Refrigerant-containing composition, heat transfer medium, and heat cycle system
US11939515B2 · kind B2 · utility
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14Claims
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Key dates
| Filing date | Jul 8, 2019 |
| Grant date | Mar 26, 2024 |
| Priority date | — |
| Expiry date | Apr 9, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2205/40
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present disclosure provides a composition comprising a refrigerant (mixed refrigerant), the composition having three types of performance; i.e., a coefficient of performance (COP) and a refrigerating capacity (Cap) that are equivalent to or higher than those of R404A and/or R410A, and a sufficiently low GWP. The present disclosure specifically provides a composition comprising a refrigerant, the refrigerant comprising difluoromethane (HFC-32), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and at least one of 1,1-difluoroethylene (HFO-1132a) and tetrafluoroethylene (FO-1114).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.