Synthesis and characterisation of antioxidant‐modified esters of dipentaerythritol as lubricating base oil

摘要: In this paper, five antioxidant-modified esters were synthesised through two steps of simple esterification. Antioxidant-modified multi-hydroxyl compound was at the first step, and second step. This kind is useful in many fields, such as lubricating oil cutting compound, because important functions (antioxidant lubricant) same compound. The active antioxidant group attached to these 3-(3,5-di-tert-butyl-4-hydroxy-phenyl)-propionic acid. characterised with Fourier transforminfrared spectroscopy (FTIR) thermogravimetric (TG) analysis. analytical results FTIR demonstrates changes alcoholic hydroxyl carboxyl suggests that synthesis feasible. TG analysis rotating pressure vessel method show has excellent oxidative stability. physical properties base oil, viscosity, viscosity index, pour point flash point, suggested can be used oil. Copyright (C) 2012 John Wiley a Sons, Ltd.