Anti-caking fertilizer compositions

Patent metadata

Field	Value
Publication number	US-11155503-B2
Application number	US-201816612635-A
Country	US
Kind code	B2
Filing date	May 17, 2018
Priority date	May 17, 2017
Publication date	Oct 26, 2021
Grant date	Oct 26, 2021

Abstract

A particulate fertilizer coating composition or a coated fertilizer containing a solid acidic particulate material and a solid basic particulate material. The coating composition and coated fertilizer are each stable, chemical compatible with other fertilizers, and/or are abrasion resistant.

First claim

The invention claimed is:

1. A fertilizer composition comprising a fertilizer particle having at least a portion of its surface coated with a particulate coating composition comprising a solid acidic particulate material and a solid basic particulate material, wherein the solid acidic particulate material comprises a phosphate-based fertilizer selected from a solid particulate single super phosphate (SSP), a solid particulate triple super phosphate (TSP), or a blend of solid particulate SSP and solid particulate TSP.

2. The fertilizer composition of claim 1 , wherein the fertilizer particle is a urea-based fertilizer particle or a phosphate-based fertilizer particle.

3. The fertilizer composition of claim 2 , wherein the fertilizer particle comprises a single superphosphate (SSP), a triple super-phosphate (TSP), or a combination thereof.

4. The fertilizer composition of claim 1 , wherein the solid acidic particulate material further comprises at least one of a biostimulant, a calcium lignosulfonate, or a combination thereof.

5. The fertilizer composition of claim 1 , wherein the solid acidic particulate material comprises a blend of solid particulate SSP and solid particulate TSP.

6. The fertilizer composition of claim 1 , wherein the solid basic particulate material comprises a metal oxide.

7. The fertilizer composition of claim 6 , wherein the metal oxide is MgO, ZnO, CuO, or blends thereof.

8. The fertilizer composition of claim 1 , wherein:
the fertilizer particle is a urea particle;
the solid acidic particulate material comprises SSP or TSP, or a combination thereof; and
the solid basic particulate material comprises MgO.

9. The fertilizer composition of claim 1 , comprising less than 10%, 1 to 5%, or 2 to 3.5% of the solid basic particulate material based on the total weight of the coated fertilizer.

10. The fertilizer composition of claim 1 , wherein the particulate coating composition comprises the solid acidic particulate material and the solid basic particulate material at a ratio by weight of 1:100 to 7:10, 1:100 to 2:3, 1:7 to 2:3, or 1:7 to 1:4 in the coating.

11. The fertilizer composition of claim 1 , wherein the particulate coating composition is a single layer coating comprising a blend of the solid acidic particulate material and the solid basic particulate material.

12. The fertilizer composition claim 1 , wherein the fertilizer particle includes a first coating layer comprising the solid acidic particulate material and a second coating layer comprising the solid basic particulate material such that at least a portion of the first coating layer is positioned between the surface of the fertilizer particle and the second coating layer.

13. The fertilizer composition of claim 1 , comprising less than 0.0001 wt. % of a salt formed from the solid acidic particulate material and solid basic particulate material by weight of the fertilizer composition.

14. The fertilizer composition of claim 1 , further comprising at least one micronutrient in at least one of the fertilizer particle or particulate coating composition, in an amount of 0.5 to 10 wt. %, 1 to 5 wt. %, or 2 to 4 wt. %, based on the total weight of the coated fertilizer.

15. The fertilizer composition of claim 1 , wherein the composition is a blended fertilizer composition comprising a plurality of the coated fertilizer particles and a plurality of uncoated fertilizer particles.

16. A method of fertilizing, the method comprising applying the fertilizer composition of claim 1 to at least one of a soil, an organism, a liquid carrier, a liquid solvent, or a combination thereof.

Assignees

• Sabic Global Technologies Bv

Inventors

• Sharma Yogesh Omprakash
• Bag Nilkamal
• Rao Boddu Srinivasa
• Gupta Samik
• Kiiski Harri Tapio
• Saif Sahali-Al

Classifications

• C05D5/00

  Fertilisers containing magnesium (C05D7/00 takes precedence) · CPC title

• C05D9/02

  containing trace elements · CPC title

• C05B1/02 Primary

  Superphosphates · CPC title

• C05G3/20

  for preventing the fertilisers being reduced to powder; Anti-dusting additives · CPC title

• C05C9/005

  Post-treatment · CPC title