Patent ID: 8038899

Claim:
A method for recharging a refrigerant system comprising: a. removing at least a portion of a chlorine-containing refrigerant from a refrigeration system comprising said chlorine-containing refrigerant and a lubricant, while retaining a majority of said lubricant in said system; and b. adding a replacement refrigerant composition to said refrigeration system either subsequent to, or simultaneously with, said removing step, wherein said replacement refrigerant composition comprises a refrigerant selected from the group consisting of hydrofluorocarbon, hydrofluoroolefin, hydrofluoroether, and blends thereof; and a solubilizing agent comprising at least one siloxane and, optionally, at least one hydrocarbon selected from the group consisting of: C 1 -C 6 branched or straight chain alkane, alkene, or alkyl, and a C 3 -C 6 cyclic hydrocarbon.