| abstract |
(A) at least one compound selected from the group consisting of carbon dioxide (CO 2 ) and hydrofluorocarbons having a boiling point in the range from -80 ° C to -40 ° C, (B) 1,1,1,2-tetrafluoroethane ( At least one hydrofluorocarbon selected from the group consisting of R-134a), 1,1,2,2-tetrafluoroethane (R-134), and 1,1-difluoroethane (R-152a), and (C) a group consisting of 1,1,1,3,3,3-hexafluoropropane (R-236fa), and 1,1,1,2,3,3-hexafluoropropane (R-236ea) A composition comprising at least one hydrofluorocarbon selected from is disclosed. This composition is useful as a refrigerant and can be used in automotive air conditioning systems and household refrigeration systems as a replacement for refrigerant R-12. |