PREPARATION OF TETRAESTER OF PENTAERYTHRITOL HAVING A LOW ACID VALUE AND A SMALL TIME-LAPSE CHANGE OF THE ACID VALUE

摘要

The present invention comprises the steps of (1) reacting pentaerythritol and a fatty acid or ester thereof in the presence of an acid catalyst, (2) neutralizing the acid catalyst by adding hydrotalcite to the resulting reaction mixture, and (3) the result It provides a method for producing pentaerythritol tetraester, comprising the step of filtering the reaction mixture. The production method according to the present invention can provide a high quality pentaerythritol tetraester having a low acid value and little change in acid value even after a long time elapse, and is more economically and environmentally improved and applicable to industrial mass production. Do.