Liquid Oily Composition for Cosmetic Film Persistence
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Solution Overview
Problem
Existing cosmetic oils struggle to provide a light feeling, excellent water repellency, and good pigment dispersibility while maintaining persistence and storage stability, often resulting in issues like stickiness, separation, and poor uniformity.
Innovation Solution
A liquid oily composition combining a 2-(1,3,3-trimethylbutyl)-5,7,7-trimethyloctyl ester oil with a specific hydroxyl value and a miscible silicone oil in a 1:1 mass ratio, enhancing water repellency and pigment dispersibility, and improving cosmetic film persistence and storage stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If oils of low viscosity are used, then a light feeling and easy application are achieved, but the persistence of the cosmetic film becomes inferior
Solution Approach 1:
The patent uses a composite oily composition combining silicone oil (providing persistence and water repellency) with ester oil (providing light feeling and spreadability). This composite approach allows the formulation to achieve both easy application and durable film persistence that neither component could achieve alone.
2Duration of action of stationary object
If oils of high viscosity are used, then persistence of the cosmetic film is improved, but the oils are difficult to spread and increase feelings of stickiness
Solution Approach 1:
The patent combines high-viscosity silicone oil (for persistence) with low-viscosity ester oil (for spreadability), creating a balanced composition that achieves both durable film formation and easy application without excessive stickiness.
Solution Approach 2:
The patent optimizes the viscosity parameters of the oily composition by selecting specific silicone oil and ester oil types and adjusting their ratio, thereby achieving the desired balance between spreadability and persistence.
3Duration of action of stationary object
If silicone compounds are used to achieve light feeling and good persistence, then water repellency is improved, but compatibility with other cosmetic raw materials and pigment dispersibility become poor
Solution Approach 1:
The patent creates a composite system where ester oil serves as a compatibility-enhancing component that improves the interaction between silicone oil and other cosmetic ingredients, preventing separation and aggregation while maintaining the water repellency and persistence benefits of silicone.
Solution Approach 2:
The ester oil acts as an intermediary substance that mediates between the silicone oil and other cosmetic components, improving overall compatibility and pigment dispersibility while preserving the functional benefits of silicone compounds.
4Duration of action of stationary object
If film-forming silicone resin is used to create coating film, then cosmetic persistence and stability are improved, but compatibility with blend components requires careful control and pigment dispersibility is not entirely satisfactory
Solution Approach 1:
The patent formulates a composite oily composition that integrates film-forming silicone resin with compatible ester oils and auxiliary agents, creating a unified system that simplifies formulation while maintaining persistence and improving pigment dispersibility.
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 a light feeling, excellent water repellency, and improved pigment dispersibility, ensuring favorable cosmetic film persistence and storage stability, making it suitable for makeup and sunscreen cosmetics.
Implementation Method 1
a silicone oil that is miscible with the component (A) in a mass ratio of 1:1
Implementation Method 2
an ester oil having a 2-(1,3,3-trimethylbutyl)-5,7,7-trimethyloctyl structure in the aliphatic chain, having a hydroxyl value within a range from 5 to 100 mgKOH/g
Data Source
AI summary
The present invention relates to a liquid oily composition and the like, the liquid oily composition containing: a component (A) which is an ester oil having a 2-(1,3,3-trimethylbutyl)-5,7,7-trimethyloctyl structure in the aliphatic chain, having a hydroxyl value within a range from 5 to 100 mgKOH/g, and being liquid at 20° C.; and a component (B) which is a silicone oil that is miscible with the component (A) in a mass ratio of 1:1 and is liquid at 20° C., wherein the mass ratio ((A)/(B)) of the amount of the component (A) with respect to the total composition relative to the amount of the component (B) with respect to the total composition is within a range from 0.05 to 4.