Insecticidal Matrix Particles for Fast Contact Knock-Down
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Solution Overview
Problem
Existing insecticides with high melting points and low solubility struggle to achieve effective contact efficacy against pests like cockroaches, mosquitoes, and flies due to their crystalline structure, leading to limited uptake and resistance issues, especially in formulations requiring fast knock-down action.
Innovation Solution
Formulating insecticidal active ingredients with high melting points and low solubility into a matrix of polymerized C7 to C12 unsaturated aromatic hydrocarbons, creating particles with sizes between 0.1 to 75 microns, ensuring even distribution and stability, which enhances contact efficacy and resistance breaking potential.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If insecticidal active ingredients with high melting point and low solubility are used, then resistance breaking potential and biological activity are improved, but contact efficacy is worsened due to crystalline structure formation
Solution Approach 1:
The patent changes the physical state parameter of the active ingredient from crystalline to amorphous by incorporating it into a polymer matrix. This parameter change prevents crystal formation, thereby improving contact efficacy while maintaining the high biological activity and resistance breaking potential of the active ingredient.
Solution Approach 2:
The patent creates a composite material system consisting of the active ingredient dispersed within a polymer matrix (such as polyethylene glycol, polyvinyl alcohol, or carboxymethyl cellulose). This composite structure allows the active ingredient to remain in an amorphous state, enhancing contact efficacy while preserving its high biological activity.
2Duration of action of stationary object
If controlled release formulations with polymer matrix are used, then residual biological efficacy is prolonged, but initial biological efficacy and contact efficacy are reduced
Solution Approach 1:
The patent changes the physical state of the active ingredient from crystalline to amorphous within the polymer matrix. This parameter change enables rapid dissolution and high initial biological efficacy, while the polymer matrix still provides prolonged residual efficacy through controlled release mechanisms.
Solution Approach 2:
The patent creates different functional zones within the formulation: the amorphous active ingredient provides high initial efficacy and fast knock-down, while the polymer matrix structure provides sustained release and prolonged residual efficacy. This local quality differentiation resolves the contradiction between initial and residual effectiveness.
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 formulation provides high initial biological efficacy and resistance breaking capabilities, achieving efficient knock-down and control of pests without oral uptake, suitable for various surfaces and environments.
Implementation Method 1
at least one insecticidal active ingredient is distributed in b) a matrix material comprising polymerized monomer units selected from the group of C7 to C12 unsaturated aromatic hydrocarbons
Data Source
AI summary
Provided herein are insecticidal formulations for vector and pest control with increased contact efficacy, more particularly insecticidal active ingredient-matrix material particles and insecticidal compositions comprising such insecticidal active ingredient-matrix material particles. Methods of preparation of the insecticidal active ingredient-matrix material particles, the insecticidal compositions and uses of such insecticidal formulations are also provided.