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Preparation of poly alpha-olefin/ester synthesized lubricating base oil

A technology for lubricating base oil and lubricating oil, applied in the field of lubricating base oil, can solve problems such as poor effect, and achieve the effects of improving poor solubility, improving viscosity index, thermal stability, and low acid value

Pending Publication Date: 2019-02-12
无锡棋成实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In synthetic aero-engine lubricating oil, ester lubricating oil is often added to PAO as pour point depressant to make up for the deficiency of PAO. The existing technology uses physical blending, and its effect is not good in high-viscosity lubricating oil.

Method used

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  • Preparation of poly alpha-olefin/ester synthesized lubricating base oil
  • Preparation of poly alpha-olefin/ester synthesized lubricating base oil
  • Preparation of poly alpha-olefin/ester synthesized lubricating base oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Carry out synthesis according to different mass ratios of raw material α-olefin and maleic anhydride:

[0041] Put the C14 α-olefin and maleic anhydride into the reaction kettle at a mass ratio of 100:16.7, add the solvent toluene (the mass is 2.4 to 2.64 times the mass of the α-olefin), stir continuously to dissolve the maleic anhydride completely, and then add Initiator dibenzoyl peroxide BPO (5.56% relative to the mass fraction of α-olefins), when the temperature was raised to 100 ° C for 4 hours, then directly added pentaerythritol (1.4% relative to the mass fraction of α-olefins) without separation ) and p-toluenesulfonic acid (0.5% relative to the mass fraction of α-olefin), raise the temperature to 120-150°C, react for 2-6h, wait for the theoretical amount of water to be generated, and distill off the solvent under reduced pressure at 60-100°C , continue to raise the temperature to remove p-toluenesulfonic acid to obtain the crude product. Wash the crude product...

Embodiment 2

[0044] Synthesize by adding different proportions of pentaerythritol:

[0045] Put the C14 α-olefin and maleic anhydride into the reaction kettle according to the mass ratio of 100:19.5, add an appropriate amount of solvent toluene (the mass is 2.4 times the mass of the α-olefin), and stir continuously until the maleic anhydride is completely dissolved. Agent BPO (mass fraction relative to α-olefin is 5.56%), when the temperature is raised to 100°C for 4 hours, pentaerythritol (mass fraction relative to α-olefin is 0.2%) is directly added without separation, p-toluenesulfonic acid is added (The mass fraction relative to α-olefin is 0.5%), raise the temperature to 120-150°C, react for 2-6h, wait for the theoretical amount of water to be generated, remove the solvent by distillation under reduced pressure at 60-100°C, and continue to raise the temperature to remove p-toluene Sulfonic acid, to obtain the crude product, wash with a mass fraction of 5% sodium bicarbonate solution, ...

Embodiment 3

[0048] Synthesis of C16 α-olefins instead of C14 α-olefins:

[0049] Specifically, similar to Example 1, the C16 α-olefin and maleic anhydride are put into the reaction kettle at a mass ratio of 100:18.0, an appropriate amount of solvent toluene is added, and the maleic anhydride is completely dissolved by constant stirring, and then the initiator is added over a period of Oxidize dibenzoyl BPO (5.56% relative to the mass fraction of α-olefins), heat up to 100°C for 4 hours, then directly add pentaerythritol (1.4% relative to the mass fraction of α-olefins) and p-toluene without separation Sulphonic acid (0.5% relative to the mass fraction of α-olefin), raise the temperature to 120-150°C, react for 2-6h, wait for the theoretical amount of water to be generated, remove the solvent by distillation under reduced pressure at 60-100°C, continue to heat up to remove the toluenesulfonic acid to give the crude product. Wash with 5% sodium bicarbonate solution, and finally wash with d...

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Abstract

The invention discloses poly alpha-olefin / ester synthesized lubricating base oil and a synthesis method thereof. An ester group is grafted onto a hydrocarbon polymer, so that the hydrocarbon polymer has the advantage of poly alpha-olefin (PAO) synthesized lubricating base oil and the advantage of ester lubricating base oil. A traditional method is characterized in that ester lubricating oil is added into PAO to serve as a pour point depressant, and belongs to physical blending, and ester lubricating oil has poor effect in high-viscosity lubricating oil. A chemical method is adopted by the invention to conduct the esterification reaction; the polar group is directly connected to the polymer, and the brand-new poly alpha-olefin / ester complete synthesized lubricating base oil is obtained.

Description

technical field [0001] The invention relates to the field of lubricating base oils, in particular to a method for fully synthesizing polyalphaolefin / ester synthetic lubricating base oils. Background technique [0002] Lubricating oil is composed of base oil and a small amount of additives to improve the performance of lubricating oil. For a long time, the lubricating base oil supplied by the market is mainly mineral oil. In recent years, with the rapid development of aviation and automobile industries and the increasing requirements for energy saving and environmental protection, the demand for high-quality commercial lubricating oil continues to increase. Mineral oil is affected by its raw materials and Due to the limitations of the production process, the product performance is difficult to meet the use requirements under certain engraved conditions. [0003] Therefore, the research and development of synthetic lubricating oil has become inevitable. Compared with mineral ...

Claims

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Application Information

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IPC IPC(8): C10M107/28C10M107/30C10M177/00C10N30/02C10N30/08
CPCC10M107/28C10M107/30C10M177/00C10M2205/0285C10M2209/1023C10M2209/0863C10N2030/02C10N2030/08
Inventor 全建国周月华
Owner 无锡棋成实业有限公司
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