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Preparation method of alcohol ester type environment lubricating oil

An environmentally friendly and lubricating oil technology, which is applied in the direction of lubricating compositions, petroleum industry, base materials, etc., can solve the problem of damaging lubrication and achieve long service life, environmental friendliness, and high oxidation resistance.

Inactive Publication Date: 2006-11-29
SHANGHAI UNIV
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

In addition, under air oxidation conditions, it will also polymerize to form a paint film. If it adheres to the surface of mechanical parts, it will destroy the lubrication effect.

Method used

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  • Preparation method of alcohol ester type environment lubricating oil
  • Preparation method of alcohol ester type environment lubricating oil

Examples

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Embodiment 1

[0021] Weigh a certain amount of soybean oil and place it in a three-necked flask, insert a separatory funnel with a certain amount of glacial acetic acid, hydrogen peroxide and concentrated sulfuric acid at one end of the bottle mouth; mix soybean oil and glacial acetic acid in a molar ratio of 1:2, and preheat to At 40°C, add glacial acetic acid, hydrogen peroxide and concentrated sulfuric acid dropwise while stirring, keep the temperature at 50°C, complete the dropwise addition within 1 hour, then keep the temperature at 60°C, and continue the reaction at this temperature for 3 hours; Pour out the material, put it in a separatory funnel and let it stand, then wash the crude product with 1.0% dilute lye until pH = 7, release the water after the layers are separated, and pour the oil phase back into the three-necked bottle. Then add a certain amount of glacial acetic acid and water-carrying agent toluene into the three-necked flask containing the oil phase; the oil phase and g...

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Abstract

The invention relates to an alcohol ester type green lubricating oil manufacturing method. It improves vegetable oil oxidation stability by chemical modification. It belongs to lubrication oil modification technique field. It adopts vegetable oil to do chemical medication, such as bean oil, castor oil, cotton oil, and so on. It uses H202 to change double bond into saturated epoxy bond, and open oxidation bond to form isomery ester by esterifying method. It processed lubricating oil has better anti-oxygen performance, viscosity, abrasion resistant, and viscosity-temperature characteristics.

Description

technical field [0001] The invention relates to a method for preparing an alcohol ester type environment-friendly lubricating oil, in particular to a method for preparing an alcohol ester type environment-friendly lubricating oil by chemically modifying vegetable oil to improve oxidation stability. It belongs to the technical field of lubricating oil modification technology. Background technique [0002] Vegetable oil can be used as a lubricant. Vegetable oils are products of photosynthesis and are renewable and biodegradable. However, due to the poor oxidation stability of vegetable oil, it can only be used for the lubrication of old-fashioned machinery with low temperature. Vegetable oils such as soybean oil, rapeseed oil, peanut oil or castor oil are easily oxidized under storage conditions, and free acids are separated, which can corrode metal parts of mechanical parts. In addition, under air oxidation conditions, it will also polymerize to form a paint film. If it ad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M101/04C11C3/00
Inventor 陶德华王彬
Owner SHANGHAI UNIV
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