Organopolysiloxane Polymer for Stable Silicone Pasty Compositions
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Solution Overview
Problem
Low viscosity silicone oils used in cosmetics face challenges in forming stable, uniform pasty compositions due to separation issues and skin irritation concerns, with existing thickeners compromising the fresh feel and extensibility of silicone oils, and surfactants causing pH changes and unpleasant odors.
Innovation Solution
A hydrophilic organopolysiloxane polymer containing a glycerol derivative is used, which is synthesized through addition polymerization with specific glycerol derivatives and hydrocarbons, and then kneaded with liquid oil, followed by heat treatment and neutralization to enhance emulsifying properties and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If low viscosity silicone oil is used as base oil, then fresh feel and extensibility are improved, but separation occurs and stability deteriorates
Solution Approach 1:
The patent uses a composite thickening system combining silicone oil with specific organic substances (dextrin fatty acid ester, sucrose fatty acid ester, or cellulose ether containing fatty acid ester groups) to create a stable pasty composition that prevents separation while maintaining the fresh feel and extensibility of the low viscosity silicone oil
2Stability of the object's composition
If organic or inorganic substances are used as thickeners, then stability is improved, but fresh feel and extensibility decline
Solution Approach 1:
The patent modifies the chemical structure of thickeners by introducing fatty acid ester groups to organic substances like dextrin, sucrose, and cellulose ether, changing their parameters to be compatible with silicone oil while maintaining effective thickening without compromising fresh feel and extensibility
3Stability of the object's composition
If surfactant is used to distribute silicone oil and water, then homogeneity is improved, but skin irritation occurs
Solution Approach 1:
The patent uses the organopolysiloxane polymer with glycerol derivative as an intermediary substance that bridges silicone oil and water, enabling homogeneous distribution without requiring surfactants that cause skin irritation
4Adaptability or versatility
If polyoxyalkylene group is introduced into silicone thickener, then emulsifying properties are improved, but pH falls and unpleasant odor occurs
Solution Approach 1:
The patent removes the polyoxyalkylene group from the silicone thickener molecule and replaces it with a glycerol derivative, extracting the problematic component that causes pH fall and unpleasant odor while retaining the beneficial emulsifying 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 resulting cosmetic material has improved long-term stability, maintains a clean feel, and reduces propionaldehyde generation to 100 ppm or less, ensuring pleasant odor and moisture retention on the skin.
Implementation Method 1
an organopolysiloxane polymer which can swell up by containing at least its own weight of a liquid oil
Implementation Method 2
synthesized through addition polymerization with specific glycerol derivatives and hydrocarbons
Implementation Method 3
heat treatment and neutralization to enhance emulsifying properties and stability
Data Source
AI summary
An organopolysiloxane polymer having a glycerol derivative which can swell up by containing at least its own weight of a liquid oil, a pasty composition comprising a liquid oil blended with this polymer, and a cosmetic material containing these polymers or pasty compositions.