Polyelectrolyte Complex Microgels for Antiperspirant Pore Blocking
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Solution Overview
Problem
Current antiperspirant compositions do not effectively reduce sweat through a mechanism that combines the pore-blocking action of polyelectrolyte complexes with the sweat-reducing efficacy of aluminum-based antiperspirant salts, leading to suboptimal sweat reduction performance.
Innovation Solution
An antiperspirant composition is developed that incorporates a polyelectrolyte complex formed between a cationic polyquaternium polymer and an anionic polymer, specifically Gantrez® S-97 and Conditioneze® NT-20, with a defined charge ratio, which forms microgels that can enter sweat gland pores and, when combined with active antiperspirant ingredients like activated aluminum chlorohydrate, enhance sweat reduction by forming polymeric plugs and a barrier film.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional aluminum-based antiperspirant salts are used alone, then they provide basic sweat-reducing efficacy, but they fail to achieve optimal sweat reduction performance due to lack of combined pore-blocking mechanism
Solution Approach 1:
The patent combines polyelectrolyte complexes with aluminum-based antiperspirant salts to create a dual-mechanism formulation. The polyelectrolyte complexes provide pore-blocking action while the aluminum salts provide sweat-reducing efficacy, achieving synergistic sweat reduction performance that neither component could achieve alone.
Solution Approach 2:
The invention uses composite materials by formulating a mixture of polyelectrolyte complexes (formed from cationic and anionic polymers) and aluminum-based antiperspirant salts. This composite approach allows the formulation to leverage both the pore-blocking properties of the polyelectrolyte network and the sweat-reducing properties of the aluminum salts.
2Object-affected harmful factors
If polyelectrolyte complexes are used to block sweat gland pores, then pore-blocking action is achieved, but sweat reduction efficacy is insufficient without aluminum-based antiperspirant salts
Solution Approach 1:
The patent merges the pore-blocking function of polyelectrolyte complexes with the sweat-reducing function of aluminum-based antiperspirant salts. The formulation integrates both components to achieve comprehensive sweat reduction that addresses both pore occlusion and sweat secretion inhibition.
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 significant sweat reduction by forming microgels that block sweat glands and create a barrier film, as demonstrated by particle size distribution measurements and in-vitro and in-vivo testing, showing improved efficacy compared to traditional antiperspirant formulations.
Implementation Method 1
a polyelectrolyte complex between a cationic polyquaternium polymer and an anionic polymer
Implementation Method 2
Polyelectrolyte complexes (PEC) between anionic and cationic polymers form microgels
Implementation Method 3
forms polymeric plugs to impact sweat reduction
Implementation Method 4
create a barrier film
Data Source
AI summary
Polyelectrolyte complexes between cationic polymers and anionic polymers are used in antiperspirant compositions containing an active antiperspirant ingredient.