Lubricating oil composition and method for improving comprehensive performances of lubricating oil

A lubricating oil composition and composition technology, applied in lubricating compositions, petroleum industry, additives, etc., can solve problems such as water separation and demulsification performance that cannot meet the requirements

Active Publication Date: 2016-06-01
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, with the increase of engine power and the extension of oil change intervals, the performance of the original oil products is required to be further improved, and the requirements for water separation and demulsification performance are also getting higher and higher, while the existing formula The water separation and demulsification properties in the medium sometimes cannot meet the requirements, therefore, further improvement is required

Method used

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  • Lubricating oil composition and method for improving comprehensive performances of lubricating oil
  • Lubricating oil composition and method for improving comprehensive performances of lubricating oil
  • Lubricating oil composition and method for improving comprehensive performances of lubricating oil

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Experimental program
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Effect test

Embodiment 1

[0063] The preparation of embodiment 1 tert-dodecyl mercaptan hexanoate S-1

[0064] In a 500mL three-necked flask with a motor stirrer and reflux water separation and condensation facilities, add 80 grams of No. 120 solvent gasoline, 100 grams of tert-dodecyl mercaptan (M=202.4, 0.49mol), and then add 15 grams of 98 % concentrated sulfuric acid, control the reaction temperature to be 90°C, add 56.9 grams of hexanoic acid (M=116.2, 0.49mol) dropwise with a separatory funnel, the time for the addition is 1 hour, then reflux for 3 hours, and separate the water in the reaction , when the water content reaches 8.7 grams (98.6%), stop the reaction, cool down, separate the vitriol oil, then wash the oil layer with deionized water until neutral, then distill the solvent under reduced pressure to obtain 146 grams of oily liquid, which is Tert-dodecyl mercaptan hexanoate S-1, S content 10.2%.

Embodiment 2 10

[0065] The preparation of embodiment 2 tetradecyl mercaptan propionate S-2

[0066] In a 500mL three-neck flask equipped with a motor stirrer and reflux water separation and condensation facilities, add 60 grams of No. 120 solvent gasoline, 90 grams of tetradecyl mercaptan (M=230.45, 0.39mol), and then add 11 grams of concentrated sulfuric acid , control the reaction temperature to be 95°C, add 28.9 grams of propionic acid (M=74, 0.39mol) dropwise with a separatory funnel, the dropwise addition time is 1.2 hours, then reflux for 4 hours, and separate the water in the reaction. When reaching 6.9 grams (98.3%), stop the reaction, lower the temperature, separate the water layer, then wash the oil layer with deionized water until neutral, then distill the solvent under reduced pressure to obtain 111.3 grams of oily liquid, which is tetradecyl Thiol propionate S-2, the S content is 11.3%.

Embodiment 3

[0067] The preparation of embodiment 3 propylene sulfonic acid mixtures

[0068]Add 80 grams of petroleum ether at 30°C to 60°C in a 500mL corrosion-resistant autoclave with stirring, heating, and cooling bath, then close the reactor, turn on the stirring, and pass it into a cooling bath for temperature control, and then use a high-pressure pump to Add 40 grams (0.952 mol) of propylene, and feed high-purity nitrogen, control the pressure of the reactor between 0.8 and 1 MPa, control the temperature of the reactor at 0 to 10°C, heat the cylinder containing sulfur trioxide, and place Measure on an electronic scale, and then control the heating temperature so that the pressure of the sulfur trioxide cylinder is greater than the pressure of the autoclave, and open the outlet valve of the sulfur trioxide cylinder, and then pass the gas into the vent pipe of the autoclave, and then into the liquid phase of the autoclave Carry out the sulfonation reaction in the middle, the amount of...

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Abstract

The invention provides a lubricating oil composition and a method for improving the comprehensive performances of lubricating oil. The composition comprises alkyl mercaptide, a demulsifier, a detergent, an antioxidant, a dispersant and a main quantity of lubricating base oil. The lubricating oil composition has excellent high temperature cleaning property, oxidation stability and wear resisting and friction reducing properties, especially has excellent high temperature cleaning property and emulsification resistance, realizes rapid and thorough water diversion, is suitable for lubricating marine diesel engines, and is especially suitable for lubricating crankcases of two-stroke low-speed crosshead marine diesel engines and lubricating medium-speed piston type diesel engines.

Description

technical field [0001] The invention relates to a lubricating oil composition, in particular to a lubricating oil composition suitable for marine diesel engines. Background technique [0002] With the development of my country's economy and the rapid development of the marine transportation industry, the demand for marine oil for large ships continues to increase, and the quality of oil products continues to improve. These oil products mainly include two-stroke low-speed crosshead cylinder oil, system oil and four-stroke medium-speed cylindrical piston diesel engine oil. Among them, although the working conditions of system oil and four-stroke medium-speed tubular piston diesel engine oil are not as harsh as those of marine cylinder oil, they still involve the operation where the fuel is diesel with high sulfur content and water exists. Therefore, oil products have certain requirements for the base value, generally the system oil is required to be within the range of 6-10mg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M161/00C10M169/04C10N40/25C10N30/06
Inventor 刘依农段庆华张耀
Owner CHINA PETROLEUM & CHEM CORP
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