Biodegradable Insecticide Solid Mixture for Controlled Leaf Release
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Solution Overview
Problem
Current insecticide application methods lead to environmental pollution and require continuous high-dose applications due to rapid removal by environmental factors, and existing delayed-release insecticides face challenges in selecting biodegradable carriers and controlling release rates, often using microcapsules that release microplastics.
Innovation Solution
A solid mixture comprising zeolite, biodegradable oligosaccharides and/or polysaccharides, and layered silicates, which forms microscopic/macroscopic capsules on plant leaves for controlled release of active ingredients, allowing uniform distribution and extended effectiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If conventional insecticide application methods (spraying, spreading) are used, then the insecticide is quickly available and effective, but it is rapidly removed by environmental factors requiring continuous high-dose application
Solution Approach 1:
The insecticide is pre-encapsulated in biodegradable microcapsules before application. This preliminary encapsulation action allows the insecticide to be released gradually after application rather than being immediately available, extending its persistence while maintaining effectiveness.
Solution Approach 2:
Biodegradable polymer shells form flexible membranes around the insecticide active ingredients. These thin film encapsulations control the release rate while protecting the insecticide from environmental factors, enabling sustained release over time.
2Duration of action of moving object
If delayed-release insecticides are used with special coatings or encapsulation, then the insecticide is released in a controlled manner for longer effect, but the carrier material selection is limited and complex
Solution Approach 1:
The invention uses composite materials combining biodegradable polymers with natural waxes and oils to create encapsulation shells. This composite approach provides both controlled release functionality and biodegradability, reducing complexity by using naturally compatible materials rather than requiring multiple separate components.
Solution Approach 2:
The invention employs biodegradable carrier materials that naturally decompose after serving their purpose of controlled release. This disposable approach eliminates the need for complex retrieval or disposal systems, reducing overall system complexity while maintaining environmental compatibility.
3Manufacturing precision
If nano- or microcapsules are used to control release rate, then the release can be precisely controlled, but microplastics are released into the environment causing harm
Solution Approach 1:
The invention converts the potential harm of non-biodegradable microplastic release into a benefit by using biodegradable polymer materials for the capsule shells. The same encapsulation technology that provides precise release control now also ensures environmental safety through natural decomposition into harmless byproducts.
Solution Approach 2:
The invention changes the chemical composition parameter of the capsule shell material from conventional non-biodegradable polymers to biodegradable polymers. This parameter change maintains the precision of release rate control while fundamentally altering the environmental fate of the capsules from persistent pollution to natural decomposition.
4Ease of operation
If ready-to-use delayed-release insecticide particles are used, then application is simple, but users lack flexibility to control release rate and insecticide composition
Solution Approach 1:
The invention segments the insecticide formulation into separate components: biodegradable polymer shells, active ingredients, and optional additives. Users can mix and match different combinations of these segments to create customized formulations with specific release rates and compositions, maintaining ease of operation through simple mixing while gaining flexibility in formulation design.
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 composition achieves a long-lasting effect with reduced active ingredient loss, minimizing frequent applications and environmental impact by using naturally occurring ingredients, with a residual amount of 50% or higher after application compared to conventional formulations.
Implementation Method 1
The biodegradable oligosaccharides and/or polysaccharides are able to form a gel matrix into which the other components of the solid mixture can be embedded
Implementation Method 2
As the water evaporates after application, microscopic/macroscopic capsules/droplets form on the leaves
Implementation Method 3
30 to 90 wt% of at least one zeolite, 5 to 30 wt% of at least one layered silicate
Data Source
Figure 1A~1B
Figure 2~3
AI summary
The present patent application relates to a solid mixture comprising - 30 to 90 wt% of at least one zeolite, - 1 to 30 wt% of at least one biodegradable oligosaccharide and/or at least one biodegradable polysaccharide, - 5 to 30 wt% of at least one layered silicate, and - 0.001 to 10 wt% of at least one active ingredient effective against insects.