# US 2023/0263157 A1 · Drift reduction adjuvant compositions and methods of using same

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- Number: US 2023/0263157 A1
- Document ID: US20230263157A1
- Status: Published application
- Kind: A1
- Application number: 18/310,706
- Filed: 2023-05-02
- Published: 2023-08-24
- Earliest claimed: 2016-12-30
- Assignees: WinField Solutions, LLC
- Applicants: WinField Solutions, LLC
- Inventors: Daniel C. Bissell; Danny Brown
- Web page: https://patentgrep.com/patent/US20230263157A1

## CPC

- A01N 25/02: containing liquids as carriers, diluents or solvents
- A01N 25/06: Aerosols
- A01N 37/10: Aromatic or araliphatic carboxylic acids, or thio analogues thereof; Derivatives thereof
- A01N 37/40: 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
- A01N 57/20: containing acyclic or cycloaliphatic radicals
- A01N: PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF (preservation of food or foodstuff A23); BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES (preparations for medical, dental or toiletry purposes which kill or prevent the growth or proliferation of unwanted organisms A61K); PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS

## Abstract

Drift reduction adjuvant composition and agricultural sprays containing such agricultural compositions contain water, a rheology modifier (e.g., guar gum or polyacrylamide), an emulsifier such as a polyoxyethylene sorbitan emulsifier, and an oil. When the agricultural spray containing the drift reduction adjuvant composition and a pesticide is delivered from an agricultural nozzle, it produces fewer droplets less than 150 μm in diameter and either reduces, maintains or increases (e.g., by up to 30 percentage points) the number of ultra-coarse droplets above 622 μm in diameter compared to an agricultural spray of the pesticide without the drift reduction adjuvant composition sprayed under the same conditions.

## Claims

### Claim 1

A drift reduction adjuvant composition comprising:
water;
at least one rheology modifier comprising polyacrylamide, the polyacrylamide present in an amount of about 0.01 g/ml to about 0.08 g/ml of the drift reduction adjuvant composition;
an emulsifier comprising a polyoxyethylene sorbitan emulsifier, the emulsifier present in an amount of about 0.1% to about 3.0% (v/v) of the drift reduction adjuvant composition; and
a modified seed oil present in an amount of about 20% to about 40% (v/v) of the drift reduction adjuvant composition.

### Claim 2 (depends on 1)

The drift reduction adjuvant composition of claim 1, wherein the modified seed oil comprises one or more of methylated soybean oil, methylated palm oil, or methylated rapeseed oil.

### Claim 3 (depends on 1)

The drift reduction adjuvant composition of claim 1, wherein the polyacrylamide forms about 0.02 g/ml to about 0.04 g/ml of the drift reduction adjuvant composition.

### Claim 4 (depends on 1)

The drift reduction adjuvant composition of claim 1, wherein the polyacrylamide forms about 0.04 g/ml to about 0.06 g/ml of the drift reduction adjuvant composition.

### Claim 5 (depends on 1)

The drift reduction adjuvant composition of claim 1, wherein the emulsifier is present in an amount of about 0.5% to about 2.5% (v/v) of the drift reduction adjuvant composition.

### Claim 6 (depends on 1)

The drift reduction adjuvant composition of claim 1, wherein the modified seed oil forms about 30% to about 40% (v/v) of the drift reduction adjuvant composition.

### Claim 7 (depends on 1)

The drift reduction adjuvant composition of claim 1, wherein the composition has a pH of about 5.5 to about 7.5.

### Claim 8 (depends on 1)

An agricultural spray comprising the drift reduction adjuvant composition of claim 1 and a pesticide.

### Claim 9 (depends on 8)

The agricultural spray of claim 8, wherein the polyacrylamide is present in an amount of about 0.3×10−4 g/ml to about 8.0×10−4 g/ml of the agricultural spray.

### Claim 10 (depends on 8)

The agricultural spray of claim 8, wherein the modified seed oil is present in an amount of about 0.08% to about 0.31% (v/v) of the agricultural spray.

### Claim 11

A drift reduction adjuvant composition, comprising:
water;
polyacrylamide present in an amount of about 1% to about 6% (v/v) of the drift reduction adjuvant composition;
an emulsifier comprising a polyoxyethylene sorbitan emulsifier, the emulsifier present in an amount of about 2.5% to about 3.2% (v/v) of the drift reduction adjuvant composition; and
a methylated seed oil present in an amount of about 20% to about 40% (v/v) of the drift reduction adjuvant composition.

### Claim 12 (depends on 11)

The drift reduction adjuvant composition of claim 11, wherein the polyoxyethylene sorbitan emulsifier comprises one or more of: polyoxyethylene sorbitan fatty acid ester, polyoxyethylene 20 sorbital trioleate, polyoxyethylene sorbitan mixed fatty acid ester, polyoxyethylene sorbitan monolaurate, polyoxyethylene sorbitan monooleate, polyoxyethylene sorbitan monopalmitate, polyoxyethylene sorbitan monostearate, polyoxyethylene sorbitan monotallate, polyoxyethylene sorbitol hexaoleate, polyoxyethylene sorbitol oleate-laurate, polyoxyethylene sorbitol penta tall oil ester (40 moles), polyoxyethylene sorbitol tetraoleate, or polyoxyethylene sorbitol, mixed ethyl ester.

### Claim 13 (depends on 11)

The drift reduction adjuvant composition of claim 11, wherein the polyacrylamide forms about 2.0% to about 4.0% (v/v) of the drift reduction adjuvant composition.

### Claim 14 (depends on 11)

The drift reduction adjuvant composition of claim 11, wherein the polyacrylamide forms about 1.25% to about 2.75% (v/v) of the drift reduction adjuvant composition.

### Claim 15 (depends on 11)

The drift reduction adjuvant composition of claim 11, wherein the methylated seed oil forms about 30% to about 35% (v/v) of the drift reduction adjuvant composition.

### Claim 16 (depends on 11)

The drift reduction adjuvant composition of claim 11, wherein the composition has a pH of about 5.5 to about 7.5.

### Claim 17 (depends on 11)

The drift reduction adjuvant composition of claim 11, wherein when the drift reduction adjuvant is sprayed in an agricultural spray such that the polyacrylamide is present in an amount of about 0.93×10−4 g/ml to about 3.25×10−4 g/ml of the agricultural spray and/or the methylated seed oil is present in an amount of about 0.078% to about 0.391% (v/v) of the agricultural spray, the agricultural spray produces fewer droplets less than 150 μm in diameter and/or reduces, maintains, or increases by up to 30 percentage points the number of ultra-coarse droplets above 622 μm in diameter when delivered from an agricultural nozzle compared to an agricultural spray of the pesticide without the drift reduction adjuvant composition sprayed under the same conditions.

### Claim 18 (depends on 11)

An agricultural spray comprising the drift reduction adjuvant composition of claim 11 and a pesticide.

### Claim 19 (depends on 18)

The agricultural spray of claim 18, wherein the polyacrylamide is present in an amount of about 0.93×10−4 g/ml to about 3.25×10−4 g/ml of the agricultural spray.

### Claim 20 (depends on 18)

The agricultural spray of claim 18, wherein the methylated seed oil is present in an amount of about 0.078% to about 0.391% (v/v) of the agricultural spray.