Cationic surfactant based adjuvant systems for some herbicides that increase pH, herbicide solubility and performance

• US 8,932,988 B2
• Filed: 11/26/2004
• Issued: 01/13/2015
• Est. Priority Date: 11/26/2004
• Status: Active Grant

• Current Assignee: Agquam LLC
• Original Assignee: Agquam LLC
• Inventors: Parrish, Scott K.
• Primary Examiner(s): Haghighatian, Mina
• Assistant Examiner(s): Chui, Helen
• Application Number:
  US10/997,634
• Publication Number:
  US 20090325805A1
• Time in Patent Office: 3,700 Days
• Field of Search: 504/211, 504/116.1, 504/189, 504/210, 504/212, 504214-216, 504/235, 504/239, 504/358
• US Class Current: 504/211
• CPC Class Codes: A01N 25/30 characterised by the surfactants
• 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
• CPC Class Codes: A01N 47/38 containing the group >N—CO—N< where at least one nitrogen atom is part of a heterocyclic ring; Thio analogues thereof

Abstract

A method for increasing the performance of sulfonylurea and sulfonamide herbicides by using blends of cat-ionic surfactants and basic pH adjustors as adjuvants.

Claims

1. An aqueous herbicidal spray composition consisting of:

an adjuvant blend consisting of a cationic surfactant and a basic pH adjustor in an amount effective for providing an alkaline pH of above 9 to about 10.5 when formulated in the aqueous spray composition; and

an effective amount of a sulfonylurea or sulfonamide herbicide.

2. The composition according to claim 1 where the basic pH adjustor is selected from the group consisting of ammonium hydroxide, potassium hydroxide, sodium hydroxide monoethanolamine, diethanolamine, triethanolamine, and mixtures thereof.

3. The composition according to claim 1 where the cationic surfactant is selected from the group consisting of tallow amine, tallow diamine, coco amines, ether amines, and mixtures thereof.

4. The composition of claim 1 wherein said herbicide is a sulfonylurea.

5. The composition of claim 1 wherein said herbicide is selected from the group consisting of sulfosulfuron, mesosulfuron-methyl, nicosulfuron, and propoxycarbazone.

6. An aqueous herbicidal spray composition consisting of:

an adjuvant blend consisting of a tallow amine and ammonium hydroxide, wherein the ammonium hydroxide is present in an amount effective for providing an alkaline pH of above 9 to about 10.5 when formulated in the aqueous spray composition; and

an effective amount of a sulfonylurea or sulfonamide herbicide.