Electret Particle Liquid Formulations for Sustained Insecticide Release
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Solution Overview
Problem
Conventional liquid formulations for controlling arthropod infestations face issues such as short-lasting effectiveness, frequent reapplication needs, environmental contamination, and health risks due to chemical wash-off and resistance development in arthropod species.
Innovation Solution
Development of liquid formulations containing electret particles with a volume mean diameter of ≥10 μm, capable of adhering to eukaryotic tissues, encapsulating chemical agents that slowly release active compounds, thereby reducing the frequency of applications and environmental chemical load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional liquid chemical formulations are applied frequently to maintain arthropod control, then the level of activity is maintained, but the chemical load to the environment increases and causes adverse effects on non-target organisms
Solution Approach 1:
The patent applies dynamics by transitioning from static chemical applications to dynamic electret particles that can actively adhere to arthropods and release chemicals on demand. The electret particles change state from suspended in liquid to adhered on target surfaces, providing sustained activity without frequent reapplication.
Solution Approach 2:
The patent changes the physical and chemical parameters of the chemical delivery system by encapsulating chemicals in electret particles with specific charge characteristics. This transforms the delivery mechanism from direct liquid application to controlled release from charged particles, extending duration of action and reducing environmental load.
2Manufacturing precision
If conventional spray applications are used to treat arthropods, then chemicals are applied evenly, but losses to the environment are high due to wash-off from rain or irrigation
Solution Approach 1:
The patent replaces the mechanical spray application system with an electrostatic adhesion system. Instead of relying on liquid adhesion that can be washed away, electret particles use electrostatic forces to adhere to arthropod surfaces, substituting mechanical/chemical adhesion with electromagnetic forces that resist wash-off.
Solution Approach 2:
The electret particles act as intermediaries between the chemical agent and the arthropod target. They carry the chemicals and deliver them through electrostatic adhesion, mediating the transfer while protecting the chemical from environmental wash-off until it reaches the target.
3Object-generated harmful factors
If dry powder formulations are applied to crops, then chemical load is reduced, but application evenness is poor and worker safety is compromised
Solution Approach 1:
The patent changes the physical state parameter of the formulation from dry powder to liquid suspension containing electret particles. This allows the use of conventional spray equipment while maintaining the low chemical load benefit, as the electret particles are suspended in liquid but deliver chemicals more efficiently.
4Reliability
If liquid chemical formulations are applied to control arthropods, then initial activity is effective, but duration of action is short requiring frequent reapplication
Solution Approach 1:
The patent applies preliminary action by pre-encapsulating chemical agents within electret particles before application. The chemicals are prepared in advance within the particle structure, ready for controlled release upon adhesion to the target, extending the duration of action without requiring frequent reapplication.
Solution Approach 2:
The electret particles provide continuous release of chemical agents after initial adhesion to arthropods. This continuous useful action maintains effectiveness over extended periods, contrasting with conventional formulations that require intermittent reapplication to maintain activity levels.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The electret particle-based formulations provide prolonged activity against arthropods, enhance delivery efficacy, and minimize environmental impact by maintaining chemical presence on target surfaces, reducing the need for frequent applications and minimizing exposure to non-target organisms.
Implementation Method 1
electret particles having a volume mean diameter of ≥10 μm and capable of adhering to eukaryote tissue
Implementation Method 2
encapsulated within and on the surface of the said electret particles at least one chemical agent that has an activity on arthropods
Data Source
AI summary
Liquid formulations for controlling arthropod infestation that comprise particles carrying chemical agents that have activity against arthropods, the particles being suspended within the liquid formulation, uses therefor, and methods of producing such liquid formulations.