Cosmetic Composition Using Compatibilizing Oil for UV Absorber Solubility
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Solution Overview
Problem
The solubility of Compound I, a UV absorber, is reduced when blended with polar oils, hydrocarbon oils, and short-chain silicone oils in cosmetics, limiting the usability of such compositions.
Innovation Solution
A cosmetic composition comprising Compound I, a polar oil, a first silicone oil with a kinematic viscosity of 10 cSt or more and lacking a benzene ring, and a compatibilizing oil compatible with both the polar and first silicone oils, which maintains or improves the solubility of Compound I.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If polar oil is blended in a cosmetic in a large amount, then the solubility of Compound I is improved, but the usability of the cosmetic is limited
Solution Approach 1:
The patent introduces a compatibilizing oil as an intermediary substance that mediates between the polar oil and the first silicone oil. This compatibilizing oil has compatibility with both polar oils and silicone oils, allowing Compound I to remain soluble while enabling the use of silicone oils that would otherwise be incompatible, thus improving usability without sacrificing solubility.
Solution Approach 2:
The patent creates a composite oil system combining polar oil, first silicone oil (viscosity 10 cSt or more, lacking benzene ring), and compatibilizing oil. This composite material approach allows the formulation to leverage the UV absorption benefits of Compound I in a multi-component oil system that maintains both solubility and cosmetic usability.
2Stability of the object's composition
If hydrocarbon oil and short-chain silicone oil are blended with polar oil, then compatibility is improved, but solubility of Compound I is reduced
Solution Approach 1:
The patent specifies particular properties for the first silicone oil (viscosity 10 cSt or more, lacking benzene ring) and uses a compatibilizing oil to create localized compatibility zones. This allows the formulation to maintain overall oil compatibility while preserving Compound I solubility in specific micro-environments within the cosmetic composition.
Solution Approach 2:
The patent changes the viscosity parameter of the silicone oil component by selecting first silicone oils with viscosity 10 cSt or more, and adjusts the composition parameters by introducing compatibilizing oil at specific ratios. These parameter changes enable the system to maintain both compatibility and solubility that would not be achievable with conventional short-chain silicone oils.
3Quantity of substance
If a first silicone oil with viscosity of 10 cSt or more is used, then solubility of Compound I is maintained, but the selection of silicone oil is restricted
Solution Approach 1:
The compatibilizing oil acts as a mediator that expands the versatility of silicone oil selection. While the first silicone oil must have viscosity 10 cSt or more and lack benzene rings, the compatibilizing oil compensates for the restricted selection by providing compatibility bridging, allowing formulators to choose from various non-benzene-containing silicone oils with appropriate viscosities.
Data Source
Figure 1~2
AI summary
Provided is a cosmetic composition in which Compound I having a structure of formula (I) below is contained and solubility of Compound I in oil is maintained or improved. A cosmetic composition, comprising Compound I having a structure of formula (I) below: wherein -OA represents an alkoxy group; a polar oil; a first silicone oil having a kinematic viscosity at 25°C of 10 cSt or more and lacking a benzene ring; and a compatibilizing oil compatible with both the polar oil and the first silicone oil.