Esters or ester compositions, process of their preparation and their use

摘要

The invention relates to new esters and ester compositions based on a polyol, a dicarboxylic acid and a monocarboxylic acid, a process for their preparation and their use in hydraulic fluids and metal working fluids. The new esters and ester compositions have improved clean burning and lubricity properties when used in/as metal working fluids, especially rolling fluids. The new esters and ester compositions have improved biodegradability and thermal and oxidative stability properties when used in/as hydraulic fluids.