US 12,234,197 B1
Coated granular fertilizers, methods of manufacture thereof, and uses thereof
Ganesh Kannan, Sugar Land, TX (US); Christina Posada, Sugar Land, TX (US); James Haigh, Sugar Land, TX (US); Travis Harper, Sugar Land, TX (US); and Sabeshan Kanagalingam, Riyadh (SA)
Assigned to SABIC AGRI-NUTRIENTS COMPANY, Jubail (SA)
Filed by SABIC AGRI-NUTRIENTS COMPANY, Jubail (SA)
Filed on Sep. 20, 2021, as Appl. No. 17/479,822.
Application 17/479,822 is a continuation of application No. 15/776,275, granted, now 11,124,463, previously published as PCT/US2016/061486, filed on Nov. 11, 2016.
Claims priority of provisional application 62/415,825, filed on Nov. 1, 2016.
Claims priority of provisional application 62/255,669, filed on Nov. 16, 2015.
This patent is subject to a terminal disclaimer.
Int. Cl. C05G 5/30 (2020.01); C05C 9/00 (2006.01); C05G 5/12 (2020.01)
CPC C05G 5/38 (2020.02) [C05C 9/005 (2013.01); C05G 5/12 (2020.02); C05G 5/37 (2020.02)] 18 Claims
OG exemplary drawing
 
1. A process of manufacturing a coated fertilizer comprising a fertilizer granule and a coating disposed on a surface of the fertilizer granule, wherein the coating comprises a biodegradable polymer and a wax, wherein the polymer forms a coating comprising cracks and/or pinholes on the surface of the fertilizer granule, and wherein the wax seals at least a majority of the cracks and/or pinholes, the process comprising:
contacting the fertilizer granule and/or a wax coating with the polymer to form a polymer coating comprising cracks and/or pinholes on the surface of the fertilizer granule; and
contacting the polymer coating and/or fertilizer granule with the wax to form a wax and polymer coated fertilizer granule wherein the wax seals at least a majority of the cracks and/or pinholes,
wherein the polymer comprises poly(butylene succinate), wherein the coating comprises at least a portion of the wax within the coating, and wherein at least a portion of the wax is located between the fertilizer granule and at least a portion of the polymer.
 
10. A coated fertilizer, comprising:
a fertilizer granule; and
a coating disposed on a surface of the fertilizer granule, wherein the coating comprises a biodegradable polymer and a wax, wherein the polymer comprises poly(butylene succinate), wherein the polymer forms a coating comprising cracks and/or pinholes on the surface of the fertilizer granule, wherein the wax seals at least a majority of the cracks and/or pinholes, wherein the coating comprises at least a portion of the wax within the coating, and wherein at least a portion of the wax is located between the fertilizer granule and at least a portion of the polymer.