Method for preparing high viscosity lubricating oil

A lubricating oil and high-viscosity technology, which is applied in the direction of lubricating compositions, petroleum industry, base materials, etc., can solve the problems of no description, large amount of catalyst, etc., and achieve the effects of low pour point, high catalytic activity, and high single-pass conversion rate

Inactive Publication Date: 2009-10-28
DALIAN MARITIME UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But this patent also does not explain how to prepare 100 ℃ kinematic viscosity greater than 40mm 2 / s lubricant product method
Moreover, when the patent prepares higher viscosity lubricating oil, the amount of catalyst used is relatively large

Method used

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  • Method for preparing high viscosity lubricating oil
  • Method for preparing high viscosity lubricating oil
  • Method for preparing high viscosity lubricating oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] In a clean and dry 200ml agitated autoclave, add 120ml of 1-decene and 20ml of cyclohexane, heat to 80°C, add 2.0g of aluminum trichloride while stirring, and then add 2.0g of trimethylamine hydrochloride , and finally add 0.5g ferric chloride. Pressurize to 1.0Mpa with nitrogen, stir vigorously, and react at 130°C for 30 minutes. After the reaction was finished, the product was left standing in a separatory funnel, and the product was divided into two layers, the lower layer being the ionic liquid, and the upper layer being the organic phase. After separation, the organic phase is washed with water to remove a small amount of dissolved catalyst. The organic phase was distilled off under reduced pressure to remove 1-decene as the reaction to obtain polyalphaolefin oil with a yield of 78% and a kinematic viscosity of 190.36mm at 40°C. 2 / s, the kinematic viscosity at 100°C is 28.25mm 2 / s, the viscosity index is 187.

Embodiment 2

[0028] The experimental method is the same as in Example 1, except that 0.5 g of tin chloride as a procatalyst is added. Obtain polyalpha-olefin oil, yield 81%, 40 ℃ kinematic viscosity is 240.87mm 2 / s, the kinematic viscosity at 100°C is 31.43mm 2 / s, the viscosity index is 173.

Embodiment 3

[0030]In a clean and dry 200ml agitated autoclave, add 20ml of 1-decene, 20ml of 1-octene, and 20ml of 1-dodecene, heat to 80°C, add 2.0g of aluminum trichloride while stirring, and then add three Ethylamine hydrochloride 2.0g, finally add 0.5g tin chloride. Pressurize to 1.0Mpa with nitrogen, stir vigorously, and react at 130°C for 30 minutes. After the reaction was finished, the product was left standing in a separatory funnel, and the product was divided into two layers, the lower layer being the ionic liquid, and the upper layer being the organic phase. After separation, the organic phase is washed with water to remove a small amount of dissolved catalyst. The organic phase was distilled off under reduced pressure to remove the reacted 1-decene to obtain polyalphaolefin oil with a yield of 75% and a kinematic viscosity of 253.66mm at 40°C. 2 / s, the kinematic viscosity at 100°C is 34.25mm 2 / s, the viscosity index is 182.

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Abstract

The invention relates to a method for preparing high viscosity lubricating oil. A catalyst system consisting of acid ion liquid as a main catalyst and stannic chloride, iron chloride, gallium chloride or alkylaluminium halide as cocatalysts contacts 1-olefin under oligomerization condition to perform polyreaction. One or more straight-chain 1-olefins of C6-C18 are taken as raw materials to contact the ion liquid and metal halide at a reaction temperature of between 60 DEG C below zero and 180 DEG C and under a reaction pressure of between 0.1 and 10 MPa to obtain a product with the viscosity of between 10 and 1,000 mm.s. The high viscosity poly alpha-olefin can be used as lubricating oil base oil or lubricating oil additive. The catalysts related in the invention can be recycled; and the technological process does not generate pollutants such as waste solvent and the like, so the method is a green lubricating oil synthesizing process.

Description

technical field [0001] The invention relates to a method for preparing high-viscosity lubricating oil by using ionic liquid as the main catalyst and metal halide as the co-catalyst. technical background [0002] Polyalphaolefin, referred to as PAO, is a kind of synthetic lubricating oil. In recent years, due to the need for energy saving and the further improvement of the thermal stability requirements of engine oils, mineral oils alone cannot be used to formulate high-grade oils that meet the harsh requirements of use. As a kind of synthetic lubricating oil, PAO has liquid Wide range, good viscosity-temperature performance, low pour point, high viscosity index, small evaporation loss, good susceptibility to additives, good high-temperature thermal oxidation stability, less coking, non-toxic, and wetting effect on the skin, etc., its demand growing day by day. [0003] Poly-α-olefin lubricating oil (PAO) can be prepared into various viscosity grades according to different ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M177/00C10M107/10
Inventor 蒋山阎圣刚李刚月申志明樊宏飞
Owner DALIAN MARITIME UNIVERSITY
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