Synthetic method of poly-alpha-olefin lubricating oil with oxidation resistance

A technology of olefin lubricating oil and anti-oxidation performance, which is applied in the direction of lubricating composition, petroleum industry, base material, etc.

Active Publication Date: 2016-02-03
XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

No need to add phenolic antioxidants during use

Method used

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  • Synthetic method of poly-alpha-olefin lubricating oil with oxidation resistance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Weigh 11.8g of hexanediol and 27.8g of β-3,5-di-tert-butyl-4-hydroxyphenylpropionic acid into a 250mL three-neck flask reaction device equipped with electric stirring, thermometer, water separator and condenser, and add the catalyst The mass fraction is 0.3% stannous chloride, and then 70 mL of xylene is added as a solvent, the reaction temperature is 110 ° C, the reaction time is 5 h, and cooled to room temperature to obtain a mixture of compounds containing antioxidant groups and toluene;

[0017] Add 7.2g of acrylic acid to the mixture of the compound containing antioxidant groups and toluene, control the temperature at 140°C, react for 6.5h, cool to room temperature, wash with distilled water until neutral, then distill off the water and xylene under reduced pressure , to obtain a reactive antioxidant with a terminal double bond;

[0018] Add the obtained reactive antioxidant with terminal double bond to the polymerization reaction system of octene, in AlCl 3 The p...

Embodiment 2

[0020] Weigh 11.8g of hexanediol and 27.8g of β-3,5-di-tert-butyl-4-hydroxyphenylpropionic acid into a 250mL three-neck flask reaction device equipped with electric stirring, thermometer, water separator and condenser, and add the catalyst The mass fraction is 0.5% stannous chloride, and then 70 mL of xylene is added as a solvent, the temperature is controlled at 140 ° C, the reaction is carried out for 4 hours, and the mixture is cooled to room temperature to obtain a mixture of compounds containing antioxidant groups and toluene;

[0021] Add 7.2 g of acrylic acid to the mixture of compounds containing antioxidant groups and toluene, control the temperature at 130 ° C, react for 7 h, cool to room temperature, wash with distilled water until neutral, and then distill off water and xylene under reduced pressure to obtain Reactive antioxidants with terminal double bonds;

[0022] The obtained reactive antioxidant with terminal double bond is added to the polymerization reaction...

Embodiment 3

[0024] Weigh 11.8g of hexanediol and 27.8g of β-3,5-di-tert-butyl-4-hydroxyphenylpropionic acid into a 250mL three-neck flask reaction device equipped with electric stirring, thermometer, water separator and condenser, and add the catalyst The mass fraction is 0.5% p-toluenesulfonic acid, and then 70 mL of xylene is added as a solvent, the reaction temperature is 150 ° C, the reaction time is 6 h, and cooled to room temperature to obtain a mixture of compounds containing antioxidant groups and toluene;

[0025] Add 7.2 g of acrylic acid to the mixture of compounds containing antioxidant groups and toluene, control the temperature at 130 ° C, react for 7 h, cool to room temperature, wash with distilled water until neutral, and then distill off water and xylene under reduced pressure to obtain Reactive antioxidants with terminal double bonds;

[0026] The obtained reactive antioxidant with terminal double bond is added to the polymerization reaction system of 1-dodecene, in BF ...

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Abstract

The invention relates to a preparation method of poly-alpha-olefin lubricating oil with oxidation resistance. The method comprises the following steps: partially esterifying beta-3,5-di-tert-4-hydroxy phenyl propionic acid and hexanediol, trimethylolpropane, pentaerythritol or dipentaerythritol to obtain a hydroxyl compound containing an antioxidant radical; sufficiently esterifying the hydroxyl compound and acrylic acid to obtain a reaction-type antioxidant with end-group double-bond; during the polymerization process of the alpha olefin that is octylene, decene and laurylene direct olefin, adding the reaction-type antioxidant with the end-group double-bond, and after the polymerization, obtaining the poly-alpha-olefin lubricating oil basic oil with oxidation resistance. The prepared poly-alpha-olefin lubricating oil has good oxidation resistance; the structure of the poly-alpha-olefin contains a great amount of antioxidant radicals, and the content of the antioxidant radicals can be adjusted according to different application requirements. During the application process, no phenol antioxidant is needed.

Description

technical field [0001] The invention relates to a method for synthesizing polyalphaolefin lubricating oil with oxidation resistance. Background technique [0002] Polyalphaolefin (PAO) is the main component of synthetic aviation lubricating oil and the key factor affecting the overall performance of the oil. It is widely used in the field of aero-engine lubricating oil at home and abroad. PAO not only has the same hydrocarbon structure as petroleum-based base oil, but also has unique long side chains that are not available in petroleum-based hydrocarbons. Therefore, PAO has more comprehensive performance than petroleum-based base oils, and is a kind of aero-engine lubricating oil base oil with excellent performance. [0003] High-temperature thermal-oxidative stability is one of the important performance properties of aero-engine lubricating oil, and it is also an important parameter that determines its service temperature. The high-temperature and high-speed operating cha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F210/14C08F222/14C08F222/20C10M107/02C10M177/00
Inventor 张亚刚张乐涛吾满江·艾力蔡国星
Owner XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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