Insecticidal aqueous-based microemulsion compositions
AssigneeAmerican Cyanamid Company
InventorMark Bell
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Abstract
The present invention relates to novel insecticidal aqueous-based microemulsion compositions and methods for controlling insects with said aqueous-based microemulsions. The microemulsions of the present invention contain a synthetic pyrethroid or organophosphate insecticide, a certain surfactant blend, microemulsion adjuvants such as antifoamers, antifreezing agents, thickeners and preservatives and provide thermodynamically, stable compositions uniquely suited for ultra-low volume (ULV) applications in combatting insect pests.
Claims17
An aqueous-based insecticidal microemulsion composition comprising, on a weight to volume basis:
- about 1% to 20% of (.+-.)-.alpha.-cyano-m-phenoxybenzyl (+)-2-[p-(difluoromethoxy)-phenyl]-3-methylbutyrate;
- about 1.0% to 40% of the surfactant blend consisting of one or more components selected from the group consisting of calcium dodecylbenzene sulfonate, ethoxylated distyrylphenol ammonium sulfate with 5 moles of ethoxylation and ethoxylated tristyrylphenol with 17 moles of ethoxylation;
- about 0% to 12% thickening agents, antifoaming agents, antifreezing agents, antimicrobial preservatives or mixtures thereof;
- and water to total said composition to 100%.
A method for controlling insect pest, wherein said method comprises:
- applying to the habitat, food supply or breeding sites of said insect pests, an insecticidally-effective amount of an aqueous-based microemulsion composition;
- said composition containing about 1% to 20% of (.+-.)-.alpha.-cyano-m-phenoxybenzyl (+)-2-[p-difluoromethoxy)-phenyl]-3-methylbutyrate;
- about 1.0% to 40% of the surfactant blend consiting of one or more components selected from the group consisting of calcium dodecylbenzene sulfonate, ethoxylated distyrylphenol ammonium sulfate with 5 moles of ethoxylation and ethoxylated tristyrylphenol with 17 moles of ethoxylation;
- about 0% to 12% thickening agents, antifoaming agents, antifreezing agents, antimicrobial preservatives or mixtures thereof;
- and water to total said composition to 100%.
A method for controlling insect pests utilizing ultra-low volume (ULV) application, said method comprising:
- applying to the habitat, food supply or breeding site of said insect pests, an insecticidal amount of an aqueous-based insecticidal microemulsion composition with finely divided discrete droplets having mass medium diameter size of about 17 to 150 microns, said composition containing, on a weight to volume basis, about 1% to 20% of (.+-.)-.alpha.-cyano-m-phenoxybenzyl (+)-2-[p-difluoromethoxy)-phenyl]-3-methylbutyrate;
- about 1.0% to 40% of the surfactant blend consisting of one or more components selected from the group consisting of calcium dodecylbenzene sulfonate, ethoxylated distyrylphenol ammonium sulfonate with 5 moles of ethoxylation and ethoxylated tristyrylphenol with 17 moles of ethoxylation;
- about 0% to 12% microemulsion adjuvants;
- and water to total said composition to 100%.
Dependencies are inferred from the claim text.