| abstract |
A PAG lubricant basefluid for use with a fluoroalkene refrigerant, the basefluid containing a PAG having the formula: RX(R a O) x (R b O) y R c , where R is selected from alkyl groups having from 1-10 carbon atoms, acyl groups having from 1-10 carbon atoms, aliphatic hydrocarbon groups having from 2-6 valencies, and substituents containing a heterocyclic ring in which the heteroatom(s) are oxygen; X is O or S; R a is a C2 alkylene group; R b is a C3 alkylene group; R c is the same as R or is an H; x and y are each independently 0 or an integer ≦100; and the sum of x+y is an integer in the range of from about 5-100. Refrigeration and lubricant compositions containing the PAG lubricant basefluid and a method of operating a motor-integrated compressor of a refrigeration or air conditioning system with substantially no electrical leakage current are also provided. |