Quaternary Ammonium Polymer Polyphosphate Complex Antiperspirant
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Solution Overview
Problem
Conventional antiperspirants using aluminum and zirconium halide compounds can stain clothes due to their acidic nature, necessitating alternative active agents for effective sweat reduction.
Innovation Solution
A personal care composition comprising a soluble quaternary ammonium polymer/polyphosphate complex, specifically formed by combining polyphosphate compounds with 2 or more phosphate units and quaternary ammonium polymers like polyacrylamidopropyltrimonium chloride, which can be incorporated into antiperspirant formulations to occlude pores and reduce sweat.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If aluminum and zirconium halide compounds are used as antiperspirant actives, then sweat reduction efficacy is improved, but clothes staining occurs due to acidic nature
Solution Approach 1:
The patent changes the chemical parameters of the antiperspirant active ingredient from acidic aluminum/zirconium halide compounds to a neutral or basic quaternary ammonium polymer/polyphosphate complex. This parameter change maintains the sweat reduction function while eliminating the staining problem caused by acidity.
Solution Approach 2:
The invention uses a composite material system consisting of quaternary ammonium polymer and polyphosphate compounds forming a complex. This composite approach provides both the desired antiperspirant efficacy and the beneficial property of not staining clothes, resolving the contradiction between effectiveness and harmlessness.
2Object-generated harmful factors
If quaternary ammonium polymer/polyphosphate complex is used, then clothes staining is prevented, but pore occlusion mechanism needs verification
Solution Approach 1:
The quaternary ammonium polymer and polyphosphate compounds automatically form a complex upon contact that precipitates to occlude pores. This self-service mechanism eliminates the need for additional pore-blocking agents while maintaining antiperspirant efficacy.
Solution Approach 2:
The invention utilizes phase transition from soluble complex formation to precipitate formation for pore occlusion. The quaternary ammonium polymer/polyphosphate complex transitions from a soluble state in the formulation to an insoluble precipitate on the skin, providing effective pore blocking without staining.
3Reliability
If traditional aluminum/zirconium compounds are used, then antiperspirant function is achieved, but alternative agents are needed to eliminate staining
Solution Approach 1:
The quaternary ammonium polymer/polyphosphate complex serves multiple functions: it provides antiperspirant efficacy through pore occlusion, prevents clothes staining by being neutral/basic instead of acidic, and forms a stable soluble complex that can be incorporated into various personal care product formulations.
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 complex effectively reduces sweat by forming a precipitate that occludes pores without staining, offering an alternative to traditional antiperspirant actives while maintaining efficacy in various personal care products.
Implementation Method 1
The complex can be formed by combining in a composition at least one polyphosphate compound having 2 or more phosphate units and at least one quaternary ammonium polymer
Data Source
AI summary
Described herein, are compositions comprising a soluble quaternary ammonium polymer/polyphosphate complex made by combining ingredients comprising a quaternary ammonium polymer and polyphosphates having 2 or more phosphate units. Methods of making and using these compositions are also described.