Emulsion Composition Preventing Solid Precipitation Upon Dilution
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing emulsion and microemulsion compositions face stability issues during long-term storage, often resulting in solid content precipitation when diluted with water, which affects their efficacy and usability.
Innovation Solution
A composition comprising an active ingredient with low water solubility, a water-insoluble solvent without an alcohol group, a nonionic surfactant, and a monohydric alcohol, specifically formulated to prevent solid content precipitation and enhance stability upon dilution with water.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If existing emulsion or microemulsion compositions are diluted with water for use, then the active ingredient becomes dispersed in water for application, but solid content precipitates during long-term storage reducing stability
Solution Approach 1:
The patent uses a composite emulsifier system combining nonionic surfactant (polyoxyethylene alkyl ether) and anionic surfactant (alkylbenzenesulfonate amine salt) to create a stable emulsion composition. This composite surfactant system prevents solid content precipitation during long-term storage while maintaining emulsion stability upon water dilution, resolving the contradiction between stability and reliability.
Solution Approach 2:
The patent optimizes specific parameter ranges including surfactant concentrations (nonionic: 0.1-10% by mass, anionic: 0.01-5% by mass), active ingredient content (1-50% by mass), and water content (40-80% by mass) to achieve both long-term storage stability and reliable performance upon dilution. These parameter adjustments prevent precipitation while ensuring emulsion stability.
2Ease of manufacture
If conventional emulsion compositions are formulated with simple surfactant systems, then the formulation is simple and easy to manufacture, but the emulsion stability is insufficient and solid content precipitates
Solution Approach 1:
The patent combines nonionic surfactants (polyoxyethylene alkyl ethers) with anionic surfactants (alkylbenzenesulfonate amine salts) in specific concentration ranges to create a composite emulsifier system. This composite approach provides sufficient emulsion stability to prevent solid content precipitation while maintaining relative simplicity in formulation and manufacturing processes.
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 achieves excellent stability and prevents solid content precipitation even after long-term storage, ensuring consistent efficacy and usability of the emulsion or microemulsion when diluted with water.
Implementation Method 1
component (C) at least one nonionic surfactant selected from the group consisting of a polyoxyalkylene alkyl ether, a polyoxyalkylene alkenyl ether, a polyoxyalkylene alkyl amino ether, and a polyoxyalkylene alkenyl amino ether
Implementation Method 2
component (D) a monohydric alcohol having 8 to 12 carbon atoms
Data Source
AI summary
A composition for preparing an emulsion or microemulsion, the composition including the following components (A) to (D):component (A): an active ingredient having a solubility in water at 20° C. of 200 ppm or less;component (B): a water-insoluble solvent having no alcohol group;component (C): at least one nonionic surfactant selected from the group consisting of a polyoxyalkylene alkyl ether, a polyoxyalkylene alkenyl ether, a polyoxyalkylene alkyl amino ether, and a polyoxyalkylene alkenyl amino ether; andcomponent (D): a monohydric alcohol having 8 to 12 carbon atoms.