Haloolefin Composition Stability via Water Control
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Solution Overview
Problem
Current haloolefin-based compositions used in refrigerants and heat transfer media face stability issues due to decomposition and oxidation, which affect their performance over time, and existing methods to enhance stability, such as adding phenol compounds, can complicate handling and reduce performance.
Innovation Solution
A haloolefin-based composition comprising a haloolefin and water, with the water content being 200 mass ppm or less, and optionally including oxygen and lubricating oils like polyalkyleneglycol and polyolether, to inhibit decomposition and oxidation, thereby maintaining stability and performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a phenol compound is added to enhance stability, then the stability of haloolefin is improved, but the performance of fluoropropenes is reduced and handling difficulty increases
Solution Approach 1:
The patent removes the phenol compound stabilizer from the composition, extracting the harmful element that caused performance reduction and handling difficulties while maintaining stability through an alternative approach using controlled water content and oxygen exclusion
Solution Approach 2:
The patent changes the compositional parameters by specifying water content at 200 mass ppm or less and optionally including oxygen at 0.35 mol% or less, creating a stable haloolefin composition without phenol compounds
2Stability of the object's composition
If a phenol compound is added to enhance stability, then the stability of haloolefin is improved, but the performance of fluoropropenes is reduced
Solution Approach 1:
The patent removes the phenol compound stabilizer from the composition, extracting the harmful element that caused performance reduction while maintaining stability through an alternative approach using controlled water content and oxygen exclusion
Solution Approach 2:
The patent introduces water at controlled levels (200 mass ppm or less) as an intermediary substance that prevents decomposition and oxidation of haloolefin without the negative effects of phenol compounds, and optionally includes oxygen at 0.35 mol% or less as another intermediary for 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 provides stable performance as a heat transfer medium, refrigerant, foaming agent, solvent, propellant, or fire extinguisher by preventing oxidization and maintaining the stability of the haloolefin, ensuring long-term functionality without significant performance reduction.
Implementation Method 1
the haloolefin-based composition comprising a highly-stable haloolefin in which decomposition and oxidization are inhibited
Implementation Method 2
the haloolefin-based composition comprising a highly-stable haloolefin in which decomposition and oxidization are inhibited
Data Source
AI summary
The present invention provides a haloolefin-based composition comprising a highly-stable haloolefin in which decomposition and oxidization are inhibited, and the haloolefin-based composition being used for at least one application selected from the group consisting of heat transfer media, refrigerants, foaming agents, solvents, cleaning agents, propellants, and fire extinguishers. The present invention relates to a haloolefin-based composition comprising a haloolefin and water and being used for at least one application selected from the group consisting of heat transfer media, refrigerants, foaming agents, solvents, cleaning agents, propellants, and fire extinguishers. The haloolefin-based composition comprising a haloolefin and water is used for at least one application selected from the group consisting of heat transfer media, refrigerants, foaming agents, solvents, cleaning agents, propellants, and fire extinguishers.