| 摘要 |
PURPOSE:To obtain an oil composition which can be injected into an automotive air conditioner at good efficiency without contamination with moisture, dust, air, etc., by mixing a specified lubricating oil for an automotive air conditioner with 1,1,1,2-tetrafluoroethane. CONSTITUTION:25-80wt.% lubricating oil for an automotive air conditioner using 1,1,1,2-tetrafluoroethane of a kinematic viscosity (100 deg.C) of 5-40cSt is mixed with 75-20wt.% 1,1,1,2-tetrafluoroethane to obtain a lubricating oil composition. 200-600ml of this composition is sealed into a container, this container is connected with the low-pressure side service port of an automotive air conditioner drawn to a vacuum, and the seal of the container is broken to inject the composition into the conditioner. |
