High-temperature-resistant polyester lubricating oil base oil and preparation method thereof

Abstract

The invention discloses high-temperature-resistant polyester lubricating oil base oil and a preparation method thereof, and belongs to the field of fine chemical engineering. The base oil is preparedfrom 1,3,5-cyclohexane trimethyl alcohol, diethyl fluoromalonate, 12-benzoyl stearic acid, 2,2-difluoropropionic acid, 3-fluoro-4-hydroxybenzoic acid, perfluoroheptanoic acid and tris(trimethylsilyl)phosphate; fluorine-contained carboxylic acid and the 1,3,5-cyclohexane trimethyl alcohol with high heat resistance are used as main raw materials, the 12-benzoyl stearic acid and the 3-fluoro-4-hydroxybenzoic acid are introduced to adjust the viscosity index of the base oil, and the tris(trimethylsilyl) phosphate is used as a high-temperature-resistant antioxidant; through fluorinated compounds in the raw materials, the high temperature resistance and the carbon deposition resistance of the product are guaranteed. The preparation method has the advantages that the raw materials are easy to obtain, and the method is simple and convenient to operate; the prepared lubricating oil base oil has good high-temperature resistance, a moderate viscosity index, good lubricating performance and wearresistance, can be applied to lubrication of most automotive engines, and is especially applicable to high temperature environments.

Description

technical field [0001] The invention relates to a lubricating oil base oil and a preparation method thereof, in particular to a high-temperature-resistant polyester lubricating oil base oil and a preparation method thereof, belonging to the field of fine chemicals. Background technique [0002] Lubricating oil is an indispensable chemical for mechanical operation and is widely used in various fields of national economy. With the further promotion of economic globalization, especially the rapid development of the automobile industry, and the strengthening of environmental protection and energy saving requirements, although the total demand for lubricating oil has not increased significantly, the demand for high-grade lubricating oil has gradually increased. [0003] Lubricating oil is mainly composed of base oil and additives. Base oil is the main component of lubricating oil, accounting for more than 85%, and plays an important role in the basic properties of lubricating oil...

AI Technical Summary

Problems solved by technology

With the rapid development of modern industry and the increasingly prominent environmental problems, the requirements for lubricant performance, operational reliability and service life, high temperature stability, low or non-toxicity, etc. are getting higher and higher. Traditional minerals are made of Base oils have been difficult to meet these stringent requirements

Due to the small molecular weight of synthetic ester compounds, the high temperature resistance is average, and it is easy to degrade and generate carbon deposits under high temperature.

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