Mixed Agrochemical Emulsion with Nonionic Surfactant for Stability
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Solution Overview
Problem
Chloropicrin-based mixed pesticide preparations face challenges in maintaining long-term storage stability due to acidolysis and hydrolysis of organic phosphorous pesticides, making it difficult to ensure the efficacy and longevity of the formulation.
Innovation Solution
A mixed agrochemical emulsion composition comprising chloropicrin, an organic phosphorous pesticide with a nitrogenated heterocyclic group, and a non-ionic surfactant, particularly with a polyoxy C2-C4 alkylene aryl ether structure, which inhibits degradation and enhances emulsifying properties, ensuring stability and ease of use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If chloropicrin is mixed with organic phosphorous pesticide to achieve insect pest control, then the pest control effect is improved, but the storage stability deteriorates due to acidolysis and hydrolysis
Solution Approach 1:
A non-ionic surfactant is introduced as an intermediary substance between chloropicrin and organic phosphorous pesticide. The surfactant forms a protective emulsion system that prevents direct interaction between the two active ingredients, thereby inhibiting acidolysis and hydrolysis while maintaining their individual pest control functions. This mediator approach allows the mixture to achieve both enhanced efficacy and improved storage stability.
Solution Approach 2:
The invention creates a composite emulsion formulation combining chloropicrin, organic phosphorous pesticide with nitrogenated heterocyclic group, and non-ionic surfactant. This composite material structure provides synergistic effects where the surfactant matrix protects the active ingredients from degradation while enabling their combined pest control activities, resolving the contradiction between efficacy enhancement and stability maintenance.
2Stability of the object's composition
If organic phosphorous pesticide is used alone, then storage stability is maintained, but pest control efficacy is insufficient
Solution Approach 1:
The invention merges multiple active ingredients (chloropicrin and organic phosphorous pesticide) into a single emulsion formulation. By combining these substances with complementary modes of action, the formulation achieves enhanced pest control efficacy against both soilborne pathogens and aboveground pests, while the non-ionic surfactant ensures the mixture maintains adequate storage stability.
Solution Approach 2:
The mixed emulsion formulation achieves multi-functionality by providing both soil fumigation activity (from chloropicrin) and insecticidal activity (from organic phosphorous pesticide). This universal solution replaces the need for separate applications of different pesticides, enhancing overall pest control efficacy while maintaining practical storage stability through the surfactant system.
3Reliability
If conventional pesticide formulations are used, then application requires cumbersome procedures, but ease of use is reduced
Solution Approach 1:
The invention changes the physical state and formulation parameters of the active ingredients by converting them into an emulsion system. This parameter change allows the formulation to be easily diluted with water and applied through conventional irrigation or spraying equipment, dramatically improving ease of operation while maintaining the reliable disinfection and pest control effects of the active ingredients.
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 long-term storage stability with residual ratios of organic phosphorous pesticides exceeding 80% after 14 days at 54°C and maintains excellent emulsifiability, simplifying agricultural applications by allowing easy mixing with water for efficient spraying.
Implementation Method 1
a mixed agrochemical emulsion composition comprising chloropicrin, an organic phosphorous pesticide with a nitrogenated heterocyclic group, and a non-ionic surfactant
Implementation Method 2
a non-ionic surfactant, particularly with a polyoxy C2-C4 alkylene aryl ether structure, which inhibits degradation and enhances emulsifying properties
Data Source
AI summary
The present invention relates to a mixed agrochemical emulsion composition comprising: an organic phosphorous pesticide represented by formula (I)(wherein, R1 represents a C1-4 linear or branched alkyl group; R2 represents a C1-4 linear or branched alkyl group; R3 represents a nitrogenated heterocyclic group which may have a substituent or a group —OR4 (wherein R4 represents a nitrogenated heterocyclic group which may have a substituent; and X and Y each independently represent an oxygen atom or a sulfur atom, wherein Y is a sulfur atom when X is an oxygen atom, and Y is an oxygen atom when X is a sulfur atom); chloropicrin; and a nonionic surfactant. The composition has excellent storage stability and excellent emulsifying properties in water and can be sprayed and applied conveniently by diluting the composition with water, in spite of a fact that both chloropicrin and the organic phosphorous pesticide, which are effective for the control of pests, are contained.