Acyl Glutamate Surfactant Composition for Low pH Clarity and Foaming
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Solution Overview
Problem
Existing personal care compositions that aim to be mild and non-irritating often compromise on foaming and cleansing performance due to the use of milder anionic surfactants like acyl glutamate, which are difficult to solubilize at low pH and do not self-structure well, making it challenging to create stable, clear, and isotropic low-pH cleansing compositions.
Innovation Solution
Formulating aqueous-based personal care compositions where acyl glutamate is the primary surfactant or primary anionic surfactant, present in amounts equal to or greater than any other single surfactant, while using specific co-surfactants and structurants to maintain clarity and stability at low pH, optimizing the ratio of shorter to longer chain glutamate, and minimizing the use of co-surfactants to enhance foaming and cost-effectiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If acyl glutamate is used as primary surfactant to provide mildness, then skin irritation is reduced, but foaming and cleansing performance deteriorate
Solution Approach 1:
The patent combines acyl glutamate with co-surfactants (amphoteric, cationic, nonionic) to create a surfactant system where the mildness of acyl glutamate is preserved while the foaming and cleansing performance is enhanced by the synergistic effects of the co-surfactants
Solution Approach 2:
The invention uses composite surfactant systems comprising acyl glutamate in combination with other surfactant types, creating a composite material that exhibits both the mildness of acyl glutamate and the superior foaming/cleansing properties of the co-surfactants
2Object-affected harmful factors
If acyl glutamate is used as primary surfactant at low pH, then mildness is maintained, but solubility deteriorates causing precipitation
Solution Approach 1:
The patent uses co-surfactants and solubilizing agents as intermediaries to prevent the precipitation of acyl glutamate at low pH, allowing the system to maintain both the low pH (for mildness and preservation) and the solubility (for clarity and stability)
3Object-affected harmful factors
If acyl glutamate is used as primary surfactant, then mildness is improved, but composition complexity increases due to need for co-surfactants and structurants
Solution Approach 1:
The patent selects co-surfactants and structurants that perform multiple functions: they enhance foaming and cleansing performance, maintain solubility at low pH, provide viscosity control, and contribute to the overall stability of the composition, thereby reducing the need for additional separate ingredients
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 compositions achieve stable, clear, and isotropic low-pH formulations with improved foaming performance and cost-effectiveness by maximizing acyl glutamate usage and employing specific surfactant ratios, ensuring the compositions remain clear and effective as primary anionic surfactants.
Implementation Method 1
Anionic surfactants, such as cationic, anionic, amphoteric, non-ionic surfactants... Anionic surfactants generally exhibit superior cleansing and foaming properties... the salt of acyl glutamate is present at 50% or greater of all the surfactant present
Data Source
AI summary
The present invention relates to compositions which comprise salt of acyl glutamate as primary surfactant or primary anionic surfactant and which compositions are clear, low pH isotropic composition.