| 摘要 |
PURPOSE:To obtain the title novel mixture having excellent refrigeration and heating efficiency, usable for refrigerator, heat pump, etc., and having excellent thermal stability, by using isobutane and dichlorotrifluoroethane as essential components. CONSTITUTION:The objective mixture contains isobutane and dichlorotrifluoroethane preferably at a molar ratio of 1:99-50:50. In the case of necessitating the improvement in the thermal stability for the use under sever condition, the working medium is added with about 1wt.% of a stabilizer such as dimethyl phosphite. |
