| abstract |
(57) [Summary] [Purpose] It has biodegradability, and its molecular weight can be freely increased by adjusting the degree of condensation (therefore, viscosity and non-volatility can be adjusted freely), and hydrolysis resistance is achieved. Has excellent remarkably good properties, and exhibits excellent lubricating performance even under high load conditions and high temperatures. Furthermore, it can be used for any properties from completely oil-soluble to dispersible and hydratable. An object is to provide an ester composition that can be obtained. [Structure] Estoride, which is a dimer or higher oxyfatty acid oligomer obtained by condensing fatty acids having OH groups (castor oil fatty acid or hydrogenated castor oil fatty acid) or condensed with fatty acids having no OH group, and hindered alcohol ( It is an ester composition comprising an ester with trimethylolpropane, pentaerythritol, dipentaerythritol, neopentyl glycol, trimethylolethane, 2-ethylhexanol, benzyl alcohol and the like. |