POLYOL ESTER HEAVY DUTY COMPRESSOR LUBRICANTS

摘要

A high quality heavy duty lubricant for refrigerating compressors, especially those using chlorine free hydrofluorocarbon refrigerant working fluids, is provided by mixed esters of hindered polyols, most desirably pentaerythritol with a mixture of carboxylic acids including at least some iso-pentanoic acid along with at least 13 % of dibasic acids such as adipic.