Herbicide formulation

Patent metadata

Field	Value
Publication number	US-9468213-B2
Application number	US-201414243474-A
Country	US
Kind code	B2
Filing date	Apr 2, 2014
Priority date	Feb 20, 2008
Publication date	Oct 18, 2016
Grant date	Oct 18, 2016

Abstract

The present invention relates, inter alia, to a novel herbicide formulation comprising:— (a) an aqueous phase; (b) an HPPD inhibitor in suspension in the aqueous phase; (c) an encapsulated chloroacetamide or an isoxazoline herbicide in suspension in the aqueous phase; (d) glyphosate and/or glufosinate or an agrochemically acceptable salt thereof, in solution in the aqueous phase. The invention further relates to a process for the preparation of an herbicide formulation of the invention and to a process for the control of unwanted vegetation.

First claim

The invention claimed is:

1. An herbicide formulation comprising:
(a) an aqueous phase;
(b) an 4-hydroxyphenylpyruvate dioxygenase (HPPD) inhibitor in suspension in the aqueous phase, wherein the 4-hydroxyphenylpyruvate dioxygenase (HPPD) inhibitor is a triketone;
(c) an encapsulated chloroacetamide and/or an isoxazoline herbicide in suspension in the aqueous phase;
(d) glyphosate and/or glufosinate, or an agrochemically acceptable salt thereof, in solution in the aqueous phase; and
(e) toluene sulfonic acid.

2. An herbicide formulation according to claim 1 , which is a pre-mix concentrate comprising:
(a) an aqueous phase;
(b) 10-600 g/l HPPD inhibitor in suspension in the aqueous phase;
(c) 10-6000 g/l chloroacetamide and/or an isoxazoline herbicide which is encapsulated and in suspension in the aqueous phase;
(d) 10-3000 g/l glyphosate and/or glufosinate, or an agrochemically acceptable salt thereof, in solution in the aqueous phase; and
(e) a structuring agent; and
(f) toluene sulfonic acid.

3. An herbicide formulation according to claim 1 , wherein the triketone is mesotrione or tembotrione.

4. An herbicide formulation according to claim 1 , wherein the chloroacetamide is present and is selected from the group consisting of alachlor, acetochlor, dimethenamid, metolachlor and S-metolachlor.

5. An herbicide formulation according to claim 4 , wherein the chloroacetamide is S-metolachlor.

6. An herbicide formulation according to claim 1 , wherein component (d) is potassium glyphosate.

7. A process for the preparation of an herbicide formulation according to claim 2 , said process comprising the steps of:
(a) separately preparing (i) an HPPD inhibitor mill base, (ii) a chloroacetamide or an isoxazoline herbicide capsule suspension and (iii) a glyphosate and/or glufosinate soluble concentrate;
(b) combining components (i), (ii) and (iii) above whilst mixing;
(c) adding a structuring agent whilst still mixing; and
(d) optionally adjusting the pH to from about 3 to 7.

8. A process for the control of unwanted vegetation, said process comprising the application of a herbicidally effective amount of a herbicide formulation according to claim 1 to a locus of the unwanted vegetation.

9. An herbicide formulation according to claim 1 , wherein the triketone is mesotrione.

10. An herbicide formulation according to claim 9 , wherein the chloroacetamide is present and is selected from the group consisting of alachlor, acetochlor, dimethenamid, metolachlor and S-metolachlor.

11. An herbicide formulation according to claim 10 , wherein component (d) is potassium glyphosate.

12. An herbicide formulation comprising:
(a) an aqueous phase;
(b) mesotrione;
(c) an encapsulated chloroacetamide in suspension in the aqueous phase, wherein the chloroacetamide is metolachlor, S-metolachlor, or acetochlor;
(d) glyphosate or an agrochemically acceptable salt thereof, in solution in the aqueous phase; and
(e) toluene sulfonic acid in an appropriate amount to provide a pH of from about 3 to about 7.

13. An herbicide formulation according to claim 12 , wherein the chloroacetamide is S-metolachlor.

14. An herbicide formulation according to claim 13 , wherein component (d) is potassium glyphosate.

15. A process for the preparation of an herbicide formulation according to claim 12 , said process comprising the steps of:
(a) separately preparing (i) a mesotrione mill base, (ii) an encapsulated chloroacetamide suspension and (iii) a glyphosate soluble concentrate;
(b) combining components (i), (ii) and (iii) above whilst mixing;
(c) adding a structuring agent whilst still mixing; and
(d) adjusting the pH to from about 3 to about 7 via the toluene sulfonic acid.

16. A process for the control of unwanted vegetation, said process comprising the application of a herbicidally effective amount of a herbicide formulation according to claim 12 to a locus of the unwanted vegetation.

17. A process for the control of unwanted vegetation, said process comprising the application of a herbicidally effective amount of a herbicide formulation according to claim 13 to a locus of the unwanted vegetation.

18. A process for the control of unwanted vegetation, said process comprising the application of a herbicidally effective amount of a herbicide formulation according to claim 14 to a locus of the unwanted vegetation.

Assignees

• Nelson Alan Frederick
• Syngenta Crop Protection Llc

Inventors

• Nelson Alan Frederick

Classifications

• A01N43/56

  1,2-Diazoles; Hydrogenated 1,2-diazoles · CPC title

• A01N37/18

  containing the group —CO—N<, e.g. carboxylic acid amides or imides; Thio analogues thereof · CPC title

• A01N57/20 Primary

  containing acyclic or cycloaliphatic radicals · CPC title

• A01N43/80

  five-membered rings with one nitrogen atom and either one oxygen atom or one sulfur atom in positions 1,2 · CPC title

• A01N43/10

  with sulfur as the ring hetero atom · CPC title