Temperature Stable Cloquintocet-Mexyl Aqueous Compositions

• US 20140179526A1
• Filed: 12/19/2013
• Published: 06/26/2014
• Est. Priority Date: 12/21/2012
• Status: Active Grant

• Current Assignee: Corteva Agriscience LLC (Corteva, Inc.)
• Original Assignee: Dow Agrosciences LLC (Corteva, Inc.)
• Inventors: Hopkins, Derek J.
• Granted Patent: US 9,204,643 B2
• Time in Patent Office: Days
• US Class Current: 504/105
• CPC Class Codes: A01N 25/04 Dispersions, emulsions, suspoemulsions, suspension concentrates or gels foams A01N25/16
• CPC Class Codes: A01N 25/30 characterised by the surfactants
• CPC Class Codes: A01N 25/32 Ingredients for reducing the noxious effect of the active substances to organisms other than pests, e.g. toxicity reducing compositions, self-destructing compositions
• CPC Class Codes: A01N 43/40 six-membered rings
• CPC Class Codes: A01N 43/42 condensed with carbocyclic rings
• CPC Class Codes: A01N 43/90 having two or more relevant hetero rings, condensed among themselves or with a common carbocyclic ring system
• CPC Class Codes: A01N 47/36 containing the group >N—CO—N< directly attached to at least one heterocyclic ring; Thio analogues thereof

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.

Claims

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 8, wherein the weight ratio of hydrated cloquintocet-mexyl to the pesticide is from 1:

1 to 9;

1.

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

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.

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.

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.