US 12,291,493 B2
Organic chelated zinc coated fertilizer for better crops and soil health
Rajamalleswaramma Koripelly, Bangalore (IN); Satish Burla, Bangalore (IN); and Samik Gupta, Bangalore (IN)
Assigned to SABIC AGRI-NUTRIENTS COMPANY, Jubail (SA)
Appl. No. 17/312,095
Filed by SABIC AGRI-NUTRIENTS COMPANY, Jubail (SA)
PCT Filed Dec. 9, 2019, PCT No. PCT/IB2019/060571
§ 371(c)(1), (2) Date Jun. 9, 2021,
PCT Pub. No. WO2020/121164, PCT Pub. Date Jun. 18, 2020.
Claims priority of provisional application 62/777,966, filed on Dec. 11, 2018.
Prior Publication US 2022/0024834 A1, Jan. 27, 2022
Int. Cl. C05G 1/00 (2006.01); C05C 9/00 (2006.01); C05F 11/00 (2006.01); C05G 5/35 (2020.01); A01C 21/00 (2006.01)
CPC C05G 1/00 (2013.01) [C05C 9/005 (2013.01); C05F 11/00 (2013.01); C05G 5/35 (2020.02); A01C 21/00 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A coated fertilizer comprising:
a fertilizer core comprising a urea-based fertilizer; and
a coating comprising an organic chelated zinc that covers at least a portion of a surface of the fertilizer core,
wherein the coated fertilizer comprises 0.02 wt. % to 0.5 wt. % of zinc from the organic chelated zinc relative to total weight of the coated fertilizer,
wherein the coating comprising an organic chelated zinc comprises one or more binders having a weight ratio of the one or more binder to the organic chelated zinc of 1:1 to 2:1; and
wherein:
i) an oil based coating is at least partially positioned between the surface of the fertilizer core and the coating comprising an organic chelated zinc; and/or
ii) the coating comprising an organic chelated zinc is a powder coating comprising organic chelated zinc particles with a mean average diameter of 10 to 350 microns.