Agrochemical Composition Solid Base Residue Reduction
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Solution Overview
Problem
The existing agrochemical compositions containing dicamba and sulfonamide herbicides face challenges in efficiently reducing residues in application tanks, leading to time-consuming cleanout procedures and potential damage to subsequent crops due to residual sulfonamide particles.
Innovation Solution
Incorporating a solid base, such as sodium carbonate or potassium phosphate, into the agrochemical composition of dicamba and sulfonamide herbicides to enhance solubility and reduce residue accumulation in spray tanks, allowing for easier cleanout and minimizing damage to subsequent crops.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the amount of sulfonamide herbicide in the mixture is increased to improve herbicidal effectiveness, then the herbicidal spectrum and controlling effect are enhanced, but sulfonamide residues accumulate in the spray tank requiring more water for washing
Solution Approach 1:
The patent changes the chemical form of sulfonamide from free acid to salt form (sodium salt, potassium salt, ammonium salt, or organic amine salt), which fundamentally alters its solubility parameters. This allows higher concentrations to be used while maintaining better solubility and reducing residue accumulation in spray tanks.
Solution Approach 2:
The patent introduces a non-ionic surfactant as an intermediary substance that enhances the solubility and dispersibility of sulfonamide salts in water. This mediator allows the sulfonamide to remain in solution at higher concentrations without precipitating as insoluble residues in the spray tank.
2Ease of manufacture
If conventional agrochemical compositions are used without solid base to simplify formulation, then the formulation process is easier, but residues remain in application tanks leading to time-consuming cleanout procedures
Solution Approach 1:
The patent changes the pH parameter of the agrochemical composition by incorporating a solid base (sodium carbonate, potassium phosphate, or other alkaline substances). This raises the pH to maintain sulfonamide in its salt form, ensuring complete solubility and preventing residue formation that would require time-consuming cleanout procedures.
3Reliability
If sulfonamide herbicides are used to control weeds effectively, then herbicidal activity is improved, but residues may damage subsequent crops sensitive to sulfonamide
Solution Approach 1:
The patent changes the chemical state of sulfonamide from free acid to soluble salt form through pH adjustment using solid base. This ensures complete dissolution and uniform distribution, preventing insoluble residue accumulation that could be carried over to subsequent crops and cause phytotoxicity.
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 addition of a solid base significantly reduces sulfonamide residues in application tanks, simplifying the cleanout process and minimizing crop damage, as evidenced by lower cleanout ratings and reduced injury to sugar beet plants in bioassays.
Implementation Method 1
Incorporating a solid base, such as sodium carbonate or potassium phosphate, into the agrochemical composition of dicamba and sulfonamide herbicides to enhance solubility
Implementation Method 2
the addition of a solid base significantly reduces sulfonamide residues in application tanks, simplifying the cleanout process
Data Source
AI summary
An agrochemical composition containing dicamba or its salt, a sulfonamide herbicide free acid and a solid base. A method of controlling field weeds with the use of the composition. A method of reducing and/or removing agrochemical composition residues in an application tank, as well as a method of preparing an agrochemical composition, including the mixing of a solid base with dicamba or its salt and a sulfonamide herbicide free acid.