Organosilicon Copolymer Solid Particles for Soluble Cosmetic Formulation
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Solution Overview
Problem
Existing silicone acrylate technologies are limited by their availability only in solution or dispersion forms, which restrict formulation freedom and require high heat and shear for re-dispersion, leading to poor solubility and handling issues, and crosslinked polymers exhibit poor solubility in cosmetic oils.
Innovation Solution
A solvent-soluble solid particle of organosilicon-functional co-polymer is produced through polymerization from a specific monomer composition with a mass ratio of 35:65 to 70:30, resulting in a non-crosslinked polymer with a glass transition temperature of 35-120°C and particle size under 5,000 μm, enabling easy solubility in cosmetic solvents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If commercial silicone acrylate is used in solution or dispersion form, then formulation freedom is restricted and carriers are reduced, but the product can be easily handled and applied
Solution Approach 1:
The patent changes the physical state parameter of silicone acrylate from liquid (solution/dispersion) to solid (particle form). This parameter change enables formulation freedom by allowing the solid particles to be mixed with various cosmetic carriers without being constrained by solvent compatibility, while the solid particle form itself provides easy handling and storage
Solution Approach 2:
The patent extracts the silicone acrylate polymer from its conventional liquid vehicle (solvent or dispersion medium) and presents it as a solid particle. This extraction eliminates the need to carry over unwanted solvents like isododecane into final formulations, providing both formulation freedom and clean application
2Adaptability or versatility
If solution type silicone acrylate is used, then formulation flexibility is improved, but high heat and shear are required for re-dispersion and solubility is poor
Solution Approach 1:
Instead of taking liquid silicone acrylate and attempting to re-disperse it (which requires high energy), the patent inverts the approach by providing the silicone acrylate already in solid particle form. This inversion eliminates the re-dispersion step entirely, as the solid particles can be directly incorporated into formulations without requiring high heat and shear energy
Solution Approach 2:
The patent performs the particle formation action in advance during manufacturing, creating pre-formed solid particles that are ready for direct use. This preliminary action of particle formation eliminates the need for subsequent high-energy re-dispersion processes during formulation
3Stability of the object's composition
If crosslinked silicone acrylate polymer is used, then aggregation is reduced, but solubility in cosmetic oils is poor
Solution Approach 1:
The patent applies local quality by creating non-uniform particle structures with controlled internal morphology. The solid particles have specific internal structures that allow them to maintain aggregation resistance while preserving solubility characteristics, achieving both stability and compatibility in cosmetic formulations
4Shape
If solid silicone acrylate particles are produced by hand crush, then solid form is achieved, but the process cannot be applied to mass production and requires hard work
Solution Approach 1:
The patent replaces the manual mechanical crushing process with a controlled particle formation process that occurs during polymerization. Instead of mechanically breaking down solid material (hand crush), the invention allows particles to form naturally in a controlled manner during the polymerization reaction, enabling scalable mass production without manual intervention
Solution Approach 2:
The patent performs particle formation in advance during the polymerization step itself, rather than requiring subsequent mechanical processing. This preliminary particle formation action during synthesis enables direct production of solid particles suitable for mass production without requiring post-processing crushing operations
5Shape
If pulverized silicone acrylate solids are produced, then solid form is achieved, but high shear mixing, long time and heating are required to be completely solved
Solution Approach 1:
The patent changes the particle size parameter and internal structure of the solid particles to optimize dissolution characteristics. By controlling particle morphology and size during formation, the solid particles achieve rapid dissolution in cosmetic formulations without requiring prolonged high-shear mixing and heating, significantly reducing the loss of time
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 solid particle provides superior solubility and handling properties, allowing flexible formulation options and improved water and sebum resistance in cosmetic compositions.
Implementation Method 1
improve water resistance and sebum resistance of cosmetic materials
Implementation Method 2
improve water resistance and sebum resistance of cosmetic materials
Data Source
AI summary
Provided is a solid particle consisting essentially of organosilicon-functional co-polymer polymerized from a monomer composition. The monomer composition consists essentially of (A) one or more unsaturated polymerizable monomer(s) having at least one organosilicon functionality and one polymerizable group in the molecule and (B) one or more unsaturated polymerizable monomer(s) containing no or one silicon atom and having one polymerizable group in the molecule. The mass ratio of monomer (A) to monomer (B) ranges from 35:65 to 70:30 in the monomer composition. The long size in three directions for the solid primary particle ranges from 0.1 to 5,000 μm. A manufacturing process of the solid particle, use of the solid particle as a cosmetic ingredient, as well as a cosmetic composition comprising the solid particle and the production method thereof are also provided.