Superabsorbent Polymer and Silicone Elastomer Skin Care Composition
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Solution Overview
Problem
There is a continuous need for skin care compositions that not only provide superior stability and appearance but also offer long-lasting benefits, particularly in protective products like sunscreens, where existing formulations often lack in both stability and aesthetic appeal.
Innovation Solution
A thickened aqueous composition containing 0.1% to 4% superabsorbent polymer and 0.1% to 20% silicone elastomer, combined with water, which enhances stability and reduces shine, resulting in a smoother skin appearance when applied.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If conventional thickener systems are used to thicken aqueous compositions, then the composition achieves adequate viscosity, but the stability over time deteriorates
Solution Approach 1:
The patent employs a composite thickening system combining superabsorbent polymer (0.1-4% by weight) with silicone elastomer (0.1-20% by weight). This composite approach creates a synergistic effect where the superabsorbent polymer provides water binding and thickening while the silicone elastomer contributes to film formation and stability, together delivering superior time-dependent stability compared to conventional single-thickener systems.
Solution Approach 2:
The patent optimizes specific concentration parameters of the thickening agents to achieve enhanced stability. By controlling the superabsorbent polymer at 0.1-4% and silicone elastomer at 0.1-20% by weight, the formulation achieves optimal viscosity and stability balance, preventing degradation over time while maintaining product performance consistency.
2Illumination intensity
If conventional thickener systems are used, then the composition achieves adequate viscosity, but the skin appearance becomes overly shiny and reflective
Solution Approach 1:
The combination of superabsorbent polymer and silicone elastomer creates a composite coating system that modifies light interaction with skin. The silicone elastomer component specifically contributes to reducing surface reflectivity by forming a matte-finish film, while the superabsorbent polymer maintains hydration without adding shine, together achieving the desired non-reflective appearance.
Solution Approach 2:
The patent creates different functional zones within the coating: the silicone elastomer provides the surface layer with light-diffusing properties that reduce shine, while the superabsorbent polymer operates in the deeper hydrated layer to maintain skin moisture. This local functional differentiation allows simultaneous control of appearance and skin condition.
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 provides improved stability over time and reduces shine, enhancing the skin's appearance by creating a less reflective coating, thus making the skin look smoother.
Implementation Method 1
a thickened aqueous composition containing from 0.1% to 4%, by weight, of an superabsorbent polymer
Implementation Method 2
when applied to human skin provide a less reflective coating which tends to make the skin look smoother
Data Source
AI summary
A thickened aqueous composition containing from about 0.01% to about 10%, by weight, of an superabsorbent polymer, from about 0.1% to about 20%, of a silicone elastomer; and from about 20% to about 98% of water.