Hydrocarbon Composition for Silicone-Free Oil-in-Water Emulsion Spreading
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Solution Overview
Problem
Existing cosmetic and dermocosmetic formulations, particularly oil-in-water emulsions, face challenges in providing improved sensory and esthetic properties such as ease of spreading, richness, and attractive appearance without using silicone derivatives, while also considering environmental sustainability and regulatory compliance.
Innovation Solution
Incorporating a mixture of cyclic or acyclic, linear or branched saturated hydrocarbons with at least 95% by weight comprising 15 to 19 carbon atoms into the oil-in-water emulsion, which enhances spreading properties and richness, and provides a matte or shiny appearance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If silicone derivatives are used to improve spreading properties and sensory feel, then ease of spreading and richness are improved, but environmental sustainability and regulatory compliance deteriorate
Solution Approach 1:
The patent changes the chemical composition parameters by replacing silicone derivatives with specific hydrocarbon mixtures (isoparaffins, n-paraffins, and/or cycloparaffins) having controlled carbon atom counts (12-22 for isoparaffins, 10-22 for n-paraffins, 14-20 for cycloparaffins). This parameter change maintains the emollient and spreading properties while improving environmental sustainability and regulatory compliance.
Solution Approach 2:
The patent uses composite hydrocarbon materials comprising multiple types of hydrocarbons (isoparaffins, n-paraffins, and/or cycloparaffins) in specific proportions (isoparaffins: 20-80 wt%, n-paraffins: 10-70 wt%, cycloparaffins: 5-50 wt%). This composite approach provides synergistic effects that replicate the sensory properties of silicone derivatives while meeting environmental requirements.
2Stability of the object's composition
If surfactants and emulsifiers are increased to maintain emulsion stability, then stability is improved, but sensory properties and ease of spreading deteriorate
Solution Approach 1:
The patent optimizes the concentration parameters of surfactants and emulsifiers to reduced ranges (surfactants: 0.1-10 wt%, emulsifiers: 0.1-5 wt%) compared to conventional formulations. The improved spreading properties indicate that this parameter reduction does not compromise stability, likely due to the optimized hydrocarbon phase composition providing inherent stability.
Solution Approach 2:
The patent employs composite emulsion systems combining multiple surfactant types (ionic, nonionic, amphoteric) and emulsifiers in specific proportions. This composite approach enhances the efficiency of each component, allowing reduced overall concentrations while maintaining stability and improving sensory properties.
3Ease of operation
If application intensity and spreading time are reduced for consumer convenience, then ease of operation is improved, but uniform spreading and coverage deteriorate
Solution Approach 1:
The patent modifies the rheological parameters of the emulsion by adjusting viscosity (0.1-100 Pa·s) and elasticity through selective hydrocarbon composition. These parameter changes enable the emulsion to spread uniformly at lower application intensities and shorter times, as the optimized fluid properties facilitate controlled flow and even distribution.
Solution Approach 2:
The patent introduces specific hydrocarbon compounds as intermediary substances that mediate between the emulsion matrix and the skin surface. These intermediaries (isoparaffins, n-paraffins, cycloparaffins) reduce interfacial tension and improve wetting properties, enabling uniform spreading even with rapid application.
Data Source
AI summary
Disclosed is a method for improving the sensorial and/or aesthetic properties of an oil-in-water type emulsion for topical application, the method including an effective quantity of a mixture of saturated cyclic or acyclic, linear or branched hydrocarbons of which at least 95% by weight have between fifteen and nineteen carbon atoms.