Rare-Earth Alkyl Phosphate Solution Viscosity Control
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Solution Overview
Problem
Rare-earth alkyl phosphate solutions exhibit high viscosity and are prone to layer separation, making them difficult to apply industrially and store effectively due to low solubility and aggregation issues.
Innovation Solution
A method involving the preparation of an alkyl phosphate amine salt solution by reacting an organic amine with an alkyl phosphate, followed by mixing with a rare-earth metal salt solution, which maintains low viscosity and prevents layer separation, using specific solvents and conditions to enhance solubility and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If rare-earth alkyl phosphate is used to improve rubber physical properties, then the physical properties of rubber are improved, but the solubility in hydrocarbon solvents decreases due to aggregation
Solution Approach 1:
The patent introduces an intermediary substance (amine base) that mediates between the rare-earth alkyl phosphate and the hydrocarbon solvent. The amine base forms a complex with the rare-earth alkyl phosphate, acting as a bridge that enables the phosphate to dissolve in hydrocarbon solvents without aggregation, thus maintaining both rubber physical property improvement and solubility stability.
2Ease of manufacture
If rare-earth alkyl phosphate solution is prepared by adding rare-earth salt to sodium alkyl phosphate, then the solution can be prepared, but the viscosity becomes very high making industrial application difficult
Solution Approach 1:
The patent changes the chemical parameters of the system by introducing an amine base that forms a complex with the rare-earth alkyl phosphate. This parameter change (formation of amine-phosphate complex) fundamentally alters the physical properties of the solution, reducing viscosity from extremely high levels to manageable levels while maintaining solution stability and enabling industrial application.
3Stability of the object's composition
If stabilizer is added to prevent layer separation, then the solution remains stable for a while, but layer separation occurs later causing polymer physical properties to deteriorate
Solution Approach 1:
The patent employs a self-service mechanism where the amine base continuously binds with the rare-earth alkyl phosphate throughout the solution's lifetime. This self-binding action provides permanent stabilization without requiring additional stabilizers that would later cause layer separation. The amine-phosphate complex remains stable indefinitely, ensuring both solution stability and polymer physical property quality.
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 method results in a stable rare-earth alkyl phosphate solution with low viscosity, improved storability, and enhanced physical properties for rubber production, suitable for industrial applications without precipitation issues.
Implementation Method 1
reacting an organic amine with an alkyl phosphate in a solvent
Implementation Method 2
reacting a rare-earth metal oxide with an acid in a solvent
Implementation Method 3
mixing and reacting the alkyl phosphate amine salt solution with the rare-earth metal salt solution
Data Source
AI summary
Disclosed is a method of preparing a rare-earth alkyl phosphate solution, the method including step (a) of preparing an alkyl phosphate amine salt solution by reacting an organic amine with an alkyl phosphate in a first solvent; step (b) of preparing a rare-earth metal salt solution by reacting a rare-earth metal oxide with an acid in the second solvent; and step (c) of mixing and reacting the alkyl phosphate amine salt solution with the rare-earth metal salt solution.