Phosphorus-containing compositions for refrigeration systems

摘要

The present invention is generally directed to a composition comprising: (A) at least 50% by weight of a fluorine-containing hydrocarbon having one or two carbon atoms; and (B) from about 9% to about 30% by weight of a phosphorus-containing lubricant composition comprising at least one compound characterized by the formula <IMAGE> (1) wherein R1 and R2 are each independently hydrocarbyl groups or hydrocarbyloxyalkylene groups and R1 and R2 taken together have from 2 to about 24 carbon atoms excluding any oxyalkylene carbon atoms; and Z is a hydrocarbyl group having 1 to about 18 carbon atoms. The present invention provides phosphorous-containing compositions which are compatible with fluorine-containing hydrocarbons used in refrigerators and air-conditioners, and are accordingly useful as refrigeration liquids in refrigerators and air-conditioners including auto, home, and industrial air-conditioners.