Antiseptic Skin Prep Composition for Stable Tinting and Flow Control
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Solution Overview
Problem
Existing antiseptic solutions with anionic dyes are unstable, leading to precipitate formation within a few days at room temperature, and lack sufficient viscosity for effective flow control and adhesion, resulting in wastage and inefficiency during skin preparation.
Innovation Solution
A composition comprising cationic antiseptic agents, anionic dyes, non-ionic polymers with polar binding sites, and a C1-C4 lower alcohol solvent, which stabilizes the solution for up to 24 months by forming a complex, enhancing viscosity for better flow control and visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If anionic dyes are added to cationic antiseptic solutions for visibility, then the solution becomes visible on skin, but the solution becomes unstable and forms precipitate within a few days
Solution Approach 1:
Non-ionic surfactants act as intermediaries between the cationic antiseptic and anionic dye, forming micelle complexes that stabilize the combination and prevent precipitate formation while maintaining visibility on skin
Solution Approach 2:
The patent creates a composite system combining cationic antiseptic, anionic dye, and non-ionic surfactant in specific proportions to achieve both stability and visibility, transforming the unstable mixture into a stable composite formulation
2Speed
If alcohol concentration is increased for rapid evaporation and antiseptic efficacy, then drying time is reduced, but viscosity decreases causing dripping and pooling during application
Solution Approach 1:
The patent optimizes the alcohol concentration parameter to a specific range (60-80% v/v) and adjusts viscosity parameters by adding polymers and surfactants, achieving a balance between rapid evaporation and adequate flow control to prevent dripping
3Stability of the object's composition
If polymer additives are used to increase viscosity for better flow control, then dripping is reduced, but the solution may become too thick for uniform application
Solution Approach 1:
The patent carefully controls polymer concentration and molecular weight to achieve optimal viscosity parameters, ensuring the solution is thick enough to prevent dripping but thin enough to spread uniformly during application
4Stability of the object's composition
If two-part systems are used to separate colorant and antiseptic for stability, then precipitate formation is prevented, but the system complexity increases and requires mixing before use
Solution Approach 1:
The patent merges the colorant and antiseptic into a single stable formulation by introducing non-ionic surfactants as stabilizing agents, eliminating the need for separate containers and mixing steps while maintaining long-term stability
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 maintains stability and viscosity, reducing dripping and pooling, ensuring effective skin preparation with visible tinting, even after prolonged storage.
Implementation Method 1
A composition comprising at least one cationic antiseptic agent, at least one anionic colorant, at least one polymer or copolymer, at least one C1-C4 lower alcohol-based solvent and optionally a plasticizer
Implementation Method 2
The composition demonstrates excellent stability, viscosity of about 1-100 cp for better flow control to reduce dripping during application
Implementation Method 3
at least one anionic colorant... dye in an appropriate quantity to tint the skin for better visibility
Data Source
AI summary
The disclosed antiseptic composition has improved stability, flow control and tinting ability is provided. The antiseptic composition comprises a cationic antiseptic, an anionic tinting agent, a polymer that serves as a stabilizer and preferably a viscosity builder, an alcohol-based solvent and optionally a plasticizer and viscosity builder.