Cationic Stabilization for Glass Coating Tap Water Compatibility
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Solution Overview
Problem
Current glass container coating processes require demineralized water for stability, which is not always feasible, and result in unstable compositions when diluted with tap water, leading to equipment downtime and application issues.
Innovation Solution
A coating composition comprising a wax, a cationic surfactant, and an acid with a molar ratio greater than 1, allowing for stable dilution and application with tap water, thereby eliminating the need for water treatment systems and reducing equipment downtime.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If non-ionic surfactants are used to minimize pH and hardness effects, then the dispersion stability is improved, but the composition becomes unstable when diluted with tap water containing salts and ions
Solution Approach 1:
The patent changes the chemical parameter of the surfactant from non-ionic to cationic type, which fundamentally alters its interaction with water ions and salts. This parameter change enables the dispersion to remain stable when diluted with tap water containing various salts and ions, resolving the incompatibility issue while maintaining stability
Solution Approach 2:
The cationic surfactant acts as an intermediary that bridges the wax particles and the tap water environment. Its cationic charge interacts with the anionic salts and ions in tap water, preventing aggregation and maintaining dispersion stability despite varying water qualities
2Stability of the object's composition
If demineralized water is used for dilution, then the composition stability is improved, but water treatment systems are required which are not feasible in all locations
Solution Approach 1:
The cationic surfactant-based composition is self-regulating regarding water quality. It automatically adapts to the presence of salts and ions in tap water without requiring external water treatment systems. The system serves itself by using the cationic surfactant to manage water quality variations inherently
3Reliability
If the diluted coating composition is not stable, then equipment plugs occur and application quality is affected, but using stable composition requires specific water treatment infrastructure
Solution Approach 1:
The patent extracts the water treatment requirement from the system by formulating a composition that is inherently compatible with tap water. The cationic surfactant removes the need for demineralization infrastructure, eliminating complex water treatment equipment while ensuring reliable, plug-free operation
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 during and after dilution with tap water, preventing equipment plugs and ensuring consistent coating quality, even with varying water qualities.
Implementation Method 1
a cationic surfactant
Implementation Method 2
the molar ratio between the acid and the cationic surfactant is more than 1
Implementation Method 3
The composition maintains stability during and after dilution with tap water, preventing equipment plugs
Implementation Method 4
coatings are applied to improve and maintain their quality
Implementation Method 5
a fine dispersion of said wax is obtained
Data Source
AI summary
The present invention relates to a composition comprising a wax, a cationic surfactant, and an acid, wherein the molar ratio between the acid and the cationic surfactant is more than 1.