Abstract:
An object of the present invention is to provide a lubricant having excellent lubrication performance. Further, another object of the present invention is to produce a polyester composition having a small load on an environment and mass productivity. The present invention relates to a production method for a complex polyester composition including a step of obtaining a complex polyester composition by condensing polyhydric alcohol, polycarboxylic acid having at least two carboxyl groups and carbon atoms of greater than or equal to 5, monohydric alcohol having at least one oxyalkylene group in the absence of a solvent, in which a component having a weight average molecular weight of less than or equal to 1300 in a GPC chart of the complex polyester composition is less than or equal to 43 area %. Further, the present invention relates to a complex polyester composition, a lubricant composition, and a lubricant.
Abstract:
An object of the present invention is to provide a lubricant which has excellent lubrication performance and is able to exhibit excellent lubrication performance even when under extreme pressure conditions. The present invention relates to a complex polyester composition containing polyester obtained by condensing polyhydric alcohol having at least two hydroxyl groups, a dicarboxylic acid having 44 carbon atoms, and monohydric alcohol. Further, the present invention relates to a lubricant composition containing the complex polyester composition, and a lubricant and a production method for a complex polyester composition.