Glufosinate Formulation Cold Stability via 1-Methoxy-2-Propanol
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Solution Overview
Problem
Existing glufosinate-containing herbicide formulations lack sufficient cold stability, which can lead to reduced biological impact and effectiveness when stored in unheated conditions.
Innovation Solution
A formulation comprising 8.0 to 50.0 wt.-% of glufosinate or its salt, 19.0 to 50.0 wt.-% of alkyl ether sulfate, 3.0 to 10.0 wt.-% of 1-methoxy-2-propanol, 4.0 to 15.0 wt.-% of dipropylene glycol, 4.0 to 20.0 wt.-% of alkyl polysaccharide, and 20.0 to 50.0 wt.-% of water, which improves the cold stability of glufosinate-containing formulations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by stationary object
If glufosinate-containing formulations are stored in unheated warehouses, then storage cost is reduced, but cold stability deteriorates leading to reduced biological impact
Solution Approach 1:
The patent modifies the chemical composition parameters of the formulation by incorporating specific additives including 1-methoxy-2-propanol, dipropylene glycol, alkyl polysaccharides, and alkyl ether sulfates in optimized concentrations. These parameter changes enable the formulation to maintain its physical and biological stability across a wider temperature range, particularly improving cold stability without compromising herbicidal effectiveness
Solution Approach 2:
The patent creates a composite formulation system that combines glufosinate herbicide with multiple stabilizing additives working synergistically. The composite includes surfactants (alkyl ether sulfate), solvents (1-methoxy-2-propanol, dipropylene glycol), and stabilizing agents (alkyl polysaccharide) that collectively enhance cold stability while maintaining the biological activity of the active ingredient
2Reliability
If existing cold stable formulations are used, then cold stability is improved, but biological impact is reduced
Solution Approach 1:
The patent optimizes the concentration parameters of all formulation components to achieve a balance between cold stability and biological impact. By precisely controlling the amounts of stabilizing additives and adjusting the pH and ionic strength parameters, the formulation maintains high herbicidal effectiveness even when enhanced for cold stability
Solution Approach 2:
The patent introduces intermediary substances that mediate between the active ingredient and the formulation environment. These intermediaries (surfactants and solvents) protect the biological activity of glufosinate while providing the necessary cold stability, acting as a bridge that allows both requirements to be satisfied simultaneously
Data Source
AI summary
The present invention relates to a glufosinate-containing formulation having good cold stability, to the use of 1-methoxy-2-propanol to improve the cold stability of a formulation comprising glufosinate, and to a method for selectively controlling weeds in an area comprising applying an effective amount of the inventive formulation.