Temperature stable cloquintocet-mexyl aqueous compositions

Patent metadata

Field	Value
Publication number	US-9204643-B2
Application number	US-201314134592-A
Country	US
Kind code	B2
Filing date	Dec 19, 2013
Priority date	Dec 21, 2012
Publication date	Dec 8, 2015
Grant date	Dec 8, 2015

Abstract

Temperature stable aqueous compositions and methods for their preparation and use are described. The compositions can include cloquintocet-mexyl, a surfactant comprising a tallowamine alkoxylate, a cocoamine alkoxylate, or a combination thereof, and water.

First claim

What is claimed is:

1. A method of reducing crystal growth of an aqueous suspension of hydrated cloquintocet-mexyl, comprising:
contacting an aqueous suspension of hydrated cloquintocet-mexyl with a surfactant selected from the group consisting of a tallowamine alkoxylate, a cocoamine alkoxylate, and mixtures thereof.

2. The method of claim 1 , wherein the stabilized composition is stable at a temperature of 30° C. or greater.

3. The method of claim 2 , wherein the stabilized composition is stable at a temperature from 30° C. to 45° C.

4. The method of claim 1 , wherein the surfactant is ethoxylated.

5. The method of claim 4 , wherein the surfactant comprises an average of from 10 to 20 moles of ethylene oxide.

6. The method of claim 1 , wherein the stabilized composition further comprises a pesticide, and wherein the pesticide is selected from the group consisting of clodinafop-propargyl, flupyrsulfuron, pyroxsulam, and 4-aminopicolinic acid based herbicides.

7. The method of claim 1 , wherein the stabilized composition comprises from 150 g/L to 225 g/L of hydrated cloquintocet-mexyl.

8. The method of claim 7 , wherein the weight ratio of hydrated cloquintocet-mexyl to the pesticide is from 1:1 to 9:1.

9. A method of making a stabilized aqueous composition of hydrated cloquintocet-mexyl, comprising:
mixing anhydrous cloquintocet-mexyl with an aqueous composition comprising water and a wetting surfactant to form an aqueous cloquintocet-mexyl composition;
converting at least 95% of the anhydrous cloquintocet-mexyl to hydrated cloquintocet-mexyl;
mixing a stabilizing surfactant comprising a tallowamine alkoxylate, a cocoamine alkoxylate, or a combination thereof with the aqueous hydrated cloquintocet-mexyl composition; and
milling the resultant product; wherein the stabilizing surfactant reduces the crystal growth of the hydrated cloquintocet-mexyl resulting a stabilized composition.

10. The method of claim 9 , wherein the stabilizing surfactant is ethoxylated.

11. The method of claim 10 , wherein the stabilizing surfactant comprises an average of from 10 to 20 moles of ethylene oxide.

12. The method of claim 9 , wherein a pesticide is combined with the resultant product, and wherein the pesticide is selected from the group consisting of clodinafop-propargyl, flupyrsulfuron, pyroxsulam, and 4-aminopicolinic acid based herbicides.

13. The method of claim 12 , wherein the weight ratio of hydrated cloquintocet-mexyl to the pesticide is from 1:1 to 9:1.

14. The method of claim 9 , wherein the stabilized composition comprises from 150 g/L to 225 g/L of hydrated cloquintocet-mexyl.

15. A temperature stable aqueous composition comprising:
hydrated cloquintocet-mexyl;
a surfactant comprising a tallowamine alkoxylate, a cocoamine alkoxylate, or a combination thereof; and
water; wherein the stabilizing surfactant reduces the crystal growth of the hydrated cloquintocet-mexyl resulting a stabilized composition.

16. The composition of claim 15 , wherein the surfactant is ethoxylated.

17. The composition of claim 16 , wherein the surfactant comprises an average of from 10 to 20 moles of ethylene oxide.

18. The composition of claim 15 , further comprising a pesticide, wherein the pesticide is selected from the group consisting of clodinafop-propargyl, flupyrsulfuron, pyroxsulam, and 4-aminopicolinic acid based herbicides.

19. The composition of claim 18 , wherein the weight ratio of hydrated cloquintocet-mexyl to the pesticide is from 1:1 to 9:1.

20. The composition of claim 15 , wherein the composition comprises from 150 g/L to 225 g/L of hydrated cloquintocet-mexyl.

Assignees

• Dow Agrosciences Llc

Inventors

• Hopkins Derek J

Classifications

• A01N43/42 Primary

  condensed with carbocyclic rings · CPC title

• A01N25/22 Primary

  containing ingredients stabilising the active ingredients · CPC title

• A01N25/32

  Ingredients for reducing the noxious effect of the active substances to organisms other than pests, e.g. toxicity reducing compositions, self-destructing compositions · CPC title

• A01N43/40

  six-membered rings · CPC title

• A01N25/30

  characterised by the surfactants · CPC title