Lecithin Microemulsions for Stable Oil Solubilization
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Solution Overview
Problem
Existing oil emulsions, particularly linseed oil emulsions, face challenges in stability due to environmental conditions, leading to limited shelf life and compatibility issues with universal colorants in paint and coating applications, and require high-energy mixing for stabilization.
Innovation Solution
The development of thermodynamically stable microemulsions composed of lecithin, a co-surfactant, and a salt or ester of an acidifier, which can solubilize various oils without high-energy mixing, providing stability and versatility for applications such as cleaning agents, wood preservatives, and coatings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If traditional emulsions are used, then oil and water can be combined, but the emulsion is not kinetically stable and separates under environmental conditions
Solution Approach 1:
The patent replaces high-energy mechanical mixing with a chemical self-assembly process. The microemulsion forms spontaneously when the surfactant system contacts water and oil, eliminating the need for high-shear mixers or homogenizers. This chemical approach creates thermodynamically stable systems that don't separate under environmental conditions.
Solution Approach 2:
The patent uses a composite surfactant system comprising multiple components (ionic and nonionic surfactants, co-surfactants) that work synergistically. This composite approach creates a more stable microemulsion system than single surfactants, enhancing both kinetic and thermodynamic stability while extending shelf life.
2Stability of the object's composition
If high-energy mixing is used to stabilize emulsions, then fine droplet sizes are achieved, but the process requires significant energy input
Solution Approach 1:
The patent replaces high-energy mechanical mixing with a chemical self-assembly process. The microemulsion forms spontaneously when the surfactant system contacts water and oil, eliminating the need for high-shear mixers or homogenizers. This chemical approach creates thermodynamically stable systems that don't separate under environmental conditions.
Solution Approach 2:
The surfactant system performs the emulsification function automatically through self-assembly at the oil-water interface. The amphiphilic molecules spontaneously organize themselves to stabilize the interface, eliminating the need for external mechanical energy input to maintain emulsion stability.
3Adaptability or versatility
If universal colorants are added to water borne systems, then color compatibility is improved, but viscosity changes and pigment separation occur
Solution Approach 1:
The patent uses the microemulsion system as an intermediary vehicle for pigment dispersion. The surfactant molecules at the oil-water interface provide a stabilizing environment for pigment particles, preventing aggregation and separation. This intermediary phase allows universal colorants to remain stable in water-borne systems while maintaining color compatibility.
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 microemulsions form instant, stable emulsions upon addition to water, offering cost savings and improved transportation efficiency, with applications in paints, coatings, and other industries, while maintaining stability across a wide temperature range and being tolerant to pH and electrolytes.
Implementation Method 1
The present invention fulfills these needs and discloses microemulsion concentrates and/or microemulsions that are able to solubilize oils
Implementation Method 2
Microemulsions are self-assembled systems, form spontaneously with no high energy mixing, and have excellent stability
Implementation Method 3
a microemulsion concentrate comprises lecithin, a co-surfactant, and a salt of an acidifier, an ester of an acidifier, or a combination thereof
Implementation Method 4
microemulsion concentrates and/or microemulsions that are able to solubilize oils
Data Source
AI summary
The present disclosure is directed to compositions including a microemulsion comprising a blend of lecithin, a co-surfactant, and a salt of an acidifier, an ester of an acidifier, or combinations thereof. Uses of the compositions are also disclosed.