Polyneopentylpolyol ester lubricant and refrigeration compressor fluid comprising same

摘要

A high viscosity synthetic ester lubricant base stock formed from a neopentylpolyol condensed with at least one monocarboxylic acid selected from the group consisting of liner acids having between 4 to 10 carbon atoms and branched chain acids having from 5 to 10 carbon atoms in an excess of hydroxyl to carboxylic acid groups to form a partial polyneopentylpolyol ester. The acid catalyst is neutralised and the partial ester is further reacted with the same or similar acid to form a high viscosity polyneopentylpolyol ester. Also disclosed are a method of preparing such a lubricant and a refrigeration compressor fluid comprising a fluorinated refrigerant and a neopentylpolyol ester lubricant.