Flumioxazin Crystal Weed Control Composition
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Solution Overview
Problem
Current weed control methods lack an effective composition that provides a high herbicidal effect against a wide range of weeds, necessitating the development of a composition that combines specific herbicides for enhanced efficacy.
Innovation Solution
A weed control composition comprising crystals of flumioxazin with specific diffraction peaks and one or more herbicidal compounds from a designated group, including acetolactic acid synthase inhibitors, acetyl CoA carboxylase inhibitors, and other herbicides, applied to soil where weeds are grown or to be grown.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single herbicide is used for weed control, then the composition is simple and easy to apply, but the herbicidal effect against a wide range of weeds is insufficient
Solution Approach 1:
The patent combines flumioxazin with one or more herbicides from Group B (including ALS inhibitors, ACCase inhibitors, HPPD inhibitors, and other herbicides) to create a composition that achieves high herbicidal efficacy against a wide range of weeds. This merging of multiple herbicides with different modes of action resolves the contradiction by providing broad-spectrum weed control while maintaining practical applicability through a defined formulation structure.
Solution Approach 2:
The invention creates a composite herbicidal composition where flumioxazin serves as the base herbicide and is combined with specific compounds from Group B. This composite approach allows the composition to leverage the complementary herbicidal activities of different compounds, achieving reliable weed control across multiple weed species while maintaining a structured formulation that balances complexity and effectiveness.
2Adaptability or versatility
If multiple herbicides are combined to control a wide range of weeds, then the herbicidal effect is enhanced, but the composition becomes more complex
Solution Approach 1:
The patent merges flumioxazin with specifically selected Group B herbicides to achieve broad-spectrum weed control. The combination includes herbicides from different chemical classes (ALS inhibitors, ACCase inhibitors, HPPD inhibitors, etc.) that target different weed species, thereby enhancing adaptability while maintaining a manageable composition structure through deliberate selection and formulation.
Solution Approach 2:
The composition achieves multi-functionality by combining flumioxazin with herbicides from Group B that have different modes of action and target different weed species. This universal approach allows a single composition to control diverse weed types including grasses, broadleaf weeds, and woody plants, thereby enhancing versatility without requiring multiple separate formulations.
3Reliability
If flumioxazin is used in non-crystalline form, then the formulation is easier to prepare, but the herbicidal activity and stability are reduced
Solution Approach 1:
The patent specifies particular crystalline forms of flumioxazin characterized by defined X-ray diffraction patterns (specific 2θ peak positions). By controlling the crystal structure parameters, the invention achieves enhanced herbicidal activity and stability. The crystalline form is prepared through controlled crystallization processes that produce the specified polymorph, balancing manufacturing feasibility with improved performance characteristics.
Solution Approach 2:
The invention utilizes the phase transition from amorphous to crystalline form of flumioxazin to enhance herbicidal activity. The specified crystalline polymorph is obtained through controlled crystallization from solution, where the compound transitions from a less ordered phase to a highly ordered crystalline structure with defined diffraction characteristics. This phase transition improves stability and activity while maintaining practical manufacturability through established crystallization techniques.
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 effectively controls a wide range of weeds in crop fields, perennial crops, and non-crop lands, demonstrating a high herbicidal effect and efficient weed management.
Implementation Method 1
a composition comprising crystal of flumioxazin which shows a powder X-Ray diffraction pattern having diffraction peaks with 2θ values (°) shown in Table 1
Implementation Method 2
said pattern being obtained by CuKα rays diffraction analysis
Data Source
AI summary
The present invention relates to a composition comprising crystal of flumioxazin which shows a powder X-Ray diffraction pattern having diffraction peaks with 2θ values (°) shown in Table 1 of the specification, the pattern being obtained by CuKα rays diffraction analysis, and one or more herbicidal compounds selected from the group B-1, B-2, B-3, B-4, B-5, B-6, B-7, B-8, B-9, B-10, B-11 and B-12 described in the specification. According to the present invention, a wide range of weeds can be controlled in a crop field, land under perennial crops, or non-crop land.