Linear Paraffin Volatile Oil Cyclomethicone Replacement
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Solution Overview
Problem
There is a need for a volatile oily composition that replicates the physicochemical and sensorial characteristics of cyclomethicones to serve as a substitute in cosmetic products, addressing concerns about the environmental and health impacts of traditional volatile silicones.
Innovation Solution
A mixture of linear paraffins (C8, C10, C12, and C14) with a non-volatile oil, providing similar volatility, emollient properties, and a soft, non-greasy skin texture, which can partially or completely replace cyclomethicones in cosmetic formulations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If volatile silicones (cyclomethicones) are used in cosmetic formulations, then the desired volatility characteristics and sensorial properties (soft, dry, non-greasy texture) are achieved, but environmental and health concerns arise
Solution Approach 1:
The patent changes the chemical composition parameters by using linear paraffins with specific carbon atom ratios (C8-C12: 70-99%, C14-C24: 1-30%) to replicate the volatility and sensorial properties of cyclomethicones without the associated environmental and health risks
Solution Approach 2:
The invention creates a substitute composition that copies the essential characteristics (volatility range, emollient properties, skin feel) of cyclomethicones using linear paraffins, achieving equivalent performance without the harmful effects
2Speed
If isoparaffins and fatty acid esters are used as cyclomethicone substitutes, then volatility characteristics are improved, but the linear structure and non-greasy texture equivalent to cyclomethicones is not achieved
Solution Approach 1:
The patent specifies precise local quality requirements for the paraffin mixture, including the linear structure and specific carbon atom distribution (C8-C12 predominating with C14-C24), to achieve the characteristic non-greasy, soft skin feel of cyclomethicones
Solution Approach 2:
The invention uses a composite mixture of linear paraffins with different carbon chain lengths (C8-C12 and C14-C24) to combine appropriate volatility with the desired sensorial properties, achieving a balance that neither component alone could provide
3Stability of the object's composition
If a mixture of paraffins with broad carbon atom range is used, then viscosity and stability are improved, but the volatility characteristics equivalent to cyclomethicones are reduced
Solution Approach 1:
The patent segments the paraffin mixture into two distinct ranges: C8-C12 (70-99%) for volatility and C14-C24 (1-30%) for stability, creating a balanced composition that achieves both rapid evaporation and formulation stability
Data Source
AI summary
A volatile oil composition includes a vehicle and a silicone elastomer, wherein the vehicle is a volatile oily composition of (a) from 50 to 100% by weight of a mixture of linear paraffins including (i) 90 to 99% by weight of at least one linear paraffin selected from C8, C10, C12 paraffins and mixtures thereof, and (ii) 1 to 10% by weight of a C14 linear paraffin, and (b) from 0 to 50% by weight of at least one non-volatile oil. The composition may be used in cosmetic compositions such as for making up and/or caring for and/or protecting skin, lips, eyelashes and/or nails, and in antiperspirant/deodorant compositions.