Reaction products and methods for making and using the same

Patent metadata

Field	Value
Publication number	US-10239799-B2
Application number	US-201615210663-A
Country	US
Kind code	B2
Filing date	Jul 14, 2016
Priority date	Apr 30, 2010
Publication date	Mar 26, 2019
Grant date	Mar 26, 2019

Abstract

Reaction products and methods for making and using the same are provided. The reaction products particularly may include adducts of two or more reactants. The adducts particularly can incorporate a nitrification inhibitor, such as DCD. In particular embodiments, reaction products may be formed from the reaction of formaldehyde, DCD, urea, and an ammonia source. The adducts may be included in agricultural products, including fertilizer compositions and nitrification inhibitor systems. Fertilizer compositions including the adducts can be beneficial for reducing leaching of nitrification inhibitors applied to soil.

First claim

What is claimed is:

1. A method of preparing a nitrification inhibitor system, comprising:
(i) reacting formaldehyde with an ammonia source to form a first mixture;
(ii) reacting the first mixture with DCD to form a second mixture;
(iii) reacting the second mixture with urea to form a third mixture; and
(iv) reacting the third mixture with an ammonia source, so as to form a nitrification inhibitor system comprising an aqueous solution comprising a DCD-formaldehyde adduct, wherein the reactions are performed under basic conditions.

2. The method according to claim 1 , wherein the DCD-formaldehyde adduct further comprises one or both of a triazonyl-formaldehyde-DCD adduct and a urea-formaldehyde-DCD adduct.

3. The method according to claim 2 , further comprising a DCD-formaldehyde oligomer adduct.

4. The method according to claim 2 , wherein the triazonyl-formaldehyde-DCD adduct comprises at least a structure according to Formula 5:

5. The method according to claim 2 , wherein the urea-formaldehyde-DCD adduct comprises at least a structure according to Formula 6:

6. The method according to claim 3 , wherein the DCD-formaldehyde-oligomer adduct comprises at least a structure according to Formula 7:

7. A method of preparing a nitrification inhibitor system, comprising reacting formaldehyde, DCD, urea, and an ammonia source so as to form an aqueous solution comprising a DCD-formaldehyde adduct, wherein said DCD-formaldehyde adduct comprises at least a structure according to Formula 4:

wherein:
X is O or

R1, R2, R3, and R4 are independently selected from the group consisting of:

and wherein, if X═O, at least one of R1, R2, R3, and R4 is:

8. The method according to claim 7 , wherein the DCD-formaldehyde adduct further comprises one or both of a triazonyl-formaldehyde-DCD adduct and a urea-formaldehyde-DCD adduct.

9. The method according to claim 8 , wherein the triazonyl-formaldehyde-DCD adduct comprises at least a structure according to Formula 5:

10. The method according to claim 8 , wherein the urea-formaldehyde-DCD adduct comprises at least a structure according to Formula 6:

11. The method according to claim 7 , further comprising a DCD-formaldehyde oligomer adduct.

12. The method according to claim 11 , wherein the DCD-formaldehyde-oligomer adduct comprises at least a structure according to Formula 7:

13. A method of preparing a nitrification inhibitor system, comprising:
(i) reacting formaldehyde with DCD to form a first mixture; and
(ii) reacting the first mixture with an ammonia source so as to form a nitrification inhibitor system comprising an aqueous solution comprising a DCD-formaldehyde adduct, wherein the reactions are performed under basic conditions.

14. The method according to claim 13 , wherein the DCD-formaldehyde adduct further comprises one or both of a triazonyl-formaldehyde-DCD adduct and a urea-formaldehyde-DCD adduct.

15. The method according to claim 14 , further comprising a DCD-formaldehyde oligomer adduct.

16. The method according to claim 15 , wherein the DCD-formaldehyde-oligomer adduct comprises at least a structure according to Formula 7:

17. The method according to claim 13 , wherein said DCD-formaldehyde adduct comprises at least a structure according to Formula 4:

wherein:
X is O or

R1, R2, R3, and R4 are independently selected from the group consisting of:

and wherein, if X═O, at least one of R1, R2, R3, and R4 is:

18. The method according to claim 14 , wherein the triazonyl-formaldehyde-DCD adduct comprises at least a structure according to Formula 5:

19. The method according to claim 14 , wherein the urea-formaldehyde-DCD adduct comprises at least a structure according to Formula 6:

Assignees

• Koch Agronomic Services Llc

Inventors

• Gabrielson Kurt D
• Epling Mary L

Classifications

• C05C3/00 Primary

  Fertilisers containing other salts of ammonia or ammonia itself, e.g. gas liquor · CPC title

• C05G5/23

  Solutions · CPC title

• C05G3/90 Primary

  for affecting the nitrification of ammonium compounds or urea in the soil · CPC title

• C05C9/00

  Fertilisers containing urea or urea compounds · CPC title

• C05C9/02

  containing urea-formaldehyde condensates · CPC title