FERTILIZER COMPOSITION AND METHODS OF MAKING AND USING SAME

• US 20180208513A1
• Filed: 07/18/2016
• Published: 07/26/2018
• Est. Priority Date: 07/20/2015
• Status: Active Grant

• Current Assignee: Sabic Agri-Nutrients Company
• Original Assignee: SABIC Global Technologies BV (Government of Saudi Arabia)
• Inventors: KANAGALINGAM, Sabeshan, HEGDE, Ravi, SRINIVASARAO, Madduri, KORIPELLY, Rajamalleswaramma, GUPTA, Samik, BAG, Nilkamal, BURLA, Satish, GURUMALLAPPA, Yoganand
• Granted Patent: US 10,689,306 B2
• Time in Patent Office: Days
• CPC Class Codes: C05C 9/005 Post-treatment
• CPC Class Codes: C05D 3/02 from limestone, calcium carbonate, calcium hydrate, slaked lime, calcium oxide, waste calcium products
• CPC Class Codes: C05F 11/00 Other organic fertilisers
• CPC Class Codes: C05G 3/00 Mixtures of one or more fertilisers with additives not having a specially fertilising activity
• CPC Class Codes: C05G 3/90 for affecting the nitrification of ammonium compounds or urea in the soil
• CPC Class Codes: C05G 5/30 Layered or coated, e.g. dust-preventing coatings
• CPC Class Codes: C05G 5/40 Fertilisers incorporated into a matrix
• CPC Class Codes: C07F 9/224 Phosphorus triamides
• CPC Class Codes: Y02P 60/21 Dinitrogen oxide [N2O], e.g. using aquaponics, hydroponics or efficiency measures

Abstract

In accordance with the present invention, disclosed herein is a fertilizer core particle and fertilizer granule. The fertilizer core particle has one or more fertilizer additives, one or more binders comprising a wax, and one or more pH buffering agents, and wherein the core particle comprises from about 10 wt % to about 99 wt % of the one or more binders comprising a wax.

Claims

1. A fertilizer core particle having an outer surface and comprising one or more fertilizer additives, one or more binders comprising a wax, and one or more pH buffering agents, and wherein the core particle comprises from about 10 wt % to about 99 wt % of the one or more binders comprising a wax.

2. The fertilizer core particle of claim 1, wherein the one or more fertilizer additives comprise a urease inhibitor or a nitrification inhibitor, or a combination thereof.

3. The fertilizer core particle of claim 2, wherein the urease inhibitor comprises N-(n-butyl) thiophosphoric triamide (NBTPT) or phenyl phosphorodiamidate (PPDA), or a combination thereof, and wherein the nitrification inhibitor comprises 3,4-dimethylpyrazole phosphate (DMPP), thio-urea (TU), dicyandiamide (DCD), 2-Chloro-6-(trichloromethyl)-pyridine (Nitrapyrin), 5-Ethoxy-3-trichloromethyl-1, 2, 4-thiadiazol (Terrazole), 2-Amino-4-chloro-6-methyl-pyrimidine (AM), 2-Mercaptobenzothiazole (MBT), or 2-Sulfanimalamidothiazole (ST), or a combination thereof.

4. The fertilizer core particle of claim 1, wherein the one or more pH buffering agents comprise CaCO₃, MgO, KH₂PO₄, or NaHCO₃, or a combination thereof.

5. The fertilizer core particle of claim 1, wherein the core particle comprises from about 60 wt % to about 90 wt % of the one or more binders comprising a wax.

6. The fertilizer core particle of claim 1, wherein the core particle comprises from about 5 wt % to about 60 wt % of the one or more pH buffering agent.

7. The fertilizer core particle of claim 1, wherein the one or more binders comprising a wax comprise a high melt wax.

8. The fertilizer core particle of claim 1, wherein the one or more binders comprising a wax comprise a low melt wax.

9. The fertilizer core particle of claim 1, wherein the fertilizer core particle comprises from 20 wt % to 50 wt % of a low melt wax or high melt wax or combination thereof, from 20 wt % to 50 wt % of a binder selected from bleached wheat flour, or starch, or a filler comprising rice husk, or a combination thereof, from 10 wt % to 30 wt % of DCD, and from more than 0 wt % to 5 wt % of NBTPT, and from about 15 wt % to about 50 wt % of the pH buffering agent.

10. The fertilizer core particle of claim 1, wherein the fertilizer core particle comprises a filler comprising rice husk.

11. A fertilizer granule comprising the fertilizer core of claim 1, wherein the fertilizer granule further comprises a first nitrogen containing fertilizer composition in contact with the outer surface of the fertilizer core particle.

12. The fertilizer granule of claim 11, wherein an outer shell comprising a first nitrogen containing fertilizer composition at least partially surrounds the fertilizer core particle.

13. The fertilizer granule of claim 11, wherein the first nitrogen containing fertilizer composition comprises urea, ammonium nitrate, ammonium sulfate, diammonium phosphate, monoammonium phosphate, urea-formaldehyde, ammonium chloride, or potassium nitrate, or a combination thereof.

14. The fertilizer granule of claim 12, wherein the outer shell substantially comprises urea.

15. The fertilizer granule of claim 11, wherein the core particle comprises from 20 wt % to 50 wt % of a low melt wax or high melt wax or combination thereof, from 20 wt % to 50 wt % of a binder selected from bleached wheat flour, rice husk, or starch, or a combination thereof, from 10 wt % to 30 wt % of DCD, from more than 0 wt % to 5 wt % of NBTPT, and from about 15 wt % to about 50 wt % of the pH buffering agent, and wherein an outer shell substantially comprising urea at least partially surrounds the core.

16. A kit comprising

a) the fertilizer core particle of claim 1;

and

b) a fertilizer composition.

17. A method for preparing the fertilizer core particle of claim 1 comprising the step of:

a) extruding a mixture comprising one or more fertilizer additives, one or more binders comprising a wax, and one or more pH buffering agents, and wherein the mixture comprises from about 10 wt % to about 99 wt % of the one or more binders, thereby forming the fertilizer core particle.

18. The method of claim 17, wherein the one or more binders comprising a wax comprise a high melt wax and the temperature of the extrusion is performed from about 80°

C. to about 150°

C.

19. The method of claim 17, wherein the one or more binders comprising a wax comprise a high melt wax or a low melt wax, or a combination thereof.

20. A method for preparing a fertilizer granule of claim 11 comprising the steps of:

a) providing a core particle comprising one or more fertilizer additives, one or more binders comprising a wax, and one or more pH buffering agents, and wherein the core particle comprises from about 10 wt % to about 99 wt % of the one or more binders comprising a wax; and

b) granulating the core particle with a first nitrogen containing fertilizer composition, thereby forming a fertilizer granule.