Composition containing mixture of fluorinated hydrocarbons, and method for producing same
US10005940B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 13, 2017 |
| Grant date | Jun 26, 2018 |
| Priority date | — |
| Expiry date | Jan 13, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/30
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
This invention provides, as alternative refrigerants for R404A, a refrigerant and refrigerant composition that have, for example, a nonflammability similar to that of R404A, a refrigerating capacity that can replace that of R404A, a ratio of refrigerating capacity to power consumed in a refrigeration cycle (coefficient of performance (COP)) that is equal or superior to that of R404A, and a lower GWP than that of R404A. More specifically, this invention provides a composition comprising a mixture containing fluorinated hydrocarbons, the mixture comprising difluoromethane (R32), pentafluoroethane (R125), and 1,1,1,2-tetrafluoroethane (R134a) in amounts such that the sum of the concentrations thereof is 99.5 wt % or more, the composition ratio of the fluorinated hydrocarbons contained in the mixture falling within a triangle having the following three points as vertices in a ternary composition diagram in which the sum of the concentrations of R32, R125, and R134a is 100 wt %:
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.