Invention Grant
- Patent Title: Refrigerant mixtures comprising difluoromethane, pentafluoroethane, tetrafluoroethane, tetrafluoropropene, and carbon dioxide and uses thereof
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Application No.: US17068987Application Date: 2020-10-13
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Publication No.: US11312891B2Publication Date: 2022-04-26
- Inventor: Barbara Haviland Minor , Joshua Hughes
- Applicant: THE CHEMOURS COMPANY FC, LLC
- Applicant Address: US DE Wilmington
- Assignee: THE CHEMOURS COMPANY FC, LLC
- Current Assignee: THE CHEMOURS COMPANY FC, LLC
- Current Assignee Address: US DE Wilmington
- Main IPC: C09K5/04
- IPC: C09K5/04
Abstract:
In accordance with the present invention refrigerant compositions are disclosed. The compositions comprise HFC-32, HFC-125, HFO-1234yf, HFC-134a, and CO2. The refrigerant compositions are useful in processes to produce cooling and heating, in methods for replacing refrigerant R-410A or R-22, and in refrigeration, air conditioning or heat pump systems. These inventive compositions are non-flammable and match cooling performance for R-22 and R-410A within ±15%. Additionally, these compositions may serve as replacements for R-404A, R-507, R407A, R407C and/or R-407F in refrigeration, air conditioning or heat pump systems. The compositions as described herein have unexpected flammability properties.
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