Rotary screw compressor lubricants

摘要

Synthetic lubricants comprising 15 to 45 weight percent of an ester of a hindered polyhydric alcohol having 3 to 8 hydroxy groups and 5 to 10 carbon atoms with one or more alkanoic acids having 4 to 18 carbon atoms blended with 85 to 55 weight percent of one or more polyether polyol having an number average molecular weight from about 400 to 5000. The blends are compounded with antioxidants, corrosion inhibitors, and metal deactivators to produce a superior lubricant for rotary screw compressors that has a long life.