Herbicidal composition with increased herbicidal efficacy

Patent metadata

Field	Value
Publication number	US-9357768-B2
Application number	US-86615707-A
Country	US
Kind code	B2
Filing date	Oct 2, 2007
Priority date	Oct 5, 2006
Publication date	Jun 7, 2016
Grant date	Jun 7, 2016

Abstract

An herbicide composition available as a concentrate for dilution with water or a ready-to-use oil-in-water emulsion which has a significantly reduced amount of active ingredient of a broadleaf herbicide. The composition combines the reduced amount of herbicide in a mixture of oil and emulsifier.

First claim

The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:

1. An emulsion-forming herbicidal composition consisting essentially of:
two or more broadleaf herbicides in an effective amount;
a synthetic isoparaffinic oil and an emulsifier, wherein the wt % ratio of oil to emulsifier is from about 95:5 to about 50:50;
one or more preservatives; and
water;
wherein:
the effective amount of the two or more broadleaf herbicides is from about 10% to about 50% of a prescribed label rate for the broadleaf herbicides; and
the emulsion-forming herbicidal composition has from about 5 wt % to about 10 wt % of the oil and emulsifier.

2. The composition of claim 1 wherein the wt % ratio of oil to emulsifier is from about 85:15 to about 90:10.

3. The composition of claim 1 wherein at least one of the two or more broadleaf herbicides comprises an auxin mimic-type herbicide.

4. The composition of claim 3 wherein two or more broadleaf herbicides are selected from a group consisting of:
2,4-dichlorophenoxyacetic acid in the form of an acid, a salt, an ester, or combinations thereof;
2-(2methyl-4-chlorophenoxy)propionic acid, in the form of an acid, a salt, an ester or combinations thereof; and
3,6-dichloro-o-anisic acid in the form of an acid, a salt, or combinations thereof.

5. The composition of claim 1 wherein the emulsifier comprises an ethoxylated alcohol.

6. The composition of claim 1 wherein the wt % ratio of oil to emulsifier is from greater than about 80:20 to about 95:5.

7. The composition of claim 1 wherein the wt % ratio of oil to emulsifier is about 85:15.

8. The composition of claim 1 wherein one of the two or more broadleaf herbicides comprises at least one herbicide selected from the group consisting of:
2,4-dichlorophenoxyacetic acid in the form of an acid, a salt, an ester, or combinations thereof;
4-(2,4-dichlorophenoxy)butyric acid in the form of an acid, a salt, an ester, or combinations thereof;
2-(2,4-dichlorophenoxy)propionic acid in the form of an acid, a salt, an ester, or combinations thereof;
dicamba in the form of an acid, a salt, or combinations thereof;
2-methyl-4-chlorophenoxyacetic acid in the form of an acid, a salt, an ester, or combinations thereof;
2-(2-methyl-4-chlorophenoxy)propionic acid in the form of an acid, a salt, an ester, or combinations thereof;
clopyralid in the form of an acid, a salt, an ester, or combinations thereof;
fluoroxypyr in the form of an acid, a salt, an ester, or combinations thereof;
picloram in the form of an acid, a salt, an ester, or combinations thereof; and
quinclorac.

9. The composition of claim 1 wherein at least one of the two or more broadleaf herbicides comprises at least one of the herbicides selected from the group consisting of:
2,4-dichlorophenoxyacetic acid in the form of an acid, a salt, an ester, or combinations thereof;
2-(2-methyl-4-chlorophenoxy)propionic acid, in the form of an acid, a salt, an ester or combinations thereof; and
3,6-dichloro-o-anisic acid in the form of an acid, a salt, or combinations thereof.

10. The composition of claim 1 wherein the emulsifier comprises polyoxyethylene lauryl ether, C10 to C16 alcohol ethoxylates, and glycerol oleate.

11. The composition of claim 4 wherein the wt % ratio of oil to emulsifier is from about 85:15 to about 90:10.

12. The composition of claim 4 wherein the wt % ratio of oil to emulsifier is about 85:15.

13. The composition of claim 4 wherein the emulsifier comprises an ethoxylated alcohol.

14. The composition of claim 4 wherein the emulsifier comprises polyoxyethylene lauryl ether, C10 to C16 alcohol ethoxylates, and glycerol oleate.

15. The composition of claim 1 , wherein the one or more preservatives comprises methylchloroisothiazolinone in combination with methylisothiazolinone.

16. An emulsion-forming herbicidal composition consisting essentially of:
two or more broadleaf herbicides in an effective amount;
a paraffinic oil and an emulsifier, wherein the wt % ratio of oil to emulsifier is from about 95:5 to about 50:50;
one or more preservatives; and
water;
wherein:
the effective amount of the two or more broadleaf herbicides is from about 10% to about 50% of a prescribed label rate for the two or more broadleaf herbicides; and
the emulsion-forming herbicidal composition has from about 5 wt % to about 10 wt % of the oil and emulsifier.

17. The composition of claim 16 wherein at least one of the two or more broadleaf herbicides comprises an auxin mimic-type herbicide.

18. The composition of claim 17 , wherein the two or more broadleaf herbicides are selected from the group consisting of:
2,4-dichlorophenoxyacetic acid in the form of an acid, a salt, an ester, or combinations thereof;
2-(2methyl-4-chlorophenoxy)propionic acid, in the form of an acid, a salt, an ester or combinations thereof; and
3,6-dichloro-o-anisic acid in the form of an acid, a salt, or combinations thereof.

19. The composition of claim 16 , wherein the emulsifier comprises an ethoxylated alcohol.

20. The composition of claim 16 , wherein the wt % ratio of oil to emulsifier is from greater than about 80:20 to about 95:5.

21. The composition of claim 16 , wherein the wt % ratio of oil to emulsifier is about 85:15.

22. The composition of claim 16 wherein one of the two or more broadleaf herbicides comprises at least one herbicide selected from the group consisting of:
2,4dichlorophenoxyacetic acid in the form of an acid, a salt, an ester, or combinations thereof;
4-(2,4-dichlorophenoxy)butyric acid in the form of an acid, a salt, an ester, or combinations thereof;
2-(2,4-dichlorophenoxy)propionic acid in the form of an acid, a salt, an ester, or combinations thereof;
dicamba in the form of an acid, a salt, or combinations thereof;
2-methyl-4-chlorophenoxyacetic acid in the form of an acid, a salt, an ester, or combinations thereof;
2-(2-methyl-4-chlorophenoxy)propionic acid in the form of an acid, a salt, an ester, or combinations thereof;
clopyralid in the form of an acid, a salt, an ester, or combinations thereof;
fluoroxypyr in the form of an acid, a salt, an ester, or combinations thereof;
picloram in the form of an acid, a salt, an ester, or combinations thereof; and
quinclorac.

23. The composition of claim 16 , wherein at least one of the two or more broadleaf herbicides comprises at least one of the herbicides selected from the group consisting of:
2,4-dichlorophenoxyacetic acid in the form of an acid, a salt, an ester, or combinations thereof;
2-(2-methyl-4-chlorophenoxy)propionic acid, in the form of an acid, a salt, an ester, or combinations thereof; and
3,6-dichloro-o-anisic acid in the form of an acid, a salt, or combinations thereof.

24. The composition of claim 16 , wherein the emulsifier comprises polyoxyethylene lauryl ether, C10 to C16 alcohol ethoxylates, and glycerol oleate.

25. The composition of claim 18 , wherein the wt % ratio of oil to emulsifier is from about 85:15 to about 90:10.

26. The composition of claim 18 , wherein the wt % ratio of oil to emulsifier is about 85:15.

27. the composition of claim 18 , wherein the emulsifier comprises an ethoxylated alcohol.

28. The composition of claim 18 , wherein the emulsifier comprises polyoxyethylene lauryl ether, C10 to C16 alcohol ethoxylates, glycerol oleate.

Assignees

• Fefer Michael
• Liu Jun
• Suncor Energy Inc

Inventors

• Fefer Michael
• Liu Jun

Classifications

• A01N39/04

  Aryloxy-acetic acids; Derivatives thereof · CPC title

• A01N39/02

  Aryloxy-carboxylic acids; Derivatives thereof · CPC title

• A01N25/04 Primary

  Dispersions, {emulsions, suspoemulsions, suspension concentrates} or gels (foams A01N25/16) · CPC title

• A01N37/40

  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

• A01N2300/00

  Combinations or mixtures of active ingredients covered by classes A01N27/00 - A01N65/48 with other active or formulation relevant ingredients, e.g. specific carrier materials or surfactants, covered by classes A01N25/00 - A01N65/48 · CPC title