Manufacture and use of agricultural spray adjuvants for hard water conditions

• US 10,568,319 B2
• Filed: 09/21/2018
• Issued: 02/25/2020
• Est. Priority Date: 05/28/2003
• Status: Expired due to Term

• Current Assignee: Agquam LLC, AgQuam R&D, LLC
• Original Assignee: AgQuam R&D, LLC
• Inventors: Parrish, Scott K.
• Primary Examiner(s): Arnold, Ernst V
• Application Number:
  US16/138,659
• Publication Number:
  US 20190183115A1
• Time in Patent Office: 522 Days
• CPC Class Codes: A01N 25/10 Macromolecular compounds
• CPC Class Codes: A01N 25/22 containing ingredients stabilising the active ingredients
• 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

Abstract

The invention pertains to a method for manufacture and use of pesticides or agricultural spray adjuvants that counteracts the effects of hard water cat ions on anionic pesticides when applied in water spray solutions. The disclosed agricultural spray adjuvants include glyphosate compositions comprising a strong mineral acid, such as sulfuric acid, and a polyamine surfactant, such as tallow amine or coco amine.

Claims

1. A water soluble glyphosate composition comprising:

(a) an aqueous glyphosate solution comprising glyphosate or a salt thereof;

(b) a concentrated solution comprising sulfuric acid and a polyamine surfactant selected from tallow amine ethoxylate and coco amine ethoxylate combined in an agricultural spray solution; and

wherein said composition consists of a ratio of 1 quart to 2 gallons of (b) to 100 gallons of (a); and

wherein said composition has a pH above the PKa₂ of glyphosate, and wherein better herbicidal efficacy is provided in comparison to 5-20 pounds ammonium sulfate (AMS) per 100 gallons of (a).

2. The composition as claimed in claim 1, wherein said polyamine surfactant is tallow amine ethoxylate.

3. The composition as claimed in claim 1, wherein said polyamine surfactant is coco amine ethoxylate.

4. The water soluble glyphosate composition of claim 1 wherein said composition consists of a ratio of 1 quart to 1 gallon of (b) to 100 gallons of (a).

5. The composition as claimed in claim 1, further comprising sodium bisulfate.

6. A water soluble glyphosate composition comprising:

(a) an aqueous glyphosate solution comprising glyphosate or a salt thereof;

(b) a concentrated solution comprising sulfuric acid and a polyamine surfactant selected from tallow amine ethoxylate and coco amine ethoxylate combined in an agricultural spray solution;

wherein said composition does not contain ammonium sulfate (AMS); and

wherein said composition consists of a ratio of 1 quart to 2 gallons of (b) to 100 gallons of (a); and

wherein said composition has a pH above the PKa2 of glyphosate, and wherein better herbicidal efficacy is provided in comparison to 5-20 pounds AMS per 100 gallons of (a), as measured by percent control of annual bluegrass.

7. The composition as claimed in claim 6, wherein said polyamine surfactant is tallow amine ethoxylate.

8. The composition as claimed in claim 6, wherein said polyamine surfactant is coco amine ethoxylate.

9. The water soluble glyphosate composition of claim 6, wherein said composition consists of a ratio of 1 quart to 1 gallon of (b) to 100 gallons of (a).

10. The composition as claimed in claim 6, further comprising sodium bisulfate.