Mesitylene Sulfonate Stabilizes Hypochlorite Without Caustic pH
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Solution Overview
Problem
Sodium hypochlorite-based cleaning compositions are prone to degradation and react with desirable adjuvants, leading to stability issues and undesirable side effects such as caustic pH levels, which limit their effectiveness and safety for use on surfaces and tissues.
Innovation Solution
Incorporating a soluble salt of 2,4,6 mesitylene sulfonate, which significantly enhances the stability of hypohalite or hypohalous acid bleach components, reducing reactivity with adjuvants and maintaining stability without increasing pH, thereby broadening the selection of usable adjuvants and improving surface treatment efficacy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If sodium hydroxide or other soluble, strong base hydroxides are added to aqueous liquid compositions to increase stability, then the stability of hypochlorite is improved, but the pH greatly increases causing caustic damage to surfaces
Solution Approach 1:
The patent changes the chemical parameter by using carbonate or bicarbonate salts instead of strong base hydroxides. These alternative compounds raise pH to a lesser extent, maintaining hypochlorite stability while avoiding excessive alkalinity that causes surface damage. This parameter substitution resolves the contradiction between stability enhancement and harmful caustic effects.
2Productivity
If adjuvants are added to hypochlorite compositions to improve cleaning effectiveness, then cleaning performance is enhanced, but the adjuvants quickly react with hypochlorite reducing stability
Solution Approach 1:
The patent introduces carbonate or bicarbonate salts as intermediary substances that mediate between hypochlorite and adjuvants. These intermediaries create a chemical environment that reduces direct reactive interactions between hypochlorite and adjuvants, thereby maintaining both cleaning effectiveness and hypochlorite stability simultaneously.
3Productivity
If hypochlorite is used as a cleaning agent to achieve effective sanitizing, then sanitizing performance is improved, but degradation occurs over time leading to loss of hypochlorite
Solution Approach 1:
The patent applies preliminary action by adding carbonate or bicarbonate salts to the composition before use. These substances pre-establish a stabilizing chemical environment that prevents hypochlorite degradation over time, ensuring both sanitizing performance and long-term stability are maintained throughout the product's shelf life.
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 use of 2,4,6 mesitylene sulfonate in liquid compositions results in enhanced bleach retention and reduced reaction rates with surfactants, providing improved stability and safety by maintaining the effectiveness of hypohalite species while minimizing caustic effects, thus extending the shelf life and broadening the application range of hypochlorite-containing formulations.
Implementation Method 1
The inclusion of the soluble salt of 2,4,6 mesitylene sulfonate has surprisingly been found to increase the stability of the hypohalite or hypohalous acid bleach component far beyond the stabilizing effect provided by other previously recognized aryl sulfonate stabilizers
Data Source
AI summary
The invention relates to compositions including a hypohalite or hypochlorous acid and a soluble salt of 2,4,6 mesitylene sulfonate. The compositions may include a surfactant, a buffer, or combinations thereof. Other adjuvants may also be present. Such compositions do not require the inclusion of high concentrations of sodium hydroxide or other soluble hydroxide salts to drastically increase pH (and thus stability), although such hydroxides may be present if desired.