Patent ID: 7560045
Filing Date: 2009-07-14
Classification: C09K,C10M,C10N,F25B

Abstract:
1. A refrigerant composition comprising: a. a refrigerant consisting essentially of 1,1-difluoroethane; b. lubricant consisting of one or more propylene oxide homopolymers selected from the group consisting of polyalkylene glycols (PAG) having the formula c. a flame retardant selected from the group consisting of trifluorochloromethane, trifluoroiodomethane, phosphorous compounds, phosphate esters, hydrocarbons that contain iodine or bromine, hydrofluorocarbons that contain iodine or bromine, fluorocarbons that contain iodine or bromine, or any combination thereof; wherein the viscosity of the lubricant is between about 40 and 150 cSt at 40° C. and the lubricant is miscible in the refrigerant between about −40° C. and about 40° C.