Haloolefin-based composition

Abstract

The present invention provides a highly stable haloolefin-based composition that inhibits decomposition or oxidization.The haloolefin-based composition comprising (a) a haloolefin; (b) at least one compound selected from the group consisting of HFC-1234ze, HFC-254eb, HFC-1243zf, HFC-245eb, HFC-245fa, HC-245cb, HFC-236ea, HFC236fa, HFC1225ye, 3,3,3-trifluoropropine, HFC-23, HFC-32, HFC-125, HFC-143a, HFC-134a, FC-1216, HCFO-1233xf, HCFO-1233zd, HCFO-1232xf, HCFO-1223xd, and chloromethane; and (c) water.

Description

TECHNICAL FIELD[0001]The present invention relates to a haloolefin-based composition.BACKGROUND ART[0002]Hydrofluorocarbons (HFCs), such as HFC-12.5 and HPC-32, have been widely used as important substitutes for CFCs, HCFCs, etc., which are known as substances that deplete the ozone layer. Known examples of such substitutes include “HFC-410A,” which is a mixture of HFC-32 and HFC-125, “HFC-404A,” which is a mixture of HFC-125, HFC-134a, and HFC-143a, etc.[0003]Such substitutes have various applications, such as heat transfer media, refrigerants, foaming agents, solvents, cleaning agents, propellants, and fire extinguishers, and are consumed in large amounts. However, since these substances have a global warning potential (GWP) several thousand times higher than that of CO2, many people are concerned that their diffusion may affect global warming. As a global warming countermeasure, the substances are collected after being used; however, not all of them can be collected, and their di...

AI Technical Summary

Benefits of technology

[0028]According the haloolefin-based composition of the present invention, the stability of haloolefin in the composition is improved because the composition contains water. Specifically, since the double bond in the molecule of the haloolefin can be stably present, and the haloolefin does not easily cause oxidization, the performance of the haloolefin is not likely to be lost for a long period of time.

Problems solved by technology

Such substitutes have various applications, such as heat transfer media, refrigerants, foaming agents, solvents, cleaning agents, propellants, and fire extinguishers, and are consumed in large amounts.

However, since these substances have a global warning potential (GWP) several thousand times higher than that of CO2, many people are concerned that their diffusion may affect global warming.

As a global warming countermeasure, the substances are collected after being used; however, not all of them can be collected, and their diffusion due to leakage, etc., cannot be disregarded.

For use in refrigerants, heat transfer media, etc., although substitution with CO2 or hydrocarbon-based substances has been studied, CO2 refrigerants have many difficulties in reducing comprehensive greenhouse gas emissions, including energy consumption, because of the requirement of large equipment due to the low efficiency of the CO2 refrigerants.

Hydrocarbon-based substances also pose safety problems due to their high flammability.

Of these, fluoropropenes are particularly promising substances as candidates for refrigerants or heat transfer media with a low GWP; however, they may sometimes gradually decompose over time, etc., and thus are not highly stable.

Accordingly, these substances have a problem of gradually reducing performance depending on the situation or environment when used in various applications.