Emulsion Composition Stabilizing Phytosteryl Crystals
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Solution Overview
Problem
Existing emulsion compositions containing macadamia nut oil fatty acid phytosteryl and methyl polysiloxane face issues with crystal precipitation, leading to poor formulation stability and inadequate resilient and emollient feel.
Innovation Solution
Incorporating specific oils in a predetermined ratio with macadamia nut oil fatty acid phytosteryl, such as glyceryl tri(2-ethylhexanoate), methylphenyl polysiloxane, cetyl ethylhexanoate, and tripropylene glycol pivalate, to inhibit crystal precipitation and enhance stability and feel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If macadamia nut oil fatty acid phytosteryl and methyl polysiloxane are contained in the emulsion composition, then smooth texture and resilient feel are provided, but crystal precipitation occurs leading to poor formulation stability
Solution Approach 1:
The patent introduces specific oil components (glyceryl tri(2-ethylhexanoate), methylphenyl polysiloxane, cetyl ethylhexanoate, tripropylene glycol pivalate) as intermediary substances that mediate between macadamia nut oil fatty acid phytosteryl and water. These oils act as solvents and stabilizers, preventing crystal precipitation while maintaining the smooth texture and resilient feel properties. The specific oil components create a stable emulsion system that prevents phase separation and crystal formation.
Solution Approach 2:
The patent changes the chemical and physical parameters of the emulsion system by specifying precise content ratios of macadamia nut oil fatty acid phytosteryl (0.01-5% by mass) and the specific oil components. By controlling these parameters within defined ranges, the formulation achieves optimal stability while maintaining the desired sensory properties. The parameter optimization prevents crystal precipitation through controlled concentration levels.
2Reliability
If macadamia nut oil fatty acid phytosteryl is contained to provide resilient feel, then emollient effect is improved, but crystal precipitation leads to formulation instability
Solution Approach 1:
The specific oil components serve as intermediary substances that facilitate the incorporation of macadamia nut oil fatty acid phytosteryl into the emulsion system without causing crystal precipitation. These oils act as solvents that maintain the phytosteryl in a stable, non-crystalline state while preserving the emollient effect and skin-conditioning properties.
Solution Approach 2:
The patent creates a composite emulsion system combining multiple components: macadamia nut oil fatty acid phytosteryl, methyl polysiloxane, and specific oil components (glyceryl tri(2-ethylhexanoate), methylphenyl polysiloxane, cetyl ethylhexanoate, tripropylene glycol pivalate). This composite formulation leverages the synergistic effects of different materials to achieve both stability and emollient properties simultaneously.
3Stability of the object's composition
If specific oil components are added in predetermined ratio to prevent crystal precipitation, then formulation stability is improved, but the complexity of the formulation increases
Solution Approach 1:
The patent simplifies the formulation by defining specific content ratios and ranges for the oil components rather than requiring complex multi-component systems. By optimizing the concentration parameters of macadamia nut oil fatty acid phytosteryl (0.01-5% by mass) and the specific oils, the formulation achieves stability with manageable complexity. The parameter specifications provide clear guidance for manufacturing while maintaining formulation simplicity.
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 emulsion composition maintains smoothness and freshness while preventing crystal formation, providing superior resilient and emollient properties and improved stability.
Implementation Method 1
Bases containing silicone oils such as methyl polysiloxane are known to provide a smooth feeling during use
Implementation Method 2
when contained in an agent for external application on skin together with active ingredients such as vitamin A, vitamin E or their derivatives, they deliver those active ingredients to deep stratum corneum
Implementation Method 3
containing one kind of the above mentioned phytosterol derivatives, macadamia nut oil fatty acid phytosteryl, unfortunately causes a problem that crystals of macadamia nut oil fatty acid phytosteryl precipitate
Implementation Method 4
provides soft films to give a moderate resilient feel
Data Source
AI summary
Provided is an emulsion composition which has smooth usability by virtue of methyl polysiloxane while also improving stability by preventing crystal precipitation of macadamia nut oil fatty acid phytosteryl, and which provides an excellent firm feeling and emollient property. The emulsion composition comprises (A) macadamia nut oil fatty acid phytosteryl, (B) methyl polysiloxane, and (C) one or two or more oil components selected from the group comprising glyceryl tri(2-ethylhexanoate), methyl phenyl polysiloxane, cetyl ethylhexanoate, pentaerythrityl tetraethylhexanoate, and tripropylene glycol pivalate, wherein the mixing ratio of (A) to (C) is in the range of 1:3 to 1:200.