POLYOL ESTER COMPOSITIONS WITH UNCONVERTED HYDROXYL GROUPS FOR USE AS LUBRICANT BASE STOCKS

摘要

A synthetic ester composition which exhibits thermal and oxidative stability , lower friction coefficient and lower wear, wherein the ester composition comprises the reaction product of: a linear or branched alcohol having the general formula R(OH)n, wherein R is an aliphatic or cyclo-aliphatic group having from about 2 to 20 carbon atoms an d n is at least 2; and at least one linear and/or branched acid which has a carbon number in the range between about C4 to C20; wherein the synthetic ester composition has a hydroxyl number of between about greater than 5 to 180, preferably between about greater than 5 to 100, and more preferably between about 10 to 80.