US 12,453,347 B2
Pesticide emulsion concentrates containing natural or petroleum derived oils and methods of use
Hui Shao, Carmel, IN (US); and Holger Tank, Indianapolis, IN (US)
Assigned to CORTEVA AGRISCIENCE LLC, , IN (US)
Filed by CORTEVA AGRISCIENCE LLC, Indianapolis, IN (US)
Filed on May 1, 2023, as Appl. No. 18/310,006.
Application 18/310,006 is a continuation of application No. 14/535,455, filed on Nov. 7, 2014, abandoned.
Claims priority of provisional application 61/901,562, filed on Nov. 8, 2013.
Prior Publication US 2023/0263158 A1, Aug. 24, 2023
Int. Cl. A01N 25/04 (2006.01); A01N 25/06 (2006.01); A01N 37/38 (2006.01); A01N 39/04 (2006.01); A01N 57/20 (2006.01)
CPC A01N 25/04 (2013.01) [A01N 25/06 (2013.01); A01N 37/38 (2013.01); A01N 39/04 (2013.01); A01N 57/20 (2013.01)] 15 Claims
 
1. An aqueous pesticide concentrate, comprising:
from 5 to 90 weight percent of a pesticide;
from 0.1 to 20 weight percent of a surfactant; and
from 0.1 to 20 weight percent of a petroleum derived oil,
wherein the petroleum derived oil is dispersed as discrete droplets in the aqueous pesticide concentrate to form a stable oil-in-water emulsion with a droplet size from about 0.01 micron (μm) to about 20 μm;
wherein the petroleum derived oil is an aromatic or a paraffinic hydrocarbon, or mixtures thereof,
wherein the surfactant is a mixture of an ABA block copolymer having a hydrophilic portion of polyethylene oxide and a hydrophobic portion of poly(12-hydroxystearate), and an AB block copolymer containing EO and PO blocks; and
wherein the pesticide is a water soluble salt of an auxinic herbicide selected from a water soluble salt of 2,4-D, a water soluble salt of triclopyr, a water soluble salt of dicamba, or mixtures thereof.
 
6. A method for reducing spray drift during pesticide spray application to control pests comprising:
providing an aqueous pesticide concentrate comprising:
from 5 to 90 weight percent of a pesticide;
from 0.1 to 20 weight percent of a surfactant;
from 0.1 to 20 weight percent of a petroleum derived oil,
wherein the petroleum derived oil is dispersed as discrete droplets in the aqueous pesticide concentrate to form a stable oil-in-water emulsion with a mean droplet size from about 0.01 micron (μm) to about 20 μm;
adding the aqueous pesticide concentrate to a spray tank containing water to form a stable emulsion; and
spraying the stable emulsion to control one or more pests,
wherein the petroleum derived oil is an aromatic or a paraffinic hydrocarbon, or mixtures thereof,
wherein the surfactant is a mixture of an ABA block copolymer having a hydrophilic portion of polyethylene oxide and a hydrophobic portion of poly(12-hydroxystearate) and an AB block copolymer containing EO and PO blocks, and
wherein the pesticide is a water soluble salt of an auxinic herbicide selected from a water soluble salt of 2,4-D, a water soluble salt of triclopyr, a water soluble salt of dicamba, or mixtures thereof.