Aqueous Gelling Agent for Cleansing Composition
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Solution Overview
Problem
The detergent composition disclosed in Patent Document 5 lacks performance in terms of flow properties, temperature stability, foaming properties, sustained foaming properties, and texture when applied, necessitating the development of a cleansing composition with improved performance.
Innovation Solution
A skin- or hair-cleansing composition containing an aqueous gelling agent represented by a specific general formula and an anionic surfactant, with the gelling agent having a viscosity of 1,000 to 5,000 mPa·s at 25° C., a clouding point of 60 to 80° C., and a weight average molecular weight of 10,000 to 30,000, produced using compounds and higher fatty acid metal salts as catalysts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If hydrophobically modified polyether urethanes are used as gelling agents, then temperature stability is improved, but flow properties and texture are insufficient
Solution Approach 1:
The patent optimizes specific parameters of the gelling agent including viscosity (1,000 to 5,000 mPa·s at 25°C), clouding point (60 to 80°C), and weight average molecular weight (10,000 to 30,000) to achieve both temperature stability and improved flow properties. This parameter optimization resolves the contradiction by finding the optimal range that satisfies both requirements.
2Ease of manufacture
If conventional gelling agents are used, then ease of manufacture is improved, but foaming properties and sustained foaming properties are insufficient
Solution Approach 1:
The patent uses a composite gelling agent structure with specific molecular weight and viscosity characteristics that combines the ease of manufacture of conventional agents with enhanced foaming properties. The specific formulation achieves both manufacturing simplicity and reliable foaming performance.
3Reliability
If viscous cleansing compositions are used, then detergency is improved, but texture and user experience are insufficient
Solution Approach 1:
The patent optimizes the viscosity parameter to a specific range (1,000 to 5,000 mPa·s at 25°C) that provides sufficient thickness for effective detergency while maintaining pleasant texture and flow properties for user comfort. This parameter optimization resolves the contradiction between detergency and texture.
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 exhibits suitable flow properties, high temperature stability, excellent foaming properties, sustained foaming properties, and imparts a favorable texture, enhancing user experience and performance compared to conventional cleansing agents.
Implementation Method 1
hydrophobically modified polyether urethanes form elastic gels having a characteristic gelatinous texture
Implementation Method 2
Hydrophobically modified polyether urethanes are hardly affected by pH or salts
Data Source
AI summary
A skin- or hair-cleansing composition including a component (A), which is an aqueous gelling agent represented by general formula (1) described in the specification, and a component (B), which is an anionic surfactant, wherein the component (A) presents a viscosity of an aqueous solution containing 1 mass % of at 25° C. of 1,000 to 5,000 mPa·s and a clouding point of the aqueous solution containing 1 mass % of component (A) of 60° C. to 80° C., and has a weight average molecular weight of 10,000 to 30,000; a method for producing the aqueous gelling agent and a method for producing the skin- or hair-cleansing composition are provided.