Stable Agrochemical Composition with Integrity Retaining System
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Solution Overview
Problem
Current water dispersible granule (WDG) formulations of hydrophobic agrochemicals face challenges with disintegration, attrition, and dusting, which affect their stability and efficacy in insecticide applications, leading to potential health hazards and reduced effectiveness.
Innovation Solution
A stable agrochemical composition comprising a diamide insecticide combined with a disintegrant and at least two anionic surfactants, formulated as water dispersible granules, which enhances suspensibility, dispersibility, and attrition resistance, and controls foaming behavior.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If hydrophobic agrochemicals are formulated as water dispersible granules, then storage stability and handling safety are improved, but disintegration performance deteriorates
Solution Approach 1:
The patent uses a composite granule structure containing hydrophobic agrochemical particles embedded in a matrix of hydrophilic carriers (such as attapulgite, bentonite, or starch). This composite structure allows the granule to maintain structural integrity for stable storage while enabling controlled disintegration in water through the hydrophilic component, thus resolving the contradiction between storage stability and disintegration performance.
2Reliability
If the amount of active ingredient in WDG is reduced, then formulation stability is improved, but efficacy deteriorates
Solution Approach 1:
The patent optimizes the particle size distribution, surface area, and porosity parameters of the agrochemical particles and carriers. By controlling these physical parameters, the formulation achieves high stability with reduced active ingredient content while maintaining efficacy through enhanced surface area-to-volume ratio and improved water contact efficiency.
3Ease of manufacture
If granules have low resistance to attrition, then ease of manufacture is improved, but dusting increases
Solution Approach 1:
The patent employs a binding agent matrix that forms a flexible yet cohesive shell around the agrochemical particles. This shell provides sufficient mechanical strength to prevent dusting during handling and shipping, while being formed through a simple granulation process that maintains ease of manufacture. The binding agents (such as starch or polyvinyl alcohol) create this protective layer during conventional granulation operations.
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 maintains the integrity of the diamide insecticide, ensuring effective dispersion and stability, reducing dusting and health hazards, while maintaining high suspensibility and attrition resistance, thus enhancing the efficacy of the insecticide formulation.
Implementation Method 1
a water dispersible granular (WDG) formulation is a solid formulation that generally incorporates the active ingredient into a granule which disperses or dissolves quickly when added to water in the spray tank to give a fine particle suspension
Implementation Method 2
an integrity retaining system comprising a disintegrant and at least two anionic surfactants
Implementation Method 3
WDG formulations provide a system for delivering solid active ingredients to their target and allow for the production of highly concentrated formulations which are wettable and readily disintegrate on contact with water
Implementation Method 4
rapid disintegration is important for the efficient dispersion of WDG formulations in water
Data Source
AI summary
Disclosed herein is a stable agrochemical composition including: a) at least one diamide insecticide; and b) an integrity retaining system including a disintegrant and at least two anionic surfactants. Also disclosed is a process of preparing the agrochemical composition and a method of controlling plant pests with the agrochemical composition.