Antiperspirant Active Emulsion for High-Temperature Agglomeration Control
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Solution Overview
Problem
Existing antiperspirant sticks in oil-in-water emulsion form suffer from the formation of agglomerated particles during prolonged storage at elevated temperatures, leading to reduced active content and increased production costs due to the need for filtering and higher ingredient quantities.
Innovation Solution
An antiperspirant emulsion comprising specific components such as antiperspirant active aluminum compounds, palmitamidopropyltrimonium chloride, lipids and waxes with a melting point above 50°C, nonionic emulsifiers with specific HLB values, and a balanced water content, which remains liquid at 70°C and solid at room temperature, preventing particle formation during storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the emulsion is stored at elevated temperatures for prolonged periods, then the production process can be simplified and productivity increased, but agglomerated particles form reducing active content and requiring filtration
Solution Approach 1:
The patent modifies the chemical composition parameters of the emulsion by incorporating specific polymers (acrylates crosspolymer, carbomer), amino acids (glycine, proline), and plant extracts (centella asiatica, gotu kola) that fundamentally change the emulsion's stability parameters. These compositional changes enable the emulsion to maintain stability at elevated temperatures without forming agglomerates, thus resolving the contradiction between production speed and emulsion stability.
2Reliability
If filters are used to remove agglomerated particles, then product quality is maintained, but production costs increase due to filter maintenance and operation
Solution Approach 1:
The patent extracts and eliminates the problematic agglomerate-forming components by redesigning the emulsion composition to include stabilizing agents that prevent particle aggregation. By removing the root cause of agglomeration through compositional modification rather than physical filtration, the patent maintains product quality while eliminating filter-related costs and complexity.
3Reliability
If higher quantities of antiperspirant active ingredient are used to compensate for agglomeration losses, then antiperspirant efficiency is maintained, but production cost increases
Solution Approach 1:
The patent converts the potential harm of aluminum compound agglomeration into a benefit by using amino acids (glycine, proline) and plant extracts that not only prevent agglomeration but also enhance the effectiveness of the active ingredient. This approach maintains antiperspirant efficiency while avoiding the need to increase the quantity of active ingredient, thus controlling production costs.
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 emulsion effectively prevents agglomeration at elevated temperatures for extended periods, maintaining active content and reducing production costs by eliminating the need for filtering, thus ensuring consistent product efficiency and cost-effectiveness.
Implementation Method 1
at least one nonionic emulsifier with an HLB value of more than 7; at least one nonionic emulsifier with an HLB value greater than 1.0 and less than or equal to 7.0
Implementation Method 2
the emulsion is liquid at 70 °C and solid at 20°C
Data Source
AI summary
The present invention belongs to the cosmetic field and re lates to a cosmetic oil in water emulsion in stick form