fertilizer granules; and
contacting the hydrolyzed fertilizer granules with a coating agent containing a plant growth regulator and reactive chemical groups, wherein the plant growth regulator chemically reacts with the charged organic amphoteric molecules of surfaces and/or interior portions of the matrix, forming coated fertilizer granules with embedded plant growth regulators.