Silicone Compound Emulsifier for Cosmetic Stability
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Solution Overview
Problem
Existing cosmetic emulsions with silicone oil face challenges in achieving stable emulsification and temporal stability, often resulting in stickiness and requiring complex processes and high production costs, especially when using polyether-modified silicones with dendrimer-like structures.
Innovation Solution
A silicone compound with a specific average composition formula and weight-average molecular weight range, incorporating organic groups, polyoxyalkylene groups, and branched organosiloxane structures, which acts as an effective emulsifier, enhancing compatibility with various oil materials and ensuring excellent emulsion stability and a fresh use feeling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If polyether-modified silicone with dendrimer-like branched structure is used to improve emulsification ability, then compatibility with oil materials is enhanced, but production cost increases and synthesis process becomes complicated
Solution Approach 1:
The invention divides the complex dendrimer structure into simpler components by using linear or slightly branched silicone backbone with grafted polyoxyalkylene chains. This segmentation maintains the essential emulsification functionality while dramatically simplifying the synthesis process, avoiding the need for complex step-by-step dendrimer construction.
Solution Approach 2:
The invention replaces expensive, complex dendrimer structures with simpler, more cost-effective silicone-polyoxyalkylene copolymers that achieve the same emulsification purpose. The simplified structure reduces production costs while maintaining adequate performance for cosmetic applications.
2Stability of the object's composition
If polyether-modified silicone is used to improve emulsion stability, then temporal stability is enhanced, but stickiness increases after application
Solution Approach 1:
The invention optimizes the molecular weight, polyoxyalkylene chain length, and grafting density to achieve the right balance between emulsion stability and skin feel. By controlling these parameters, the formulation maintains stable emulsion while reducing the sticky sensation after application.
Solution Approach 2:
The invention creates a composite structure combining silicone backbone with polyoxyalkylene side chains, where the silicone portion provides stability and the polyoxyalkylene portion provides hydrophilicity and non-sticky feel. This composite approach resolves the contradiction between stability and stickiness.
3Stability of the object's composition
If conventional emulsifiers are used to achieve emulsion formation, then emulsion can be obtained, but temporal stability is insufficient
Solution Approach 1:
The invention changes the chemical structure parameters of the emulsifier by introducing polyoxyalkylene groups with specific molecular weights and compositions. This structural modification enhances the emulsifier's ability to maintain temporal stability, preventing phase separation over time while ensuring reliable emulsion performance.
4Adaptability or versatility
If dendrimer-like branched silicone structure is used to improve reactivity, then emulsification ability is enhanced, but bulkiness reduces reactivity
Solution Approach 1:
The invention segments the functional groups along the silicone chain rather than concentrating them in a bulky dendrimer core. This segmentation maintains accessibility of the polyoxyalkylene groups for emulsification while avoiding the steric hindrance that would reduce reactivity during synthesis.
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 silicone compound provides excellent emulsifying properties and stability to silicone oil and other oil materials, ensuring high temporal stability and a non-sticky, fresh cosmetic feel, while simplifying the synthesis process and reducing production costs.
Implementation Method 1
In emulsion type cosmetics blended with oil materials and water, surfactant is generally used. When the oil material is silicone oil, it is difficult to obtain an emulsion with good stability even though an emulsifier such as polyoxyalkylene fatty acid ester is used.
Implementation Method 2
the silicone compound shown by the average composition formula (1) has a very high affinity for various oil materials such as silicone oil, ester oil, and hydrocarbon oil; and has excellent emulsifying property
Data Source
AI summary
The present invention provides a silicone compound shown by the formula (1) and having a weight-average molecular weight in the range of 500 to 200,000, R1aR2bR3cR4dSiO(4-a-b-c-d)/2 (1), wherein R1 represents the same or different organic group, R2 represents a polyoxyalkylene group shown by —CmH2m—O—(C2H4O)g(C3H6O)hR6, R3 represents a branched type monovalent organosiloxane group shown by the following general formula (4), MoMRpDqDRrTsTRtQu (4), and R4 represents a monovalent organosiloxane group shown by the following general formula (5) or the general formula (6), MMRDv-1 (5), MwDv-1DRv-2TRv-3 (6). This provides a silicone compound which has excellent emulsification ability and emulsion stability to silicone oil, and can secure high temporal stability.