Silicone Gel Cosmetic Composition for Stable Emulsion Spreadability
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Solution Overview
Problem
Existing cosmetics using cross-linked polyglycerol-modified silicone gels lack an optimal base oil, leading to issues with usability, applicability, and emulsion stability.
Innovation Solution
A cosmetic formulation incorporating a cross-linked polyglycerol-modified silicone swollen with specific oil agents, such as hydrocarbon oils and ester oils, to enhance usability and emulsion stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cross-linked polyglycerol-modified silicone gel is used in cosmetics, then emulsion stability is improved, but usability and applicability are insufficient without optimal base oil selection
Solution Approach 1:
The patent applies parameter changes by selecting specific base oils with defined physical properties (kinematic viscosity range of 1.5 to 10 mm²/s at 25°C, boiling point range of 190°C to 260°C). This optimization of physical parameters resolves the contradiction by achieving both high emulsion stability through the cross-linked silicone gel and improved usability/applicability through carefully selected base oil characteristics.
Solution Approach 2:
The patent employs composite materials by combining cross-linked polyglycerol-modified silicone gel with specific hydrocarbon base oils (isoparaffin, decane, undecane, dodecane, tridecane, tetradecane, pentadecane, hexadecane). This composite formulation achieves synergistic effects where the cross-linked gel provides emulsion stability while the optimized base oil ensures proper usability and applicability.
2Strength
If cross-linked polyglycerol-modified silicone is used as a thickener, then viscosity is improved, but optimal base oil for swelling has not been identified
Solution Approach 1:
The patent resolves the manufacturing difficulty by specifying precise parameter ranges for base oils: kinematic viscosity of 1.5 to 10 mm²/s at 25°C and boiling point of 190°C to 260°C. These parameter specifications enable manufacturers to select appropriate base oils systematically, eliminating the problem of unidentified optimal base oils while maintaining desired viscosity characteristics.
3Reliability
If cross-linked polyglycerol-modified silicone gel is used for stabilization, then emulsion stability is enhanced, but usability remains insufficient without proper base oil
Solution Approach 1:
The patent simultaneously optimizes both emulsion stability and usability by specifying base oils with kinematic viscosity of 1.5 to 10 mm²/s at 25°C. This parameter optimization ensures the gel maintains proper consistency for usability while the cross-linked structure provides emulsion stability, resolving the contradiction between these two properties.
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 formulation achieves high usability, applicability, and emulsion stability in cosmetics, including skincare, makeup, and sunscreen products.
Implementation Method 1
a cosmetic containing a silicone gel in which the following component (a) is swollen with the following component (b): (a) a cross-linked polyglycerol-modified silicone
Data Source
AI summary
A cosmetic containing a cross-linked polyglycerin-modified silicone and exhibiting excellent coatability, emulsion stability and feeling upon application, said cosmetic containing a silicone gel obtained by swelling the following (a) component with the following (b) component: (a) 5-80 mass% of a cross-linked polyglycerin-modified silicone in which a silicone chain having a C8-30 alkyl branch is cross-linked with a polyglycerin chain; and (b) 20-95 mass% of at least one oil agent selected from (b1) and (b2), where (b1) is a hydrocarbon oil having a boiling point of 190-260°C and a kinematic viscosity at 25°C of 1.5-10 mm2/s, and (b2) is an ester oil having an IOB value of 0.05-0.3 and a kinematic viscosity at 25°C of 1.5-25 mm2/s.