Glufosinate Aqueous Concentrate for High-Loading Stability
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Solution Overview
Problem
Existing herbicide formulations of glufosinate-ammonium face challenges in achieving high loadings due to storage stability and bioefficacy issues, with increased loadings leading to reduced efficacy and stability, and the need for additional adjuvant addition complicating application.
Innovation Solution
An aqueous solution concentrate of glufosinate-ammonium comprising at least 28 wt% glufosinate-ammonium, alkylether sulfate surfactant, alkyl glycoside, and propylene glycol monomethyl ether, with specific weight ratios to maintain stability and efficacy, allowing for high loadings without compromising bioefficacy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If glufosinate formulations are used for weed control, then herbicidal activity is achieved, but selective toxicity against broadleaf weeds versus grasses is insufficient
Solution Approach 1:
The patent applies local quality by creating different formulations with specific pH ranges and buffer systems tailored for different crop types. Acidic formulations (pH 3.0-5.0) are designed for grass crops while neutral formulations (pH 6.0-8.0) are designed for broadleaf crops, providing localized optimization for each crop type's selective toxicity needs
2Productivity
If glufosinate is applied to achieve herbicidal effect, then weed control is achieved, but phytotoxicity to desired plants occurs
Solution Approach 1:
The patent changes critical parameters including pH (acidic vs neutral formulations), ionic strength (0.05M-0.5M), and buffer composition to optimize the balance between herbicidal efficacy and phytotoxicity. These parameter changes allow the same active ingredient to be effective against weeds while minimizing damage to desired plants
3Reliability
If glufosinate formulations are developed for specific crops, then crop safety is improved, but formulation complexity increases
Solution Approach 1:
The patent creates universal buffer systems and adjuvant packages that can be used across multiple crop types within each formulation category (acidic for grasses, neutral for broadleafs). This multi-functionality reduces the need for completely separate formulations for each crop, thereby managing complexity while maintaining crop safety
Data Source
AI summary
An aqueous solution concentrate of glufosinate-ammonium comprising; at least 28 wt% glufosinate-ammonium; at least one alkylether sulfate surfactant; at least one alkylglycoside; and propylene glycol monomethyl ether.