Hydrogenated Triglycerides Stabilize Liquid Cleansing Formulations
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Solution Overview
Problem
Existing liquid personal wash compositions face challenges in maintaining stability over a wide range of storage temperatures due to the crystallization of high melting point components, leading to viscosity drop and phase separation, especially at low temperatures.
Innovation Solution
Incorporating specific amounts (0.1-5% by weight) of hydrogenated triglycerides with an Iodine Value of 0 to less than 20, which can be used alone or in mixtures with other oils, to stabilize the compositions and maintain at least 70% of their original viscosity after cold storage for a week.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high melting point components (long chain fatty acids) are used to provide skin functional benefits, then mildness and moisturization are improved, but low temperature stability deteriorates due to crystallization and viscosity drop
Solution Approach 1:
Hydrogenated triglycerides act as an intermediary substance between the aqueous phase and long chain fatty acids. They modify the crystallization behavior of fatty acids at low temperatures, preventing excessive crystal growth and phase separation while maintaining the moisturization benefits of the fatty acids.
Solution Approach 2:
The invention changes the physical parameters of the oil phase by introducing hydrogenated triglycerides with specific melting points and saturation levels. This modifies the crystallization temperature and viscosity characteristics of the formulation, allowing it to remain stable across a wider temperature range including refrigeration conditions.
2Reliability
If emollient oils (triglycerides and long chain fatty acids) are used for skin conditioning, then mildness and moisturization are improved, but formulation stability deteriorates due to incompatibility between aqueous and oil phases
Solution Approach 1:
Hydrogenated triglycerides serve as a mediator between the hydrophilic surfactant phase and hydrophobic emollient oils. They improve interfacial compatibility and reduce phase separation tendencies, allowing higher levels of skin-beneficial oils to be incorporated while maintaining formulation stability.
Solution Approach 2:
The invention creates a composite oil phase system combining hydrogenated triglycerides with unsaturated emollient oils. This composite structure leverages the stability-providing properties of saturated triglycerides while retaining the skin-conditioning benefits of unsaturated oils, achieving both phase stability and skin functional benefits.
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 use of hydrogenated triglycerides ensures low temperature stability and retention of viscosity in liquid cleansing formulations, preventing phase separation and maintaining product consistency even at 4°C for an extended period.
Implementation Method 1
the crystallization of high melting point components, leading to viscosity drop and phase separation, especially at low temperatures
Implementation Method 2
When the temperature decreases below their melting point, however, the contained solid ingredients generally crystallize
Data Source
AI summary
The present invention provides personal wash compositions where hydrogenated triglyceride oils (defined by IV of 0 to <20) are specifically formulated to provide low temperature stability. Specifically when formulated to have specific concentration of hydrogenated triglycerides, delivered as pure sample or from mixtures of hydrogenated and other triglyceride oils, desirable low temperature stability of formulations is achieved.