Biodegradable Wash Composition With Stable Viscosity and Lather
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Solution Overview
Problem
Existing wash compositions fail to maintain stable viscosity and lather characteristics at elevated temperatures while being free of synthetic thickeners and sulfates, and often result in syneresis, which is undesirable for consumer use and environmental impact.
Innovation Solution
A wash composition comprising biodegradable thickener, anionic surfactant, and unsaturated zwitterionic surfactant, with specific hydrophobic tail compositions, that maintains stable viscosity and lather even at elevated temperatures, without synthetic thickeners like ammonium acryloyldimethyltaurate vinylpyrrolidone copolymer or alkyl acrylate cross polymers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If biodegradable thickeners are used without synthetic thickeners, then environmental friendliness is improved, but viscosity stability at elevated temperatures deteriorates
Solution Approach 1:
The patent combines biodegradable thickeners (starch, cellulose, or gum) with unsaturated zwitterionic surfactant in specific proportions to create a composite wash composition that achieves both environmental friendliness and viscosity stability at elevated temperatures without using synthetic thickeners
Solution Approach 2:
The patent specifies precise parameter ranges for the unsaturated zwitterionic surfactant (2.5-20% by weight) and biodegradable thickener (1-10% by weight) to optimize the balance between biodegradability and viscosity stability, demonstrating how parameter control resolves the contradiction
2Object-affected harmful factors
If synthetic thickeners are excluded, then environmental safety is improved, but viscosity control and stability deteriorate
Solution Approach 1:
The patent establishes specific concentration ranges for unsaturated zwitterionic surfactant (2.5-20%) and biodegradable thickener (1-10%) to achieve precise viscosity control without synthetic thickeners, replacing conventional thickening agents with a naturally-derived alternative that provides comparable rheological control
Solution Approach 2:
The unsaturated zwitterionic surfactant acts as an intermediary component that works synergistically with biodegradable thickeners to provide viscosity control and stability, bridging the gap between environmental safety requirements and manufacturing precision needs
3Object-affected harmful factors
If sulfate-free formulation is used, then environmental impact is improved, but lather stability and viscosity maintenance deteriorate
Solution Approach 1:
The patent creates a composite surfactant system combining anionic surfactant with unsaturated zwitterionic surfactant and biodegradable thickener that maintains lather stability and viscosity characteristics without relying on sulfates or synthetic thickeners, achieving environmental friendliness through material substitution
Solution Approach 2:
The patent specifies particular properties for the unsaturated zwitterionic surfactant including hydrophobic tail composition (2.5-20% by weight) and specific chain lengths to optimize local molecular interactions that stabilize lather and viscosity in the sulfate-free formulation
4Reliability
If stored at elevated temperatures, then product performance is tested, but viscosity stability and syneresis resistance deteriorate
Solution Approach 1:
The formulation is designed with unsaturated zwitterionic surfactant and biodegradable thickener in optimized proportions before storage, creating a pre-stabilized system that resists viscosity changes and syneresis when exposed to elevated temperatures during storage or use
Solution Approach 2:
The synergistic composite of unsaturated zwitterionic surfactant and biodegradable thickener provides thermal stability by maintaining molecular interactions that prevent phase separation and viscosity degradation under elevated temperature conditions
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 excellent lather and viscosity stability at elevated temperatures, free from syneresis, and is environmentally friendly by using biodegradable thickeners, ensuring a pleasant user experience and reduced environmental impact.
Implementation Method 1
d) thickener having starch, and at least one of cellulose and gum
Implementation Method 2
b) unsaturated zwitterionic surfactant
Implementation Method 3
a) at least one anionic surfactant; b) unsaturated zwitterionic surfactant
Data Source
AI summary
The invention is directed to a stable composition wash composition. The wash composition comprises a mixture of biodegradable thickeners and unsaturated zwitterionic surfactants. The wash composition has a stable viscosity and surprisingly, is free of syneresis, discoloration and malodor, even after being stored at elevated temperatures.