| abstract |
Lubricant base compositions for compression refrigeration are composed of 95 to 5 percent by weight of polyether polyols having a number average molecular weight of from 400 to 5000 and from 5 to 95 percent of esters made from polyhydric alcohols with alkanoic acids or esters made from alkanedioic acids with alkanols. A refrigeration fluid is made from the base composition with the addition of selected hydrochlorofluorocarbons and hydrofluorocarbons so that the base composition is miscible with the refrigerant in the range of from -20°C to greater than 65°C. |