Haloolefin Composition Stability via Water and Phenol Additives

The patent introduces an intermediary substance (phenol compound or amine compound) that mediates between the haloolefin molecules, preventing their decomposition and oxidation. This mediator absorbs the harmful effects that would otherwise cause instability, allowing the haloolefin to maintain both low GWP and high stability simultaneously.

The patent creates a composite refrigerant composition by combining haloolefins with small controlled amounts of phenol compounds or amine compounds. This composite approach allows the mixture to exhibit both the low global warming potential of haloolefins and the enhanced stability provided by the additive compounds.

The patent optimizes the concentration parameter of the phenol compound or amine compound additive, specifying precise ranges (0.01-5 mass% for phenol compounds, 0.01-1 mass% for amine compounds). By carefully controlling these parameters, the patent achieves sufficient stability enhancement while minimizing handling difficulties and performance reduction.

The patent applies partial action by using minimal amounts of phenol or amine compounds—just enough to provide stability benefits without overwhelming the system. This partial addition strategy avoids the excessive handling difficulty and performance loss that would result from larger additive concentrations.

The patent carefully adjusts the concentration parameter of phenol or amine compound additives to optimize the balance between stability and performance. By specifying precise concentration ranges, the patent ensures that the additive amount is sufficient to inhibit decomposition but low enough to maintain refrigerant performance characteristics.

The patent employs partial action by adding only the minimum necessary amount of phenol or amine compounds to achieve stability. This partial addition prevents excessive performance reduction while still providing adequate protection against decomposition and oxidation.