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Lubricating oil base oil and preparation method thereof

A technology of lubricating base oil and tungoleic acid, which is applied in the preparation of carboxylate, carboxylate, lubricating composition, etc., can solve the problems of high pour point and limited use, achieve low pour point and increase the degree of branching , the effect of high flash point

Active Publication Date: 2020-05-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the raw materials for the preparation of dimer acid, there is a partial straight chain connection in the carbon chain connection between the diesters, which leads to a high pour point, and its use is subject to certain restrictions.

Method used

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  • Lubricating oil base oil and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Use commercial tungoleic acid (iodine value 150g / 100g, acid value 180mgKOH / g). Take 100 grams of commercial oleic acid in a 250 mL four-necked flask, add 0.5 g of tert-butylhydroquinone at the same time, stir at 300 rpm, purging with nitrogen for 30 min, heat up to 220 ° C for 4 h, stop heating, and separate by molecular distillation For purification, the distillation pressure of the molecular distillation apparatus is ≤2Pa, and the distillation temperature is 170°C to remove unreacted monoacids to obtain products mainly composed of dimer acids.

[0031] (2) Take 55.7g of the above-mentioned dimer acid-based product, 39.1g of isooctyl alcohol, put them in a 250mL four-neck flask, add 0.668g of p-toluenesulfonic acid as a catalyst, and react at 120°C for 4 hours to obtain a lubricating oil base oil products.

Embodiment 2

[0033] (1) Use commercial tungoleic acid (iodine value 150g / 100g, acid value 180mgKOH / g). Take 100 grams of commercial oleic acid in a 250 mL four-necked flask, add 0.5 g of tert-butylhydroquinone at the same time, stir at 300 rpm, purging with nitrogen for 30 min, heat up to 220 ° C for 4 h, stop heating, and separate by molecular distillation For purification, the distillation pressure of the molecular distillation apparatus is ≤2Pa, and the distillation temperature is 170°C to remove unreacted monoacids to obtain products mainly composed of dimer acids.

[0034] (2) Take 55.7g of the above dimer acid-based product, 39.1g of ethanol, put them in a 250mL four-neck flask, add 0.668g of p-toluenesulfonic acid as a catalyst, and react at 120°C for 4h to obtain a lubricating base oil product .

Embodiment 3

[0036](1) Use commercial tungoleic acid (iodine value 150g / 100g, acid value 180mgKOH / g). Take 100 grams of commercial oleic acid in a 250 mL four-necked flask, add 0.5 g of tert-butylhydroquinone at the same time, stir at 300 rpm, purging with nitrogen for 30 min, heat up to 220 ° C for 4 h, stop heating, and separate by molecular distillation For purification, the distillation pressure of the molecular distillation apparatus is ≤2Pa, and the distillation temperature is 170°C to remove unreacted monoacids to obtain products mainly composed of dimer acids.

[0037] (2) Take 55.7g of the above dimer acid-based product, 39.1g of n-butanol, put them in a 250mL four-neck flask, add 0.668g of p-toluenesulfonic acid as a catalyst, and react at 120°C for 4h to obtain a lubricating oil base oil products.

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Abstract

The invention relates to a preparation method of a lubricating oil base oil. The preparation method comprises steps: adopting eleostearic acid as a raw material, carrying out nitrogen purging while stirring in the presence of a polymerization inhibitor, heating to a temperature of 180-230 DEG C, carrying out a reaction, and removing single acid after the reaction to obtain a product; and mixing the product with a monohydric alcohol, and carrying out esterification reaction in the presence of a catalyst to obtain the lubricating oil base oil. The lubricating oil base oil disclosed by the invention is prepared by preparing a dimer acid by taking eleostearic acid as a raw material and then reacting the dimer acid with the monohydric alcohol, and has the advantages of low pour point, high flash point, good lubricity, good bearing capacity and the like.

Description

technical field [0001] The invention belongs to the field of preparation of lubricating oil base oil, and in particular relates to a lubricating oil base oil and a preparation method thereof. Background technique [0002] In recent years, with the development of the economy, the society's demand for vehicle lubricants has grown rapidly. In some special occasions, such as the use of metal processing oil, chain saw oil, outboard two-stroke engine oil and open gear oil, etc. system or disposable circulation system, due to use, leakage, etc., the lubricating oil will inevitably be discharged directly into the environment. Mineral-based lubricating oils have poor biodegradability in the natural environment, accumulate in the environment and cause pollution to the ecological environment. Major oil companies in the world have started to develop environmentally friendly green lubricating oils to replace traditional mineral-based lubricating oils. Base oil is the decisive factor af...

Claims

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Application Information

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IPC IPC(8): C10M105/36C07C67/08C07C69/602C10N30/06C10N30/04
CPCC10M105/36C07C67/08C07C51/353C10M2207/2825C07C69/602C07C57/13
Inventor 曹长海李澜鹏王宜迪程瑾李秀峥彭绍忠
Owner CHINA PETROLEUM & CHEM CORP
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