PROBLEM TO BE SOLVED: To provide an ester compound that can be synthesized easily from a variety of carboxylic acid compounds, is hard to crystallize and volatilize, and has an excellent viscosity index.SOLUTION: The present invention provides an ester compound represented by general formula (1) where R1s independently represent C1-C25 aliphatic groups, aralkyl groups or aryl groups, R11, R12 and R13 independently represent C1-C10 alkyl groups.SELECTED DRAWING: NoneCOPYRIGHT: (C)2016,JPO&INPIT【課題】様々なカルボン酸化合物から容易に合成可能で、かつ難結晶性、難揮発性で粘度指数に優れたエステル化合物を提供する。【解決手段】下記一般式(1)で示されるエステル化合物である。式中、R1はそれぞれ独立に炭素数1~25の脂肪族基、アラルキル基又はアリール基を表す。R11、R12及びR13はそれぞれ独立に炭素数1~10のアルキル基を表す。【選択図】なし
