Crosslinked Organopolysiloxane Emulsifier for Cosmetic Stability
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Solution Overview
Problem
Current emulsifier systems are inadequate for stabilizing solid particles in cosmetic, dermatological, and pharmaceutical formulations, particularly in decorative cosmetics and sun protection, and struggle with formulating W/O formulations with diverse textures and organic UV-filters.
Innovation Solution
A mixture composition of crosslinked organopolysiloxanes with organopolysiloxane units linked by a polyether building block and bridged by a siloxane, which acts as a high-performance emulsifier, stabilizing pigment and particle systems while providing a pleasant skin feel and maintaining formulation stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional emulsifier systems are used, then formulation stability is maintained, but the ability to stabilize solid particles and challenging compounds is insufficient
Solution Approach 1:
The invention combines two distinct crosslinked organopolysiloxane components with different structural features (polyether-linked units and siloxane-bridged units) to create a composite emulsifier system. This composite structure integrates the particle-stabilizing capability of one component with the emulsification performance of the other, achieving both improved versatility and reliability simultaneously
2Reliability
If emulsifiers with high stabilization capability are used, then particle stability improves, but skin feeling becomes less pleasant
Solution Approach 1:
The emulsifier system exhibits different functional properties at different molecular levels: the crosslinked organopolysiloxane units provide strong particle stabilization capability, while the polyether and siloxane bridging units maintain skin compatibility and pleasant feel. This local differentiation of functional qualities within the molecular structure resolves the contradiction between high stabilization and comfortable skin feeling
3Device complexity
If single-component emulsifiers are used, then formulation simplicity is maintained, but performance across diverse formulations is insufficient
Solution Approach 1:
The emulsifier system is divided into two distinct crosslinked organopolysiloxane components, each with specific structural characteristics. This segmentation allows each component to perform its specialized function optimally while working synergistically, achieving high versatility across diverse formulations including decorative cosmetics, sun protection, and W/O formulations with organic UV-filters
Data Source
AI summary
Mixture compositions contain A) crosslinked organopolysiloxanes having organopolysiloxane units linked by a building block containing polyether groups, and B) crosslinked organopolysiloxanes having organopolysiloxane units bridged by a bridging siloxane. The mixture compositions are useful, for example, as an emulsifier, for stabilizing formulations, and for dispersion of solid pigments.