Pesticidal Composition pH Control for Thermal Degradation
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Solution Overview
Problem
The existing pesticidal compositions containing a compound represented by formula (I) face challenges with degradation resistance, particularly in maintaining the effectiveness of the compound over time, especially when exposed to high temperatures.
Innovation Solution
A liquid pesticidal composition is developed comprising the compound (I), a herbicidal active salt, a surfactant, and water, with a pH value between 3.5 and 8.8, and an organic solvent with low water solubility, forming an oil-in-water emulsion to enhance stability and resistance to degradation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the compound (I) is formulated in a conventional pesticidal composition, then it provides herbicidal activity, but it suffers from poor degradation resistance and low residual rate when exposed to high temperatures
Solution Approach 1:
The patent applies parameter changes by carefully controlling the pH value within a specific range (3.5-8.8) and selecting appropriate concentrations of surfactants and organic solvents. These parameter adjustments create an optimal chemical environment that stabilizes compound (I) against thermal degradation while maintaining its herbicidal efficacy over time.
Solution Approach 2:
The patent creates a composite pesticidal composition by combining compound (I) with multiple auxiliary substances including surfactants (anionic, cationic, nonionic, or amphoteric), organic solvents, and water. This composite formulation works synergistically to protect the active compound from degradation while enhancing its persistence and effectiveness.
2Stability of the object's composition
If the pH value is adjusted to improve degradation resistance, then the stability of compound (I) improves, but the formulation complexity increases
Solution Approach 1:
The patent simplifies the formulation complexity by establishing a clear pH range (3.5-8.8) that can be easily monitored and controlled during manufacturing. This parameter specification provides a straightforward guideline for formulators to achieve stable compositions without requiring complex multi-step adjustment procedures.
Solution Approach 2:
The patent uses surfactants as intermediary substances that help maintain the desired pH environment and stabilize compound (I). These surfactants act as mediators between the active ingredient and the aqueous medium, facilitating stability without requiring complex pH adjustment mechanisms.
3Reliability
If organic solvents with low water solubility are used to form oil-in-water emulsion, then the degradation resistance improves, but the manufacturing precision requirements increase
Solution Approach 1:
The patent employs surfactants as intermediary agents that facilitate the formation of stable oil-in-water emulsions. These surfactants reduce the interfacial tension between the organic solvent and water, enabling easy emulsion formation without requiring high manufacturing precision or specialized equipment.
Solution Approach 2:
The patent specifies appropriate concentration ranges for organic solvents and surfactants that optimize emulsion stability while simplifying manufacturing. By defining these parameter ranges, the patent makes it easier to achieve consistent emulsion formation without requiring extremely precise control during production.
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 favorable degradation resistance of the compound (I), maintaining a high residual rate even after storage at elevated temperatures, ensuring effective herbicidal performance.
Implementation Method 1
a surfactant and water, wherein a pH value at 25° C. is higher than 3.5 and lower than 8.8
Implementation Method 2
an organic solvent having a water solubility at 25° C. of 10 mass % or less, a surfactant and water
Data Source
AI summary
Provided is a pesticidal composition comprising a compound represented by the formula (I), a herbicidal active salt, a surfactant and water, wherein a pH value at 25° C. is higher than 3.5 and lower than 8.8.