Cleansing Composition Viscosity and Foam Balance
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Solution Overview
Problem
Cleansing material compositions using acyl acidic amino acids face difficulties in achieving suitable viscosity for tube-filled use without compromising foam performance.
Innovation Solution
A cleansing material composition comprising an acyl acidic amino acid or its salt, an amphoteric surfactant, and hydroxypropyl starch phosphate, with specific mass ratios and pH control, to achieve the necessary viscosity for tube-filled use while maintaining foam performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If acyl acidic amino acid is used as the main surfactant, then foam performance is improved, but viscosity is insufficient for tube-filled use
Solution Approach 1:
The patent introduces hydroxypropyl starch phosphate as a thickening agent that acts as an intermediary substance to increase viscosity without disrupting the foam-generating capability of the acyl acidic amino acid surfactant. This mediator allows the system to achieve both high foam performance and sufficient viscosity for tube-filled application.
Solution Approach 2:
The patent creates a composite surfactant system combining acyl acidic amino acid (for foam performance) with hydroxypropyl starch phosphate (for viscosity enhancement). This composite approach allows the formulation to simultaneously achieve excellent foam properties and adequate viscosity without compromising either characteristic.
2Stability of the object's composition
If thickening agents are added to increase viscosity, then tube-filled usability is improved, but foam performance may be impaired
Solution Approach 1:
The patent optimizes the concentration of hydroxypropyl starch phosphate within specific ranges (0.1-10% by mass, preferably 0.5-5%) to achieve the desired viscosity while maintaining foam performance. By carefully controlling this parameter, the formulation balances thickening effects with foam-generating capabilities.
Solution Approach 2:
The patent selects hydroxypropyl starch phosphate with specific local properties (molecular structure, hydroxypropylation degree) that provide thickening functionality without interfering with the surfactant's foam-generating action at the molecular level. The localized structural characteristics of the thickening agent ensure compatibility with the foam performance requirements.
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 composition achieves a viscosity suitable for tube-filled use without impairing foam volume and foamability, ensuring effective skin cleansing and usability.
Implementation Method 1
hydroxypropyl starch phosphate, the cleansing material composition has a viscosity suitable for tube-filled use
Data Source
AI summary
Cleansing material compositions which contain an acyl acidic amino acid or a salt thereof, an amphoteric surfactant, and hydroxypropyl starch phosphate, and have a pH of 5.3 or less are useful for facial cleansing.