abstract |
The present invention provides a combination of HFC and HFO with improved lubricity. Specifically, the present invention provides a kind of composition containing HFC and HFO, it is characterized in that, 1) as HFC, contains HFC-32, 2) as HFO, contains at least one in HFO-1234yf and HFO-1234ze, And 3) as the third component, at least one selected from the group consisting of HCC-40, HCFC-22, and 1,1,1-trifluoropropyne is contained. |