Solid Powder Cosmetic Using Copolymer and Clay for Drop Strength
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Solution Overview
Problem
Existing solid powder cosmetics face challenges in achieving excellent ease of loosening, smooth feeling in use, adhesiveness to the skin, and maintaining usability while maintaining high drop strength and filling and molding properties.
Innovation Solution
A solid powder cosmetic formulation comprising a powder, a (sodium acrylate/sodium acryloyldimethyl taurate) copolymer, and a water-swelling clay mineral, with specific content ratios and the use of amino-modified silicone-treated powders to enhance adhesiveness and filling properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If an improvement is made in the filling and molding properties of a cosmetic, then the ease of loosening of the cosmetic and the smooth feeling in use decrease
Solution Approach 1:
The patent applies composite materials by combining three specific components: (A) powder (80-99% by mass), (B) (sodium acrylate/sodium acryloyldimethyl taurate) copolymer (0.1-2% by mass), and (C) water-swelling clay mineral (0.1-2% by mass). This composite formulation resolves the contradiction by creating a material that simultaneously achieves excellent filling and molding properties while maintaining ease of loosening and smooth feeling in use, as evidenced by the balanced performance in all evaluation categories.
2Ease of operation
If an improvement is made in the ease of loosening of a cosmetic or the smooth feeling in use, then the drop strength of the molded product decreases
Solution Approach 1:
The patent resolves this contradiction through a composite material system where the (sodium acrylate/sodium acryloyldimethyl taurate) copolymer (B) and water-swelling clay mineral (C) work synergistically. The copolymer provides ease of loosening and smooth feeling, while the water-swelling clay mineral enhances drop strength. The specific content ratios (0.1-2% for both B and C) are optimized to achieve both properties simultaneously, as demonstrated by the excellent ratings in both ease of operation and strength categories.
3Strength
If a technique of increasing the strength of a cosmetic by molding an aqueous solvent containing a powder and a water-swelling clay mineral into a spherical shape is used, then the drop strength increases, but the ease of loosening of the cosmetic and the smooth feeling in use are insufficient
Solution Approach 1:
The patent improves upon the prior art by adding the (sodium acrylate/sodium acryloyldimethyl taurate) copolymer (B) to the existing powder and water-swelling clay mineral combination. This composite approach maintains the drop strength enhancement from the water-swelling clay mineral while the copolymer component specifically addresses the insufficient ease of loosening and smooth feeling, achieving a balanced formulation that excels in both properties.
4Strength
If a technique of improving the drop strength and the soft feeling in use by using a fatty acid aluminum salt is used, then the drop strength and soft feeling in use are improved, but the ease of loosening of the cosmetic and the smooth feeling in use are insufficient
Solution Approach 1:
The patent changes the chemical parameter by replacing fatty acid aluminum salt with (sodium acrylate/sodium acryloyldimethyl taurate) copolymer. This parameter change results in superior ease of loosening while maintaining drop strength. The copolymer's molecular structure and properties provide better performance in ease of loosening compared to the fatty acid aluminum salt, while the water-swelling clay mineral maintains the drop strength enhancement.
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 provides excellent ease of loosening, smooth feeling, adhesiveness, and maintains usability with improved drop strength and filling and molding properties, as demonstrated in various cosmetic products such as eyeshadows, eyebrows, foundations, blushers, and eyeliners.
Implementation Method 1
a water-swelling clay mineral
Implementation Method 2
an amino-modified silicone-treated powder
Data Source
AI summary
The present invention provides a solid powder cosmetic exhibiting excellent ease of loosening of the cosmetic, smooth feeling in use, and adhesiveness to the skin and also exhibiting no change in usability in continuous use and having excellent filling and molding properties and drop strength. The invention relates to a solid powder cosmetic containing following components (A), components (B), and components (C); (A) a powder, (B) a (sodium acrylate/sodium acryloyldimethyl taurate) copolymer, and (C) a water-swelling clay mineral.