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Synthesis method of polyalphaolefin lubricating oil with antioxidative properties

A technology of anti-oxidation performance and olefin lubricating oil, applied in the direction of lubricating composition, etc.

Active Publication Date: 2018-03-09
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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  • Synthesis method of polyalphaolefin lubricating oil with antioxidative properties

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 polyalphaolefin lubricating oil with anti-oxidation performance. The method combines β-3,5-di-tert-butyl-4-hydroxyphenylpropionic acid with hexanediol or trimethylolpropane Or part of the hydroxyl groups in pentaerythritol or dipentaerythritol are esterified to obtain hydroxyl compounds containing antioxidant groups; the hydroxyl compounds are fully esterified with acrylic acid to obtain reactive antioxidants with terminal double bonds; During the polymerization process of olefins such as octene, decene, and 1-dodecene, this reactive antioxidant with terminal double bonds is added, and a polyalphaolefin lubricating oil base with antioxidant properties can be obtained after the polymerization reaction Oil. The polyalphaolefin lubricating oil prepared by the invention has good anti-oxidation performance, contains a large amount of anti-oxidation groups in the structure, and can adjust the content of the anti-oxidation groups according to different use requirements. There is no need to add phenolic antioxidants during use.

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 Patents(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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