| 摘要 |
PURPOSE:To obtain a refrigerant which scarcely affects the ozonosphere by mixing 1,1,2,2-tetrafluoroethane, 1,1-difluoroethane, and 1-chloro-1,1- difluoroethane. CONSTITUTION:At least 70mol of 1,1,2,2-tetrafluoroethane (A) is mixed with 1,1-difluoroethane (B) and 1-20mol of 1-chloro-1,1difluoroethane (C) at a molar ratio of component A to the total of components B and C of (90 to 1):(60 to 40) to give a refrigerant comprising 100mol of this mixture. |
