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Publication Number
US-8993004-B2
Publication Date
2015-03-31
Expiration Date
Abstract
A composition contains at least one pest control active and a mixture of unsaturated C12-C26 fatty acids and/or salts thereof and saturated C6-C14 fatty acids and/or salts thereof. The pest control active is preferably at least one plant essential oil. The composition is suitably in the form of an emulsion, particularly a transparent microemulsion. The mixture of fatty acids and/or salts thereof can be used as part of, or as the sole, emulsifying system. The emulsion can exhibit improved pest control properties.
Core Innovation
The invention relates to a pest control composition in the form of an emulsion, preferably a transparent microemulsion, comprising at least one pest control active and a defined fatty-acid/salt emulsifier system. The composition includes unsaturated C12–C26 fatty acids and/or salts thereof together with saturated C6–C14 fatty acids and/or salts thereof, where greater than 70% by weight of the saturated fatty acids comprise 6 to 12 carbon atoms.
In the emulsion composition, the ratio of the unsaturated fatty acid component to the saturated fatty acid component is in the range from 0.2 to 5:1 by weight. The described formulation defines components such as an oil phase, the pest control active, the fatty acids and/or salts system, optional organic cosolvent, and water, with formulation and stability requirements directed to transparent microemulsions at elevated temperatures.
The described compositions are used as pest control products and are exemplified against pests such as German cockroach and harvester ant. The examples report improved knockdown/efficacy versus controls, including faster knockdown and increased efficacy, supported by example emulsions.
Claims Coverage
The document identifies two independent claims. Each independent claim centers on an emulsion composition containing at least one pest control active plus a specific unsaturated/saturated fatty-acid (and/or salt) emulsifier system defined by carbon ranges and an unsaturated-to-saturated fatty-acid weight ratio of 0.2 to 5:1.
Emulsion with defined unsaturated and saturated fatty-acid components
An emulsion composition comprising at least one pest control active and a mixture of unsaturated C12–C26 fatty acids and/or salts thereof plus saturated C6–C14 fatty acids and/or salts thereof, wherein greater than 70% by weight of the saturated fatty acids comprise 6 to 12 carbon atoms, and wherein the ratio of the unsaturated fatty acid component to the saturated fatty acid component is in the range from 0.2 to 5:1 by weight.
Emulsion with oil phase, optional cosolvent, and defined fatty-acid components
An emulsion comprising an oil phase, at least one pest control active, a mixture of unsaturated C12–C26 fatty acids and/or salts thereof plus saturated C6–C14 fatty acids and/or salts thereof, wherein greater than 70% by weight of the saturated fatty acids comprise 6 to 12 carbon atoms, an optional organic cosolvent, and water, wherein the ratio of the unsaturated fatty acid component to the saturated fatty acid component in the emulsion is in the range from 0.2 to 5:1 by weight.
Across both independent claims, the key claimed coverage is the specified emulsion structure combined with a tightly defined fatty-acid/salt emulsifier system: unsaturated C12–C26 versus saturated C6–C14 with >70% of the saturated fraction having 6 to 12 carbons, and an unsaturated-to-saturated fatty-acid weight ratio limited to 0.2 to 5:1. Dependent claims further narrow particular pest control actives and additional constraints such as fatty-acid identity, free-fatty-acid versus salt proportions, and stability/formation-related conditions.
Stated Advantages
Improved knockdown/efficacy versus controls, including faster knockdown.
Increased efficacy, including about double efficacy on harvester ants.
Transparent microemulsion behavior at elevated temperatures (stability/transparent requirements stated).
Documented Applications
End-use pest control products using the described emulsion compositions against pests such as German cockroach and harvester ant.
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