A kind of saturated polyolefin lubricating oil base oil and preparation method thereof

A technology of lubricating base oil and polyolefin, applied in the field of lubricants, can solve the problems of high pour point, complex process, poor product stability, etc., and achieve the effects of low pour point, simplified process flow, and excellent viscosity-temperature performance.

Active Publication Date: 2021-11-02
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to adopt a new type of catalyst system in order to overcome the problems of high pour point, poor product stability, need for hydrogenation saturation and complicated process in the existing ethylene oligomerization to directly prepare polyolefin lubricating oil base oil , while adding a component as a chain transfer agent, a preparation process for a saturated polyolefin lubricating oil base oil is provided, the catalytic activity is high, the obtained product does not need hydrogenation saturation, the process is simplified, and the obtained product has low temperature fluidity Good, good anti-oxidation stability, low pour point, excellent viscosity-temperature performance, and has a very good application prospect in the field of high-performance synthetic lubricants

Method used

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  • A kind of saturated polyolefin lubricating oil base oil and preparation method thereof
  • A kind of saturated polyolefin lubricating oil base oil and preparation method thereof
  • A kind of saturated polyolefin lubricating oil base oil and preparation method thereof

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Effect test

Embodiment 1

[0055] The preparation of the saturated polyolefin lubricating oil base oil of embodiment 1

[0056] 1. Preparation test of saturated polyolefin lubricating oil base oil

[0057] Under the condition of anhydrous and oxygen-free, add 100mL of dry n-hexane, 5mmol of diethylaluminum chloride, 2mmol of diethylzinc, and 10μmol of catalyst C1 into the reaction kettle, feed 10atm of ethylene at 50°C for ethylene low Polymerization reaction for 5 hours, pour the solution containing polyethylene oil into 5% hydrochloric acid acidified ethanol for washing, separate the liquid, and then spin evaporate to remove the solvent to obtain a saturated polyolefin lubricating oil base oil; wherein, the catalyst C1 is R is benzene α-aminoimine nickel complexes at the base time.

[0058] 2. Results

[0059] The catalytic activity of the catalytic system in this embodiment is 9.2×10 7 g / mol·h, the bromine value of the prepared lubricating base oil is 0.01g / 100g, the number average molecular weigh...

Embodiment 2

[0060] The preparation of the saturated polyolefin lubricating oil base oil of embodiment 2

[0061] 1. Preparation test of saturated polyolefin lubricating oil base oil

[0062] Under anhydrous and oxygen-free conditions, add 100mL of dry toluene, 5mmol of diethylaluminum chloride, 2mmol of trimethylaluminum, and 10μmol of catalyst C1 into the reactor, and then feed 25atm of ethylene to carry out ethylene oligomerization at 50°C After reacting for 12 hours, pour the solution containing polyethylene oil into 5% hydrochloric acid acidified ethanol for washing, separate the liquids, and remove the solvent by rotary evaporation to obtain a saturated polyolefin lubricating oil base oil; wherein, the catalyst C1 is R is phenyl When the α-amino imine nickel complex.

[0063] 2. Results

[0064] The catalytic activity of the catalytic system in this embodiment is 3.2×10 7 g / mol·h, the bromine value of the prepared lubricating base oil is 0.05g / 100g, the number average molecular we...

Embodiment 3

[0065] The preparation of the saturated polyolefin lubricating oil base oil of embodiment 3

[0066] 1. Preparation test of saturated polyolefin lubricating oil base oil

[0067] Under anhydrous and oxygen-free conditions, add 100mL of dry n-hexane, 5mmol of diethylaluminum chloride, 2mmol of trimethylaluminum, and 10μmol of catalyst C2 into the reaction kettle, and then inject 25atm of ethylene at 50°C for ethylene low After 12 hours of polymerization reaction, the solution containing polyethylene oil was poured into 5% hydrochloric acid acidified ethanol by mass fraction to wash, and the solvent was removed by rotary evaporation after liquid separation to obtain a saturated polyolefin lubricating oil base oil; wherein, the catalyst C2 is that R is naphthalene α-aminoimine nickel complexes at the base time.

[0068] 2. Results

[0069] The catalytic activity of the catalytic system in this embodiment is 8.8×10 7 g / mol·h, the bromine value of the prepared lubricating base o...

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Abstract

The invention discloses a saturated polyolefin lubricating oil base oil and a preparation method thereof. The lubricating oil base oil provided by the invention is obtained by using the α-aminoimine nickel complex as the main catalyst, adding a cocatalyst and a chain transfer agent to form a catalytic system, and catalyzing ethylene oligomerization. In the process of α-aminoimine nickel-catalyzed ethylene oligomerization, the method obtains a highly branched product by using the chain walking process, and adds a chain transfer agent to reduce the molecular weight of the product, avoiding the occurrence of β-H elimination reaction, and inhibiting the double bond. The formation of saturated low molecular weight polyolefin lubricating oil base oil. The lubricating oil base oil obtained in the present invention has good oxidation stability and excellent fluidity, and at the same time, the high degree of branching endows it with low pour point and excellent viscosity-temperature performance, and does not require catalytic hydrogenation treatment, which greatly simplifies It has a good technical process and has a good application prospect in the field of high-performance synthetic lubricants.

Description

technical field [0001] The invention belongs to the technical field of lubricants, and more specifically relates to a saturated polyolefin lubricating oil base oil and a preparation method thereof. Background technique [0002] Poly-α-olefin (Poly-α-olefin, PAO) synthetic base oil has excellent viscosity-temperature performance, low-temperature fluidity and anti-oxidation stability, and has been widely used in the lubrication of automobiles and other machinery. The reason why PAO lubricating base oil has excellent viscosity-temperature performance and low-temperature fluidity is that it has a highly branched structure, especially with a high content of long-chain branches. At the same time, PAO lubricating oil base oil not only does not contain aromatics, nitrogen, sulfur and other easily oxidizable impurities, but also does not contain terminal double bonds after catalytic hydrogenation, so it has excellent anti-oxidation stability. [0003] However, the preparation of tra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/22C07C2/32C07C11/02C10M107/04C08F110/02C08F2/38C08F4/70C10N30/02C10N30/06
CPCB01J31/1805C07C2/32C08F110/02C10M107/04C10M2205/0225C10N2030/02C10N2030/06C07C11/02C08F2/38C08F4/7021
Inventor 高海洋石俊昇高洁廖恒钟柳
Owner SUN YAT SEN UNIV
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