Antiperspirant Emulsion Composition for Elevated-Temperature Storage
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Solution Overview
Problem
Existing antiperspirant sticks in oil-in-water emulsion form suffer from particle agglomeration during prolonged storage at elevated temperatures, leading to reduced active content and increased production costs due to the need for filtration.
Innovation Solution
An antiperspirant emulsion comprising aluminum chlorohydrate, aluminum sesquichlorohydrate, lipids and waxes with a melting point above 50°C, specific nonionic emulsifiers, and a balanced oil and water content, which remains liquid at 70°C and solid at room temperature, preventing particle formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the homogenized bulk is stored at elevated temperatures for several hours before filling, then the production process allows time for filling operations, but agglomerated particles form within the bulk
Solution Approach 1:
The patent modifies the chemical composition parameters of the emulsion by incorporating specific aluminum compounds (aluminum sesquichlorohydrate and aluminum chlorohydrate) in controlled quantities, along with specific emulsifiers and oils. These parameter changes stabilize the emulsion during prolonged storage at elevated temperatures, preventing particle agglomeration while maintaining production flexibility.
2Manufacturing precision
If filtration is applied to remove agglomerated particles, then the active content is preserved, but production costs increase due to filter use and maintenance
Solution Approach 1:
The patent applies preliminary action by stabilizing the emulsion composition before storage through careful selection and proportioning of ingredients. The emulsion is formulated with specific aluminum compounds and emulsifiers that prevent agglomeration in advance, eliminating the need for subsequent filtration operations and reducing production costs while maintaining active content consistency.
3Reliability
If higher quantities of aluminum chlorohydrate are included to compensate for agglomeration, then antiperspirant efficiency is maintained, but production cost increases
Solution Approach 1:
The patent uses a composite material approach by combining aluminum sesquichlorohydrate and aluminum chlorohydrate in specific ratios, along with multiple emulsifiers and oil components. This composite formulation provides synergistic effects that stabilize the active ingredient and prevent agglomeration, maintaining antiperspirant efficiency without requiring excessive quantities of aluminum chlorohydrate, 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 maintains stability at elevated temperatures without forming agglomerates, ensuring consistent active content and reducing production costs by eliminating the need for filtration.
Implementation Method 1
Solid cosmetic antiperspirant sticks which are in a form of an oil in water emulsion are commonly known by the person skilled in art
Implementation Method 2
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 3
at least one lipid and/or wax component with a melting point of >50° C; 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 relates to a cosmetic oil in water emulsion.