Magnesium Zinc Buffer Composition pH Stabilization
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Solution Overview
Problem
Aqueous preparations containing water-insoluble solids, such as those used in paper, paint, and concrete industries, often experience pH changes during storage and handling, leading to destabilization and adverse effects on mechanical and optical properties. Current buffering systems using amines can render preparations alkaline, causing safety concerns and deterioration over time.
Innovation Solution
A buffer composition comprising a water-soluble source of magnesium or zinc ions combined with alkali carbonate or bicarbonate, maintained in a specific molar ratio, is used to stabilize the pH of aqueous and solid articles, preventing pH levels from rising above 12 and maintaining optical properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If amine-based buffering systems are used to stabilize pH, then pH stability is improved, but the preparation becomes overly alkaline (pH above 12) requiring special safety measures and labeling
Solution Approach 1:
The patent changes the chemical composition parameters by replacing amine-based buffers with a combination of magnesium or zinc salts and carbonate or bicarbonate salts. This parameter change achieves pH stability while maintaining pH below 12, eliminating the overly alkaline conditions that require special safety measures.
Solution Approach 2:
The patent uses common, inexpensive salt compounds (magnesium carbonate, zinc bicarbonate, etc.) instead of specialized amine-based buffering agents. These simple salt combinations provide effective pH control without the safety concerns and regulatory burden associated with strong alkaline amine systems.
2Stability of the object's composition
If amine-based buffering systems are used to stabilize pH, then pH stability is improved, but optical properties deteriorate over time due to decomposition and yellowing
Solution Approach 1:
The patent replaces complex amine-based buffers with simple inorganic salt combinations (magnesium carbonate, zinc bicarbonate). These simple compounds are chemically stable and do not undergo the decomposition reactions that cause yellowing and optical deterioration, thereby maintaining product appearance over time.
Solution Approach 2:
The patent extracts and eliminates the problematic amine components from the buffering system. By removing the amine-based substances that cause yellowing and optical degradation, the invention achieves pH stability through alternative salt-based buffering agents that preserve optical properties.
3Stability of the object's composition
If amine-based buffering systems are used to stabilize pH, then pH stability is improved, but unpleasant smell develops over time
Solution Approach 1:
The patent removes the amine-based substances from the buffering system that are responsible for unpleasant odors. By extracting these problematic components and replacing them with inorganic salt combinations, the invention achieves pH stability without generating unpleasant smells during storage.
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 buffer composition effectively stabilizes the pH of aqueous and solid articles, preventing alkalization and maintaining optical integrity without adverse effects, thus addressing the limitations of existing amine-based systems.
Implementation Method 1
a buffer composition comprising a first and a second buffer component, wherein a) the first buffer component is at least one water soluble or water dispersible source of magnesium ions and/or zinc ions, and b) the second buffer component is at least one alkali carbonate and/or at least one alkali bicarbonate
Data Source
AI summary
The present invention relates to a buffer composition comprising a first and a second buffer component, an article comprising the buffer composition being an aqueous preparation and/or a solid article, a process for buffering an aqueous preparation and a solid article as well as the use of said buffer composition for maintaining the pH of article, preferably an aqueous preparation or a solid article, equal to or below 12.