abstract |
The present invention relates to a lubricant solution comprising a lubricant (A) containing a diamine-modified silicone oil and a trans-1,2-dichloroethylene (tDCE) and 1,1,2,2-tetrafluoro-1 The solvent (B) of -(2,2,2-trifluoroethoxy)ethane (HFE-347pc-f) contains 40 to 70 mass % of tDCE in 100 mass % of the total of tDCE and HFE-347pc-f, tDCE and HFE-347pc-f contain 30 to 60 mass % of HFE-347pc-f in a total of 100 mass %. |