Low volatility herbicidal compositions

Patent metadata

Field	Value
Publication number	US-10212933-B2
Application number	US-201715653772-A
Country	US
Kind code	B2
Filing date	Jul 19, 2017
Priority date	Nov 5, 2012
Publication date	Feb 26, 2019
Grant date	Feb 26, 2019

Abstract

The present invention relates generally low volatility herbicidal compositions comprising at least one auxin herbicide and at least one monocarboxylic acid, or monocarboxylate thereof. The invention further relates generally to methods for preparing and using such low volatility herbicidal compositions, including methods for controlling auxin-susceptible plant growth on agricultural and non-agricultural lands.

First claim

What is claimed is:

1. A herbicidal composition concentrate comprising:
dicamba, or an agriculturally acceptable salt or ester thereof; and
a potassium or sodium monocarboxylate of a monocarboxylic acid;
wherein:
the concentrate comprises an amount of the potassium or sodium monocarboxylate sufficient to reduce the concentration of volatilized dicamba in the vapor phase surrounding a diluted version of the concentrate relative to the concentration of volatilized dicamba in the vapor phase surrounding an otherwise identical diluted version of the concentrate lacking the potassium or sodium monocarboxylate.

2. The herbicidal composition concentrate of claim 1 , wherein the concentrate comprises an agriculturally acceptable salt of dicamba selected from the group consisting of N,N-bis-[aminopropyl]methylamine, monoethanolamine, dimethylamine, isopropylamine, diglycolamine, potassium, and sodium salts, and combinations thereof.

3. The herbicidal composition concentrate of claim 1 , wherein the concentrate comprises the diglycolamine salt of dicamba.

4. The herbicidal composition concentrate of claim 1 , wherein the monocarboxylic acid is selected from the group consisting of formic acid, acetic acid, propionic acid, and benzoic acid.

5. The herbicidal composition concentrate of claim 1 , wherein the concentrate comprises the potassium or sodium monocarboxylate salt, in whole or in part, in dissociated form, the monocarboxylate salt selected from the group consisting of formate salts, acetate salts, propionate salts, and benzoate salts of the monocarboxylic acid.

6. The herbicidal composition concentrate of claim 1 , wherein the concentrate comprises acetic acid, or an agriculturally acceptable salt thereof.

7. The herbicidal composition concentrate of claim 1 , wherein the concentrate comprises an additive selected from the group consisting of surfactants, drift reduction agents, safeners, solubility enhancing agents, thickening agents, flow enhancers, foam-moderating agents, freeze protectants, UV protectants, preservatives, antimicrobials, and/or other additives that are necessary or desirable to improve the performance, crop safety, or handling of the composition.

8. The herbicidal composition concentrate of claim 1 , wherein the concentrate comprises less than about 10 ppm of ammonium sulfate.

9. The herbicidal composition concentrate of claim 1 , wherein the concentrate contains dicamba at a total loading of from about 120 to about 600 g acid equivalent (a.e.)/L.

10. The herbicidal composition concentrate of claim 1 , wherein the concentrate contains dicamba at a total loading of from about 300 g a.e./L to about 600 g a.e./L.

11. The herbicidal composition concentrate of claim 1 , wherein the concentrate contains dicamba at a total loading of from about 350 g a.e./L to about 600 g a.e./L.

12. The herbicidal composition concentrate of claim 1 , wherein the concentrate contains dicamba at a total loading of from about 400 g a.e./L to about 600 g a.e./L.

13. The herbicidal composition concentrate of claim 1 , wherein the concentrate contains dicamba at a total loading of from about 450 g a.e./L to about 600 g a.e./L.

14. The herbicidal composition concentrate of claim 1 , wherein the concentrate contains dicamba at a total loading of from about 500 g a.e./L to about 600 g a.e./L.

15. The herbicidal composition concentrate of claim 1 , wherein the composition is a liquid concentrate containing a total amount (acid equivalent weight) of dicamba from about 5% to about 75% by weight of the concentrate.

16. The herbicidal composition concentrate of claim 1 , wherein the composition is a liquid concentrate containing a total amount (acid equivalent weight) of dicamba from about 25% to about 35% by weight of the concentrate.

17. The herbicidal composition concentrate of claim 1 , wherein the composition is a dry concentrate containing a total amount (acid equivalent weight) of dicamba from about 40% to about 90% by weight of the concentrate.

18. The herbicidal composition concentrate of claim 1 , wherein the molar ratio of dicamba to the potassium or sodium monocarboxylate, is from about 1:10 to about 10:1.

19. The herbicidal composition concentrate of claim 1 , wherein the molar ratio of dicamba to the potassium or sodium monocarboxylate, is from about 2:1 to about 1:2.

20. The herbicidal composition concentrate of claim 1 , wherein the concentration of the potassium or sodium monocarboxylate, is from about 1 gram (acid equivalent weight)/L to about 250 grams (acid equivalent weight)/L.

21. The herbicidal composition concentrate of claim 1 , wherein the concentrate comprises an amount (acid equivalent weight) of the potassium or sodium monocarboxylate, of from about 1% to about 20% by weight of the concentrate.

22. The herbicidal composition concentrate of claim 1 , wherein the concentrate comprises an amount (acid equivalent weight) of the potassium or sodium monocarboxylate, of from about 2% to about 15% by weight of the concentrate.

23. The herbicidal composition concentrate of claim 1 , wherein the concentrate is a liquid concentrate and comprises an amount (acid equivalent weight) of the monocarboxylate, of from about 2% to about 10% by weight of the concentrate.

24. The herbicidal composition concentrate of claim 1 , wherein the concentrate is a dry concentrate and comprises an amount (acid equivalent weight) of the monocarboxylate, of from about 5% to about 15% by weight of the concentrate.

25. The herbicidal composition concentrate of claim 1 , wherein the composition comprises:
acetic acid, or an agriculturally acceptable salt thereof;
wherein the molar ratio of acetic acid, or agriculturally acceptable salt thereof, to dicamba, or agriculturally acceptable salt or ester thereof, is from about 1:10 to about 10:1; and/or
wherein the acid equivalent weight ratio of acetic acid, or agriculturally acceptable salt thereof, to dicamba, or agriculturally acceptable salt or ester thereof, is from about 1:10 to about 5:1; and/or
wherein the concentrate contains an amount (acid equivalent weight) of the acetic acid, or agriculturally acceptable salt thereof, from about 0.25% to about 25% by weight of the concentrate; and/or
wherein the concentration of the acetic acid, or agriculturally acceptable salt thereof, is from about 1 gram (acid equivalent weight)/L to about 250 grams (acid equivalent weight)/L; and/or
wherein the concentration of dicamba, or an agriculturally acceptable salt or ester thereof, is from about 120 grams (acid equivalent weight)/L to about 600 grams (acid equivalent weight)/L.

26. The herbicidal composition concentrate of claim 1 , wherein the composition comprises:
acetic acid, or an agriculturally acceptable salt thereof;
wherein the concentration of dicamba, or an agriculturally acceptable salt or ester thereof, is from about 120 grams (acid equivalent weight)/L to about 600 grams (acid equivalent weight)/L; and
wherein the acid equivalent weight ratio of acetic acid, or agriculturally acceptable salt thereof, to dicamba, or agriculturally acceptable salt or ester thereof, is from about 1:10 to about 5:1.

27. The herbicidal composition concentrate of claim 1 , wherein the composition comprises:
acetic acid, or an agriculturally acceptable salt thereof; and
wherein:
the concentrate contains an amount (acid equivalent weight) of the acetic acid, or ag

Assignees

• Monsanto Technology Llc

Inventors

• Hemminghaus John W
• Macinnes Alison
• Wright Daniel R
• Zhang Junhua

Classifications

• A01N39/04

  Aryloxy-acetic acids; Derivatives thereof · CPC title

• A01N37/40 Primary

  having at least one carboxylic group or a thio analogue, or a derivative thereof, and one oxygen or sulfur atom attached to the same aromatic ring system · CPC title

• A01N37/02 Primary

  Saturated carboxylic acids or thio analogues thereof; Derivatives thereof · CPC title

• G09B19/00

  Teaching not covered by other main groups of this subclass (teaching or practice apparatus for gun-aiming or gun-laying F41G3/26) · CPC title

• A01N57/20

  containing acyclic or cycloaliphatic radicals · CPC title