COMPOSITIONS OF UREA FORMALDEHYDE PARTICLES AND METHODS OF MAKING THEREOF

• US 20160075609A1
• Filed: 11/19/2015
• Published: 03/17/2016
• Est. Priority Date: 08/15/2012
• Status: Active Grant

• Current Assignee: KOCH Agronomic Services LLC (KOCH Industries Incorporated)
• Original Assignee: KOCH Agronomic Services LLC (KOCH Industries Incorporated)
• Inventors: Gabrielson, Kurt D., Wertz, Stacey L., Bobeck, Drew R., Sutton, Allen R.
• Granted Patent: US 9,682,894 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B32B 27/42 comprising condensation resins of aldehydes, e.g. with phenols, ureas or melamines
• CPC Class Codes: C05C 1/00 Ammonium nitrate fertilisers
• CPC Class Codes: C05C 9/00 Fertilisers containing urea or urea compounds
• CPC Class Codes: C05C 9/02 containing urea-formaldehyde condensates
• CPC Class Codes: C05G 3/90 for affecting the nitrification of ammonium compounds or urea in the soil
• CPC Class Codes: C05G 5/12 Granules or flakes
• CPC Class Codes: C05G 5/20 Liquid fertilisers layered or coated C05G5/30; incorporated into a matrix C05G5/40
• CPC Class Codes: C05G 5/30 Layered or coated, e.g. dust-preventing coatings
• CPC Class Codes: C05G 5/37 layered or coated with a polymer
• 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

An improved composition comprising substantial spherical UFP particles and an active agent, such as NBPT, and optionally other components is used as an additive for liquid and solid fertilizers, typically containing urea. Methods of making the compositions and their use are also disclosed.

Claims

1. A composition comprising a combination of substantially solid pieces of N-(n-butyl)thiophosphoric triamide (NBPT) and urea-formaldehyde polymer (UFP) particles, wherein the pieces of NBPT and the UFP particles are substantially adhered together.

2. The composition according to claim 1, wherein the UFP particles are substantially adhered to outer surfaces of the pieces of NBPT.

3. The composition according to claim 1, wherein the UFP particles are substantially coating the pieces of NBPT.

4. The composition according to claim 1, wherein the composition comprises about 30% to about 70% by weight of the pieces of NBPT and about 70% to about 30% by weight of the UFP particles based on the total weight of the composition.

5. The composition according to claim 1, wherein the composition further comprises a nitrification inhibitor.

6. The composition according to claim 5, wherein the nitrification inhibitor is selected from the group consisting of:

dicyandiamide (DCD);

2-chloro-6-trichloromethylpyridine (nitrapyrin);

3,4-dimethylpyrazole phosphate (DMPP);

3-methylpyrazole (MP);

1-H-1,2,4-triazole. (TZ);

3-methylpyrazole-1-carboxamide (CMP);

4-amino-1,2,4-triazole (AT, ATC);

3-amino-1,2,4-triazole;

2-cyanimino-4-hydroxy-6-methylpyrimidine (CP);

2-ethylpyridine;

ammonium thiosulfate (ATS);

sodium thiosulfate (ST);

thiophosphoryl triamide;

thiourea (TU);

guanylthiourea (GTU);

ammonium polycarboxylate;

ethylene urea;

hydroquinone;

phenylacetylene;

phenylphosphoro diamidate;

neemcake;

calcium carbide;

5-ethoxy-3-trichloromethyl-1,2,4-thiadiazol (etridiazol, terraole);

2-amino-4-chloro-6-methylpyrimidine (AM);

1-mercapto-1,2,4-triazole (MT);

2-mercaptobenzothiazole (MBT);

2-sulfanilamidothiazole (ST);

5-amino-1,2,4-thiasiazole;

2,4-diamino-6-trichloromethyl-s-triazine (CL-1580);

N-2,5-dichlorophenyl succinanilic acid (DCS);

nitroaniline;

chloroaniline;

salts thereof; and

combinations thereof.

7. The composition according to claim 6, wherein the nitrification inhibitor is DCD.

8. The composition according to claim 6, wherein the nitrification inhibitor is nitrapyrin.

9. The composition according to claim 6, wherein the composition comprises about 1% to about 60% by weight of the pieces of NBPT, about 1% to about 35% by weight of the UFP particles, and about 5% to about 98% by weight of the nitrification inhibitor based on the total weight of the composition.

10. The composition according to claim 1, wherein the composition further comprises a component selected from the group consisting of a conditioner, a dye, xanthan gum, and combinations thereof.

11. The composition according to claim 10, wherein the composition comprises a conditioner selected from the group consisting of tricalcium phosphate, sodium bicarbonate, sodium ferricyanide, potassium ferricyanide, bone phosphate, sodium silicate, silicon dioxide, calcium silicate, talcum powder, bentonite, calcium aluminum silicate, stearic acid, sodium aluminosilicate, polyacrylate powder, and combinations thereof.

12. The composition according to claim 1, wherein the UFP particles have an average particle diameter of about 0.05 microns to about 250 microns.

13. The composition according to claim 12, wherein the UFP particles have an average particle diameter of about 0.1 microns to about 150 microns.

14. The composition according to claim 12, wherein the UFP particles have a size distribution such that about 1% to about 20% by weight of the UFP particles have an average particle diameter of about 0.05 microns to about 5 microns.

15. The composition according to claim 12, wherein about 1% to about 20% by weight of the UFP particles have an average particle diameter of about 0.1 microns to about 1 micron, and about 80% to about 99% by weight of the UFP particles have an average particle diameter that is greater than 1 micron.

16. The composition according to claim 1, wherein the composition further comprises urea.

17. The composition according to claim 16, wherein the composition comprises about 90% to about 99% by weight of urea and about 0.02 to about 0.5% by weight of the pieces of NBPT based upon the overall weight of the composition.

18. The composition according to claim 16, wherein the composition further comprises a nitrification inhibitor selected from the group consisting of:

dicyandiamide (DCD);

2-chloro-6-trichloromethylpyridine (nitrapyrin);

3,4-dimethylpyrazole phosphate (DMPP);

3-methylpyrazole (MP);

1-H-1,2,4-triazole (TZ);

3-methylpyrazole-1-carboxamide (CMP);

4-amino-1,2,4-triazole (AT, ATC);

3-amino-1,2,4-triazole;

2-cyanimino-4-hydroxy-6-methylpyrimidine (CP);

2-ethylpyridine;

ammonium thiosulfate (ATS);

sodium thiosulfate (ST);

thiophosphoryl triamide;

thiourea (TU);

guanylthiourea (GTU);

ammonium polycarboxylate;

ethylene urea;

hydroquinone;

phenylacetylene;

phenylphosphoro diamidate;

neemcake;

calcium carbide;

5-ethoxy-3-trichloromethyl-1,2,4-thiadiazol (etridiazol, terraole);

2-amino-4-chloro-6-methylpyrimidine (AM);

1-mercapto-1,2,4-triazole (MT);

2-mercaptobenzothiazole (MBT);

2-sulfanilamidothiazole (ST);

5-amino-1,2,4-thiasiazole;

2,4-diamino-6-trichloromethyl-s-triazine (CL-1580);

N-2,5-dichlorophenyl succinanilic acid (DCS);

nitroaniline;

chloroaniline;

salts thereof; and

combinations thereof.

19. The composition according to claim 1, wherein the composition is in the form of a granular fertilizer such that the granules of the fertilizer have an average diameter of about 0.8 to about 4.8 millimeters.

20. The composition according to claim 1, wherein the composition further comprises an aqueous solution of urea ammonium nitrate (UAN).

21. The composition according to claim 1, wherein the composition comprises about 24% to about 32% by weight of urea, about 34% to about 42% by weight of ammonium nitrate, and about 0.01% to about 0.4% by weight of the pieces of NBPT based on the overall weight of the composition.

22. The composition according to claim 21, wherein the composition further comprises a nitrification inhibitor selected from the group consisting of:

dicyandiamide (DCD);

2-chloro-6-trichloromethylpyridine (nitrapyrin);

3,4-dimethylpyrazole phosphate (DMPP);

3-methylpyrazole (MP);

1-H-1,2,4-triazole (TZ);

3-methylpyrazole-1-carboxamide (CMP);

4-amino-1,2,4-triazole (AT, ATC);

3-amino-1,2,4-triazole;

2-cyanimino-4-hydroxy-6-methylpyrimidine (CP);

2-ethylpyridine;

ammonium thiosulfate (ATS);

sodium thiosulfate (ST);

thiophosphoryl triamide;

thiourea (TU);

guanylthiourea (GTU);

ammonium polycarboxylate;

ethylene urea;

hydroquinone;

phenylacetylene;

phenylphosphoro diamidate;

neemcake;

calcium carbide;

5-ethoxy-3-trichloromethyl-1,2,4-thiadiazol (etridiazol, terraole);

2-amino-4-chloro-6-methylpyrimidine (AM);

1-mercapto-1,2,4-triazole (MT);

2-mercaptobenzothiazole (MBT);

2-sulfanilamidothiazole (ST);

5-amino-1,2,4-thiasiazole;

2,4-diamino-6-trichloromethyl-s-triazine (CL-1580);

N-2,5-dichlorophenyl succinanilic acid (DCS);

nitroaniline;

chloroaniline;

salts thereof; and

combinations thereof.

23. The composition according to claim 22, wherein the composition comprises about 0.01% to about 2.0% by weight of the nitrification inhibitor based on the overall weight of the composition.

24. The composition according to claim 1, wherein the pieces of NBPT comprise crystalline NBPT.

25. The composition according to claim 1, wherein the pieces of NBPT comprise amorphous NBPT.

26. A method of forming an agricultural composition, the method comprising blending substantially solid pieces of N-(n-butyl) thiophosphoric triamide (NBPT) with urea-formaldehyde polymer (UFP) particles under conditions such that the UFP particles become substantially adhered to outer surfaces of the pieces of NBPT.