High-Powder Cosmetic Emulsion Using Surfactant to Prevent Agglomeration
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Solution Overview
Problem
Cosmetic emulsion and oil dispersion formulations with high powder content face challenges in powder dispersibility and high-temperature fluidity due to wax structure, leading to formulation stability and productivity issues.
Innovation Solution
Incorporating a fatty acid ester surfactant with hydrophilic and lipophilic groups to prevent powder agglomeration, improving dispersibility and fluidity, while maintaining a high powder content.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a large amount of powder is applied to increase powder content, then a powdery finish is achieved, but powder dispersibility and high-temperature fluidity are degraded
Solution Approach 1:
A surfactant is introduced as an intermediary substance between the powder particles and the continuous phase. The surfactant adsorbs onto the powder surface, providing steric or electrostatic repulsion that prevents powder agglomeration and maintains dispersibility even at high powder contents of 20 wt% or more.
Solution Approach 2:
The patent modifies the chemical composition parameters by incorporating specific surfactants and adjusting their concentration. This changes the interfacial properties and interaction forces between powder particles, enabling high powder content while maintaining fluidity and dispersibility through optimized formulation parameters.
2Stability of the object's composition
If a bentonite-based raw material and surfactant are used to improve dispersibility and increase fluidity, then powder dispersibility is improved, but the viscosity of the formulation is increased which degrades fluidity
Solution Approach 1:
The patent optimizes the type and concentration of surfactant to achieve the right balance. By carefully selecting surfactant molecular structure and concentration, the formulation achieves improved powder dispersibility while controlling viscosity to maintain adequate fluidity for manufacturing processes.
3Ease of operation
If a high content of volatile oil is included to achieve smooth spreading, then spreadability is improved, but formulation stability and container sealing are degraded
Solution Approach 1:
The patent replaces volatile oil with non-volatile oil and adjusts the oil phase composition to achieve spreadability through different mechanisms. The reformulated oil phase provides lubrication and smooth application without the evaporation-related stability issues of volatile oils.
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 powder dispersibility, high-temperature fluidity, and skin improvement effects, ensuring smooth spreading and a soft feel, while maintaining formulation stability and productivity.
Implementation Method 1
there is a strong tendency for powder particles to agglomerate with each other due to the structure of the wax, but the powder agglomeration can be prevented by applying a fatty acid ester surfactant
Data Source
AI summary
The present invention relates to an emulsion or oil-dispersion cosmetic composition comprising wax, a powder, and a fatty acid ester surfactant, wherein the powder is included in 20 wt % or more relative to the total weight of the composition, and can provide a composition which contains a high content of powder, has excellent dispersibility by preventing the agglomeration of the powder due to wax, has improved filling properties of the powder, and has excellent fluidity at a high temperature.