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Lubricating oil

A technology of lubricating oil and base oil, which is applied in the field of new friction reducer containing molybdenum nitrogen sulfur phosphate and its preparation. Anti-wear agent defects and other problems, to achieve the effect of improving high temperature oxidation resistance, friction reduction and anti-wear performance, high conversion efficiency, and easy separation

Active Publication Date: 2016-05-11
北京雅士科莱恩石油化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] But above-mentioned two kinds of organic molybdenum antifriction and antiwear agents all have defects
[0005] Defect 1: The content of phosphorus in dialkyl molybdenum dithiophosphate is high, which will cause adverse effects on the environment, and will also poison the automobile exhaust purification device and lose its due effect
[0006] Defect 2: Molybdenum dialkyl dithiocarbamate oil solubility, oxidation resistance, anti-friction and anti-wear properties are equivalent to dialkyl molybdenum dithiophosphate oxymolybdenum, and does not contain phosphorus, which is more in line with increasingly stringent environmental protection requirements and Lubricating Oil Additives Demanded by the Market
Although CS 2 It can evaporate quickly and will not cause special problems for metal materials, but a very small amount of free amine will cause damage to the bearing pad
The free amine produced by the decomposition of dithiocarbamate reacts with other components in the oil to form sludge. At the same time, the free amine reacts with the fluororubber sealing ring to deteriorate, causing seal leakage and affecting the normal operation of the machine.
Although this invention has prepared a phosphorus-free organic molybdenum additive and improved the friction and anti-wear properties to a certain extent, it will still be decomposed by heat during use to generate free amines, which will corrode metal materials and cause leakage
[0008] Chinese patent CN102311841B also realizes no phosphating, and overcomes the shortcomings of low solubility and easy oxidation of additives
In addition, the patent does not disclose the content of each element and the preparation method of the friction reducer of the present invention

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0034] The preparation method of the present invention roughly comprises the following steps:

[0035] Step 1: adding dialkyl dithiophosphoric acid, dialkyl dithiocarbamate, and inorganic molybdenum into the reaction vessel according to a predetermined molar ratio;

[0036] Step 2: heating and stirring the above mixture at 110-150° C. for 1-2.5 hours;

[0037] Step 3: Add refrigerant;

[0038] Step 4: When the temperature is lower than 10°C, start to drop carbon disulfide and drop it within 1 hour, and control the reaction time within 1 to 3 hours;

[0039]Step 5: After the reaction is completed, the product is washed three times with deionized water and twice with a solvent;

[0040] Step 6: After washing, remove the solvent by heating and / or under negative pressure of -0.05 ~ -0.09Mpa;

[0041] Step 7: According to the need, add the corresponding proportion of base oil.

[0042] It should be noted that "adding a corresponding proportion of base oil" refers to adding an a...

experiment example 1

[0064] Experimental Example 1 Various Index Tests

[0065] The test results of each component of the new friction reducer containing molybdenum thiophosphate are shown in Table 2.

[0066] Table 2

[0067]

[0068]

[0069] It should be noted that "moisture traces" means that the nitrogen-containing molybdenum sulfur phosphate compound of the present invention contains very little water, which will not affect the oil and make it emulsify and deteriorate, and fully guarantee the product performance.

experiment example 2

[0070] Experimental Example 2 Anti-friction and anti-wear performance test

[0071] The novel friction reducer of the present invention, commercially available molybdenum thiophosphate friction reducer and commercially available molybdenum carbamate friction reducer are respectively added to national standard SJ10W30 oil at a ratio of 0.5%. The anti-friction and anti-wear properties were measured by four-ball machine method. The experimental conditions are: oil temperature 80°C, time 30min, load 392N, test results are shown in Table 3.

[0072] table 3

[0073]

[0074] It can be seen from the test results in Table 3 that the nitrogen-containing molybdenum sulfur phosphate friction reducer of the present invention has more excellent friction reduction and antiwear properties than the other two friction reducers.

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Abstract

The invention relates to lubricating oil. The lubricating oil is characterized by comprising an anti-friction agent containing a sulfur molybdenum phosphate compound containing nitrogen. The lubricating oil has the advantages that the anti-friction agent in the lubricating oil is stable in property and capable of effectively lowering phosphorus content and protecting environments; the anti-friction agent has the good friction and wear resistance of sulfur molybdenum phosphate and the good high-temperature oxidation resistance of carbamic acid molybdenum and is good in comprehensive performance.

Description

[0001] This application is a divisional application with the original application number 201410247339.1, the original title of the invention is a novel friction reducer containing nitrogen-containing molybdenum sulfur phosphate and its preparation method, and the original application date is June 6, 2014. technical field [0002] The invention relates to a friction reducer for lubricating oil and a preparation method thereof, in particular to a novel friction reducer containing molybdenum nitrogen sulfur phosphate and a preparation method thereof. The anti-friction agent is suitable for various mineral oils and synthetic oils. It is a new type of anti-friction and anti-wear additive that contains nitrogen and molybdenum and has multiple functions such as anti-oxidation, anti-friction and anti-wear, and environmental protection. Background technique [0003] For a long time, the application of anti-friction and anti-wear agents has been lacking ideal products. Inorganic graph...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M139/00C07F11/00C10N30/06C10N30/10
CPCC07F9/17C07F11/005C10M137/10C10M139/00C10M2223/045C10N2030/06C10N2030/10C10N2030/12
Inventor 赫常山王宜献蔡得华
Owner 北京雅士科莱恩石油化工有限公司