Anhydrous Silver Sulfate Cosmetic Composition Stabilization
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Solution Overview
Problem
Existing cosmetic and dermatological preparations, particularly antiperspirants, face challenges with the incorporation of silver compounds due to corrosion issues in metallic storage materials and instability in aqueous solutions, leading to clumping and inhomogeneities, and there is a need for stable incorporation of antimicrobial silver compounds in low-water systems.
Innovation Solution
An anhydrous cosmetic or dermatological preparation containing silver sulfate, combined with layered silicates or talc as thickeners, and antiperspirant active ingredients, which allows for the stable incorporation of antimicrobial silver compounds even in systems with low water content, preventing corrosion and instability issues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If aqueous solutions of soluble silver salts are used, then antimicrobial effectiveness is improved, but corrosion of metallic storage materials occurs and stability deteriorates
Solution Approach 1:
The patent changes the water content parameter from conventional aqueous levels (typically >70%) to a low-water system (1-10% water content), thereby eliminating the conditions that cause corrosion while maintaining antimicrobial effectiveness through silver sulfate incorporation
Solution Approach 2:
The patent uses composite materials including layered silicates (such as hectorite) combined with silver sulfate to create a stable formulation that prevents corrosion of metallic components while maintaining antimicrobial activity in the low-water system
2Stability of the object's composition
If water content is increased to improve stability, then corrosion and clumping occur, but if water content is reduced, then stable incorporation of silver compounds becomes difficult
Solution Approach 1:
The patent optimizes the water content parameter to a specific low range (1-10%), which is sufficient to allow stable incorporation of silver sulfate through interaction with layered silicates, yet low enough to prevent corrosion and clumping that occur at higher water levels
Solution Approach 2:
The patent introduces layered silicates as intermediary materials that facilitate the stable incorporation of silver sulfate in low-water conditions, acting as a mediator between the silver compounds and the limited water available in the system
3Reliability
If aqueous silver salt solutions are used, then antimicrobial activity is achieved, but valve blocking and inhomogeneities occur
Solution Approach 1:
The patent reduces water content to 1-10%, which prevents valve blocking and inhomogeneities while maintaining antimicrobial activity through the use of silver sulfate in combination with layered silicates that ensure proper distribution and stability
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 anhydrous preparation effectively stabilizes silver sulfate, preventing corrosion and instability, ensuring consistent performance and efficacy in reducing bacterial flora and body odor without affecting sweat flow, even in low-water systems.
Implementation Method 1
silver sulfate in a total amount of 1.4 - 145 ppm... Using antimicrobial silver sulfate in cosmetic antiperspirants can reduce the bacterial flora on the skin
Implementation Method 2
one or more thickeners selected from the group of layered silicates and/or talc
Implementation Method 3
the use of silver compounds dissolved in water is problematic due to corrosion in metallic storage materials, such as aerosol cans. This effect is enhanced by the presence of compounds that promote corrosion, such as acidic aluminum and/or aluminum/zirconium salts
Data Source
AI summary
The invention relates to a water-free cosmetic or dermatological preparation comprising silver sulphate in combination with one or more thickening agents, selected from the group of sheet silicate and/or talc, one or more antiperspirant substances and perfume.