Polyoxyethylene Surfactant Alpha-Gel Composition for Stable Emulsions
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Solution Overview
Problem
Existing α-gel compositions for external skin care preparations face issues with stability, viscosity increase, and stickiness, particularly when blended with oil components and moisturizers, and have not been effectively integrated into water-in-oil (W/O) type preparations due to their aqueous phase formation.
Innovation Solution
A novel α-gel forming composition composed solely of polyoxyethylene surfactants, including polyoxyethylene dialkyl ester, alkyl ester, and sterol ether, which forms a stable α-gel phase without crystal deposition or viscosity increase, allowing for refreshing skin application and high moisturizing effects, and can be formulated into both water-in-oil (W/O) and oil-in-water (O/W) types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If α-gel is formed by higher aliphatic alcohol or higher fatty acid and a hydrophilic surfactant to maintain emulsion stability, then emulsion stability is improved, but the preparation causes a slimy feel during application and easily deposits crystals of higher alcohol or higher fatty acid over time
Solution Approach 1:
The invention changes the chemical composition parameters by replacing higher aliphatic alcohols or higher fatty acids with specific polyoxyethylene surfactants (Formula I and Formula II) having controlled carbon chain lengths (C16-C24) and polyoxyethylene chain lengths (n=4-30), thereby eliminating crystal deposition and slimy feel while maintaining emulsion stability
Solution Approach 2:
The invention uses a composite surfactant system combining polyoxyethylene dialkyl ester and/or ether (Formula I) with polyoxyethylene alkyl ester and/or ether (Formula II) in specific ratios, creating a synergistic effect that provides both emulsion stability and pleasant skin feel without the drawbacks of conventional α-gel formulations
2Object-affected harmful factors
If a large amount of oil components and moisturizers are blended to prevent rough skin and provide emollient effect, then skin protection and moisturizing functions are improved, but the preparation easily causes oiliness and stickiness during application
Solution Approach 1:
The invention changes the surfactant parameters to polyoxyethylene surfactants with specific hydrophobic and hydrophilic balance, enabling the formulation to incorporate oil components and moisturizers effectively while preventing oiliness and stickiness through controlled micelle formation and reduced aqueous phase orientation between lamellar layers
Solution Approach 2:
The polyoxyethylene surfactants act as intermediaries between oil components and water, forming stable micelles and emulsions that distribute oil and moisturizers uniformly throughout the preparation, preventing excessive surface accumulation that causes stickiness while maintaining skin protection functions
3Stability of the object's composition
If α-gel formed by higher aliphatic alcohols or higher fatty acids and a hydrophilic surfactant is blended to maintain emulsion stability, then a large amount of aqueous phase is oriented between lamellar layers making evaporation difficult, but this results in persistent stickiness during application
Solution Approach 1:
The invention changes the surfactant molecular structure parameters by using polyoxyethylene surfactants with controlled ethylene oxide chain lengths (n=4-30), which modify the lamellar layer spacing and reduce aqueous phase orientation, thereby facilitating evaporation and eliminating persistent stickiness while maintaining emulsion stability
4Object-affected harmful factors
If conventional α-gel composition is used in water-in-oil (W/O) type external skin care preparations to provide high skin protection effect, then occlusion effect is improved, but α-gel composition has never been effectively blended into W/O type preparations because it is basically formed in an aqueous phase
Solution Approach 1:
The invention changes the surfactant parameters to polyoxyethylene surfactants with balanced hydrophobic and hydrophilic properties that enable the α-gel to form and stabilize in both aqueous and oily phases, allowing effective incorporation into W/O type preparations while maintaining skin protection effects through occlusion
Solution Approach 2:
The polyoxyethylene surfactant system provides universal compatibility with both O/W and W/O emulsion types, allowing the same α-gel forming composition to be used across different preparation types and deliver multifunctional benefits including emulsion stabilization, skin protection, and pleasant feel
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 α-gel composition provides a refreshing, non-sticky skin application with high moisturizing effects and stability, preventing viscosity increase and crystal deposition, and enables effective emulsification in both W/O and O/W forms, enhancing skin care performance.
Implementation Method 1
a novel α-gel forming composition composed solely of polyoxyethylene surfactants, including polyoxyethylene dialkyl ester, alkyl ester, and sterol ether, which forms a stable α-gel phase
Implementation Method 2
enables effective emulsification in both W/O and O/W forms
Data Source
AI summary
The present invention addresses the problem of providing an α-gel formation composition and an α-gel composition that uses the α-gel formation composition, wherein said compositions are highly stable, do not deposit crystals, become more viscous over time, and, when used in a preparations for external use, are refreshing during application and have high skin-moisturizing action after application. A gel composition that includes a polyoxyethylene dialkyl ester and/or a polyoxyethylene dialkyl ether, a polyoxyethylene alkyl ester and/or a polyoxyethylene alkyl ether, and, preferably, a polyoxyethylene sterol ether and water.