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Pentaerythritol ester lubricating oil base oil and preparation method thereof

A technology of lubricating base oil and pentaerythritol ester is applied in the field of lubricating base oil, which can solve the problems of low viscosity-temperature and high-temperature oxidation stability, and achieve the effect of excellent viscosity-temperature performance.

Inactive Publication Date: 2020-06-02
北京蓝星清洗有限公司
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Problems solved by technology

[0017] The present invention designs a pentaerythritol ester lubricating oil base oil and its preparation method, which solves the problems of low viscosity-temperature property and high-temperature oxidation stability of the existing 5 centistoke aviation lubricating oil base oil

Method used

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  • Pentaerythritol ester lubricating oil base oil and preparation method thereof
  • Pentaerythritol ester lubricating oil base oil and preparation method thereof

Examples

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Embodiment 4

[0049] In Example 4: the various indicators of the base oil are as follows: the kinematic viscosities at 40°C, 100°C, and -40°C are respectively 23.0mm 2 / s, 4.78mm 2 / s, 8500mm 2 / s, the viscosity index is 132, and the pour point is lower than -60°C.

[0050] In combination with the above-mentioned scheme, specifically, as this Example 5: base oil is prepared according to the method of Example 1, the difference is that the ratio of raw materials added is different; take 31.0g of pentaerythritol (purity 90%), 5.0g of dipentaerythritol (purity 90%) , of which tripentaerythritol is about 1.5g, the mass fraction is 4.1%, and the total number of hydroxyl groups is about 1.06mol. According to the ratio of carboxyl / hydroxyl molar excess ratio of about 3%, n-valeric acid, n-octanoic acid, n-nonanoic acid, and 2-methylbutyric acid , 2-methylvaleric acid 20.5g, 37.5g, 31.5g, 12.2g, 37.0g, the molar ratio of each acid is 23.6%, 18.2%, 18.2%, 11%, 29%, normal carboxyl, iso The ratios ...

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Abstract

The invention relates to pentaerythritol ester lubricating oil base oil and a preparation method thereof. The base oil is prepared from the following components: polyol and saturated fatty acid with the carbon atom number of C5-C10, wherein the polyol comprise pentaerythritol and dipentaerythritol, and the dipentaerythritol is prepared from tripentaerythritol. According to the invention, the synthesized 5-cst pentaerythritol ester base oil has excellent viscosity-temperature performance, low-temperature fluidity and high-temperature oxidation stability, has the high-temperature oxidation stability superior to that of similar base oil on the market, and has good industrial application prospect.

Description

technical field [0001] The invention belongs to the technical field of lubricating oil base oils, and in particular relates to a pentaerythritol ester lubricating oil base oil and a preparation method thereof. Background technique [0002] Currently 5 mm in aviation lubricants 2 / s ("centistokes") lubricants are widely used; 5 centistokes aviation lubricants need to meet the basic requirements of the MIL-PRF-23699F specification, and the long-term use temperature is -40~200°C, and the viscosity at -40°C is ≤13000mm 2 / s, pour point <-54°C, the corresponding requirements for 5 centistoke lubricating base oil are as follows: kinematic viscosity at 40°C ≥ 22.0 mm 2 / s, 100℃ kinematic viscosity is 4.6~5.1 mm 2 / s , kinematic viscosity at -40℃≤9500 mm 2 / s, pour point<-60℃, viscosity index>130. [0003] The base oil of existing 5 centistoke lubricating oil is polyol ester, and polyol ester is the product of the esterification reaction of polyol and fatty acid. Commo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M105/38C10M177/00C10N30/02C10N30/08C10N30/10
CPCC10M105/38C10M177/00C10M2207/2835
Inventor 王贻全庞力衡王双田刘立军单素灵张静侯悖高克卿
Owner 北京蓝星清洗有限公司
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