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Poly-alpha-olefin synthetic lubricant base oil preparation method

A technology for synthesizing lubricating oil and base oil, applied in the directions of lubricating compositions, chemical instruments and methods, base materials, etc., can solve the problem of less effective components of lubricating oil base oil, avoid the rapid rise of reaction temperature and improve yield. rate, mild effect of the reaction process

Active Publication Date: 2019-05-14
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

[0009] In order to overcome the problem that there are more oligomers in the PAO produced by oligomerization reaction with low carbon olefins, such as 1-hexene, resulting in less effective components in lubricating oil base oils, the present invention provides a poly-alpha -A preparation method of olefin synthetic lubricating oil base oil, which realizes the control of the distribution of oligomerization products and the increase of the effective component content of lubricating oil base oil by changing the way of adding reactants and catalysts in the 1-hexene oligomerization reaction process Purpose

Method used

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Examples

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Effect test

Embodiment 1

[0087] Build the reaction device and ensure that the reaction system is airtight, and replace the air in the reaction system with nitrogen three times to ensure that the reaction is carried out in an anhydrous and oxygen-free environment. Take 20mL of 1-hexene and place it in a constant-pressure dropping funnel, add 0.5mL of 0.015mol / L bis(tetramethylcyclopentadiene) zirconium dichloride / toluene solution and 2mL of 1.5mol / L MAO / The toluene solution (the molar ratio of the aluminum in the cocatalyst to the zirconium in the main catalyst is 400) was added into the reaction kettle, and the temperature was gradually raised to 60° C. after being uniformly stirred by magnetic force and kept there. Utilize the constant pressure dropping funnel dropwise to add 20mL 1-hexene (the molar ratio of reactant and main catalyst is 2.13×10 4 ) into the reaction kettle, the rate of addition is controlled to be about 0.4mL / min, the temperature of the reaction system is controlled to be 60° C. b...

Embodiment 2

[0089] Same as Example 1, except that 20 mL of 1-hexene is added in one go. See Table 1 for the data.

Embodiment 3

[0091] Same as Example 1, except that the reaction temperature used is 50°C. See Table 1 for the data.

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Abstract

The invention relates to a poly-alpha-olefin synthetic lubricant base oil preparation method. According to the method, by changing of an adding mode of reactants, a main catalyst and auxiliary catalysts in a reaction process, reactant 1-hexene is dropwise added into a main catalyst and auxiliary catalyst mixed solution by a constant-pressure dropping funnel, so that selectivity of different oligomerization products can be changed. In 1-hexene oligomerization reaction carried out according to the method, high catalytic activity and selectivity of oligomerization products such as heptamer are achieved, the problem of high oligomer content in 1-hexene oligomerization reaction is solved, and regulation of oligomerization product distribution and increase of effective component content of lubricant base oil are realized. In addition, since the reactant 1-hexene is dropwise added, a reaction process is mild, and the problem of failure in reaction control due to rapid reaction temperature rise caused by release of a great quantity of heat in the reaction process is avoided.

Description

technical field [0001] The invention belongs to the technical field of lubricating oil base oil preparation, and relates to a method for preparing polyalpha-olefin synthetic lubricating oil base oil. Background technique [0002] Synthetic lubricating oil base oil is an important class of lubricating oil base oil prepared by organic synthesis. Compared with traditional mineral lubricating oil base oils, synthetic lubricating oil base oils have a certain chemical structure and excellent physical and chemical properties because the polymerized monomers are pure substances or homologues. There are many kinds of synthetic lubricating oil base oils, which are mainly divided into three categories: hydrocarbon oils, ester oils and other synthetic oils. Among them, polyalphaolefin synthetic oil (PAO) is a type of synthetic lubricating oil base oil that is used more. The output accounts for about 45% of the world's synthetic lubricant base oil market share. [0003] PAO is a type o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M107/10C10M105/04C07C2/22C07C2/30C07C9/22C07C9/15C07C9/14C08F110/14
Inventor 王彬刘珺郑明芳栗同林
Owner CHINA PETROLEUM & CHEM CORP
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