Herbicidal Composition Synergy 3-Phenyluracils
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Solution Overview
Problem
Current herbicidal compositions comprising 3-phenyluracils and 3-sulfonylisoxazolines often fail to effectively control harmful plants without damaging desirable crop plants, such as cotton, oilseed rape, and certain graminaceous plants, necessitating reduced application rates that compromise weed control efficacy.
Innovation Solution
Formulating herbicidal compositions that combine 3-phenyluracils of specific structural formulas with 3-sulfonylisoxazolines and optional safeners, which are applied in a way that enhances herbicidal activity through synergism, allowing for lower application rates while improving compatibility with useful plants.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If 3-phenyluracils and 3-sulfonylisoxazolines are applied at standard rates to control harmful plants, then weed control efficacy is improved, but damage to useful crop plants increases
Solution Approach 1:
The patent combines 3-phenyluracils and 3-sulfonylisoxazolines into a single herbicidal composition, leveraging synergistic effects to enhance weed control efficacy while reducing the need for high application rates that would damage crop plants. This merging of two active compounds allows for more precise and effective weed management at lower concentrations.
Solution Approach 2:
The patent modifies the chemical structure and concentration parameters of the herbicidal composition by incorporating specific substituents (R1-R9 variables) and adjusting the ratio of 3-phenyluracil to 3-sulfonylisoxazoline, thereby optimizing the balance between weed control effectiveness and crop plant safety.
2Object-generated harmful factors
If application rates are reduced to protect useful plants, then crop plant compatibility is improved, but weed control activity is compromised
Solution Approach 1:
By merging 3-phenyluracils and 3-sulfonylisoxazolines into a combined composition, the patent achieves synergistic enhancement of weed control activity, allowing effective weed management at lower application rates that do not compromise crop plant compatibility. The combination creates a more efficient herbicidal system than either compound alone.
Solution Approach 2:
The patent creates a composite herbicidal composition containing both 3-phenyluracil and 3-sulfonylisoxazoline compounds, where the synergistic interaction between the two active ingredients produces enhanced weed control efficacy at reduced concentrations, thereby protecting crop plants from damage.
3Device complexity
If single herbicide compounds are used to simplify formulation, then device complexity is reduced, but herbicidal activity and selectivity are insufficient
Solution Approach 1:
The patent merges two herbicidal compounds (3-phenyluracil and 3-sulfonylisoxazoline) into a single formulated composition, creating a synergistic system that enhances both herbicidal activity and selectivity. This combined approach provides superior weed control and crop safety compared to using either compound alone, while maintaining practical formulation simplicity.
Data Source
AI summary
A herbicidal composition comprisinga) at least one 3-phenyluracils of formula Iwherein the variables R1 to R7 are as defined in the specification; andb) at least one 3-sulfonylisoxazoline of formula IIwherein the variables R8 and R9 are as defined in the specification; andc) optionally at least one safener III selected from the group as defined in the specification.