Antiwear additive for lubricating oil

A technology of lubricating oil and additives, applied in the directions of additives, lubricating compositions, petroleum industry, etc., can solve problems such as unreported, application restrictions, etc., and achieve the effect of improving anti-wear performance

Inactive Publication Date: 2012-11-07
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Zinc dialkyldithiophosphate (ZDDP) has limited application in ashless oil due to metal content
[0006] The chemical general formula (1) and the preparation method of the compound have been reported in various literatures, but it has never been reported that the compound replaces zinc dialkyldithiophosphate (ZDDP) and is applied in ashless lubricating oil to solve the problem of ashless lubricating oil. Anti-wear problem of lubricating oil

Method used

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  • Antiwear additive for lubricating oil
  • Antiwear additive for lubricating oil
  • Antiwear additive for lubricating oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] 0.45% (mass) di-n-butyl phosphorothioate dodecylamine salt (compound (2)) is added in the 80W-90GL-5 vehicle gear oil complete formula that total dosage is 3.8% (mass), passed L-37 , L-42, L-33, L-60-1 four bench tests, and the anti-wear performance of the oil is 15% higher than that of GL-5 oil containing ZDDP.

Embodiment 2

[0020] Containing 0.50% (mass) di-n-butyl phosphorothioate octadecylamine salt (compound (3)) in the full formula of 320 heavy-duty industrial gear oil, the formula is formulated with 2.0% (mass) dosage of 320 heavy The heavy-duty industrial gear oil passed the FAG FE-8 bearing wear test, while the 320 heavy-duty industrial gear oil with the same formulation using ZDDP failed the FAG FE-8 bearing wear test.

Embodiment 3

[0022] The full formula of ashless hydraulic oil contains 0.20% (mass) of di-n-octyl phosphorothioate dodecylamine salt (compound (5)), and the formula is formulated with 0.80% (mass) of HM anti-wear The hydraulic oil has passed the V104 vane pump wear bench test, indicating that compound (5) has excellent anti-wear performance.

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PUM

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Abstract

The invention relates to an antiwear additive for lubricating oil. The addition amount of the additive in lubricating oil is 3 wt% to 1wt one tenth of one percent. The general chemical formula of the additive is as shown in the specification, wherein R1, R2 and R3 are H or an alkyl group with 1-18 carbon atoms or a functional group substituted hetero atom containing alkyl group with 1-40 carbon atoms; and R1, R2 and R3 can be the same or can be different.

Description

(1) Technical field [0001] The invention relates to an anti-wear additive for lubricating oil. (2) Background technology [0002] The anti-wear performance of lubricating oil has always been the key point of lubricating oil research. Zinc dialkyldithiophosphate (ZDDP) is widely used in various lubricating oils as an anti-wear, anti-oxidation and anti-corrosion multifunctional additive. However, in recent years, ashless lubricating oil has excellent thermal oxidation stability, hydrolytic stability, anti-emulsification, anti-foaming, filterability, air release, storage stability, and compatibility with various lubricating oils. , the application is more and more extensive. Zinc dialkyl dithiophosphates (ZDDP) have limited application in ashless oils due to their metal content. Seeking an ashless anti-wear additive to replace ZDDP in lubricating oil to solve the anti-wear problem of ashless lubricating oil is the focus of lubricating oil researchers. [0003] The general c...

Claims

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Application Information

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IPC IPC(8): C10M137/10C10N30/06
Inventor 伏喜胜糜莉萍华秀菱张龙华
Owner PETROCHINA CO LTD
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