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1. (WO2017151488) REFRIGERANT MIXTURES COMPRISING DIFLUOROMETHANE, PENTAFLUOROETHANE, TETRAFLUOROETHANE, TETRAFLUOROPROPENE, AND CARBON DIOXIDE AND USES THEREOF

Pub. No.:    WO/2017/151488    International Application No.:    PCT/US2017/019649
Publication Date: Sat Sep 09 01:59:59 CEST 2017 International Filing Date: Tue Feb 28 00:59:59 CET 2017
IPC: C09K 5/04
Applicants: THE CHEMOURS COMPANY FC, LLC
Inventors: MINOR, Barbara Haviland
HUGHES, Joshua
Title: REFRIGERANT MIXTURES COMPRISING DIFLUOROMETHANE, PENTAFLUOROETHANE, TETRAFLUOROETHANE, TETRAFLUOROPROPENE, AND CARBON DIOXIDE AND USES THEREOF
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.