Lubricant base oil with long-carbon-chain diacid duplicate-ester structure, and preparation method and application of lubricant base oil

A technology of lubricating oil base oil and long carbon chain dibasic acid, which is applied in the field of lubricating oil base oil, can solve the problems of no industrial production, long post-processing time, and difficult product separation, and achieve high viscosity index and short production cycle , good biodegradability

Active Publication Date: 2015-08-19
INST OF MICROBIOLOGY - CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] As a new type of ester base oil, long carbon chain dibasic acid complex esters have serious energy consumption due to problems such as difficult product separation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0034] Example 1:

[0035] In a four-necked flask equipped with a stirrer, a temperature controller, a nitrogen conduit, and a condenser, add 85g of trimethylolpropane dioctyl ester, 46g of dodecanedioic acid, 1g of p-toluenesulfonic acid, and 150ml of toluene. The reaction was conducted for 3.5 hours at 135°C. The conversion rate was measured to be the maximum at this time, which was 95.2%, and the reaction was stopped.

[0036] Mix cyclohexane, isopropanol, and sodium chloride at 1:5:0.1 (volume:volume:weight), measure 100ml, add it to the beaker containing the crude product, and add 5% hydroxide at the same time 60ml of sodium solution. After stirring for 10 minutes, let it stand for 30 minutes to remove the water layer. Wash with deionized water for 4 to 5 times until the liquid is neutral.

[0037] Put the washed crude product into a molecular distillation device for solvent removal and purification. The first-stage distillation conditions are 120°C, 500pa; the second-stage d...

Example Embodiment

[0038] Example 2:

[0039] In a four-necked flask equipped with a stirrer, a temperature controller, a nitrogen conduit, and a condenser, 85g of trimethylolpropane diisooctyl ester, 46g of dodecanedioic acid, 1g of p-toluenesulfonic acid and 150ml of toluene were added. The temperature was raised to 135°C and reacted for 4 hours. The conversion rate was measured at this time, which was 95.7%, and the reaction was stopped.

[0040] Mix cyclohexane, ethanol and potassium chloride at 1:10:0.2 (volume:volume:weight), measure 100ml, add it to the beaker containing the crude product, and add potassium hydroxide solution with a concentration of 5% 60ml. After stirring for 10 minutes, let it stand for 30 minutes to remove the water layer. Wash with deionized water for 4 to 5 times until the liquid is neutral.

[0041] Put the washed crude product into a molecular distillation device for solvent removal and purification. The first-stage distillation conditions are 120°C, 500pa; the second-...

Example Embodiment

[0043] Example 3:

[0044] In a four-necked flask equipped with a stirrer, a temperature controller, a nitrogen conduit, and a condenser, 85g of trimethylolpropane diisooctyl ester, 43.2g of undecanedioic acid, 1g of p-toluenesulfonic acid, and 100ml of toluene were added , The temperature was raised to 130°C, and the reaction was conducted for 3.5 hours. It was determined that the conversion rate was the largest at this time, which was 96.2%, and the reaction was stopped.

[0045] Mix cyclohexane, isopropanol, and sodium chloride at 1:5:0.1 (volume:volume:weight), measure 100ml, add it to the beaker containing the crude product, and add 5% hydroxide at the same time 60ml of sodium solution. After stirring for 10 minutes, let it stand for 30 minutes to remove the water layer. Wash with deionized water for 4 to 5 times until the liquid is neutral.

[0046] Put the washed crude product into a molecular distillation device for solvent removal and purification. The first-stage distill...

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Abstract

The invention provides lubricant base oil with a long-carbon-chain diacid duplicate-ester structure. The base oil has a general chemical formula I: (R2COO)n-R1-OOC-R-COO-R3-(OOCR2)n, wherein R is C9-C12 straight chain alkylene; R1 and R3 are same or different C1-C6 saturated alkyl; R2 is C3-C18 alkyl; and n is an integer of 1-6. The duplicate-ester lubricant base oil has advantages of a low condensation point, a large viscosity index, a high flash point, and good biodegradability, has kinematic viscosity of 100-1000 mm<2>/s at 40 DEG C, and is suitable for being used as medium/high viscosity lubricant base oil.

Description

technical field [0001] The invention relates to a lubricating oil base oil with a long carbon chain dibasic acid complex ester structure and a preparation method and application thereof. Background technique [0002] As a synthetic oil with excellent performance, ester base oil is widely used in aviation, aerospace, marine, vehicles, heavy machinery, compression machine, polar conditions and other fields. Compared with other synthetic oils, ester oils are easy to grasp because of their molecular structure, and can be easily modified. By increasing or decreasing their molecular weight and number of branched chains, a large number of new varieties with different uses can be derived. [0003] At present, high power, high performance, and special purposes have become the obvious trend of mechanical development, which also puts forward more and more stringent requirements for lubricating oil, such as high temperature resistance, ultra low temperature, long service life, etc. At...

Claims

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Application Information

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IPC IPC(8): C10M105/38C07C69/708C07C67/31C10N30/08
Inventor 杨勇于得江晏礼明傅深展陈远童
Owner INST OF MICROBIOLOGY - CHINESE ACAD OF SCI
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