	US 12,246,998 B2
	Nutrient complexing compositions
Robert J. Littmann, Peoria, IL (US)
Assigned to Woodford Group LLC, Metamora, IL (US)
Filed by Woodford Group LLC, Metamora, IL (US)
Filed on Mar. 4, 2020, as Appl. No. 16/809,039.
Application 16/809,039 is a continuation of application No. 15/724,599, filed on Oct. 4, 2017, granted, now 10,633,298.
Application 15/724,599 is a continuation of application No. 15/092,079, filed on Apr. 6, 2016, abandoned.
Claims priority of provisional application 62/145,871, filed on Apr. 10, 2015.
Prior Publication US 2020/0407284 A1, Dec. 31, 2020
Int. Cl. C05F 11/00 (2006.01); A01N 25/00 (2006.01); A01N 43/713 (2006.01); A01N 43/90 (2006.01); C05C 1/00 (2006.01); C05C 11/00 (2006.01); C05D 9/00 (2006.01); C07C 211/14 (2006.01); C07C 211/63 (2006.01); C07C 215/50 (2006.01); C07C 279/02 (2006.01)

CPC C05F 11/00 (2013.01) [A01N 25/00 (2013.01); A01N 43/713 (2013.01); A01N 43/90 (2013.01); C05C 1/00 (2013.01); C05C 11/00 (2013.01); C05D 9/00 (2013.01); C07C 211/14 (2013.01); C07C 211/63 (2013.01); C07C 215/50 (2013.01); C07C 279/02 (2013.01)]

13 Claims

1. A composition for use at a crop planting site, the composition comprising:

a specific ion complexing agent (SICA) coupled to a substrate via a linker molecule,

wherein said SICA forms a coordination complex with, and reversibly retains, a desired compound,

wherein the SICA is selected from the group consisting of 1,5-diazabicyclo[4.3.0]non-5-ene, 3,6,9,17,20,23-hexaazatricyclo[23.3.1.111,15]-triaconta-1 (29), 11,13,15 (30),25,27-hexaene, and 7-[2-Hydroxy-3-(4-phenylpiperazin-1-yl)-propyl]-1, 3-dimethyl-8-(2-morpholin-4-ylethylamino)-3, 7-dihydropurine-2,6-dione, and

wherein said desired compound is selected from the group consisting of a nitrate, nitrite, ammonium, phosphate, sulfate, and combinations thereof.