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Lubricating oil composition and method for improving antiwear and antifriction performances of lubricating oil

A technology of lubricating oil composition and lubricating base oil, which is applied in the direction of lubricating composition, petroleum industry, additives, etc. It can solve the problems of unfavorable environmental protection, reduce the volatility and content of phosphorus, achieve excellent anti-wear and anti-friction performance, and prolong the service life The effect of longevity

Active Publication Date: 2018-05-01
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, an excessively high Zn / P ratio will lead to more metal content in the lubricating oil when the same phosphorus content is provided, which will lead to more particulate matter in the exhaust emission, which is not conducive to environmental protection
[0004] Chinese patent CN 101659896 adopts to solve the problem of phosphorus volatility, a methyl isobutyl carbinol type zinc dialkyldithiophosphate is used, which reduces the volatility of phosphorus and reduces the amount of deposits in engine oil at the same time , but the price of its raw material methyl isobutyl carbinol is higher

Method used

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  • Lubricating oil composition and method for improving antiwear and antifriction performances of lubricating oil
  • Lubricating oil composition and method for improving antiwear and antifriction performances of lubricating oil
  • Lubricating oil composition and method for improving antiwear and antifriction performances of lubricating oil

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Embodiment 1

[0043] The preparation of embodiment 1 antioxidant antiwear agent

[0044] In a 250ml three-necked flask with a stirring device, add 141.6g (0.4mol) of diisooctyl dithiophosphoric acid, keep the temperature at 60°C, and add 5.7g of 30% hydrogen peroxide solution dropwise within 30 minutes (equivalent to hydrogen peroxide is 0.05 mol), continue to react for 2 hours after the dropwise addition, then raise the temperature to 70°C, add 13.4g (0.165mol) of zinc oxide, raise the temperature to 75-90°C and react for 3-5 hours, continue to heat up to 95-105°C, and depressurize The residual moisture was distilled off, and the antioxidant and anti-wear agent of the present invention was obtained by filtration, which was designated as sample 1.

Embodiment 2-4

[0045] The preparation of embodiment 2-4 antioxidant antiwear agent

[0046] According to the method of Example 1, the antioxidant and anti-wear agent of the present invention is prepared by using sulfuric acid of different structures, different molar ratios of sulfuric acid to hydrogen peroxide, and different molar ratios of hydrogen peroxide to zinc oxide, which are respectively designated as samples 2-4 , the reaction conditions are shown in Table 1.

[0047]Also listed comparative sample 1-4 in table 1, wherein comparative sample 1 is the zinc diisooctyl dithiophosphate (C8 primary alcohol ZDDP) of commercialization, domestic code name is T203; Comparative sample 2 is commercialized Butyl / isooctyl zinc dithiophosphate (C4 / C8 primary alcohol ZDDP), the domestic code is T202; comparative sample 3 is C3 / C6 secondary alcohol ZDDP, prepared according to the conventional ZDDP method; comparative sample 4 is C6 secondary alcohol ZDDP , prepared according to the conventional ZDDP...

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Abstract

The invention provides a lubricating oil composition and a method for improving the antiwear and antifriction performances of lubricating oil. The lubricating oil composition comprises 0.1 to 5% of anantioxidation and antiwear agent, 3 to 15% of a viscosity index improver, 1 to 10% of a dispersing agent, 1 to 15% of a clearing agent, 0.1 to 5% of an antioxidant and 0.1 to 5% of an oiliness agent,with the balance being base lubricating oil. A preparation method for the antioxidation and antiwear agent comprises the following steps: reacting thio-phosphoric acid with peroxide; then subjectinga reaction product obtained in previous step and a zinc-containing compound to a saponification reaction; and collecting an oil phase product. The antioxidation and antiwear agent and the lubricatingoil composition provided by the invention have excellent antiwear and antifriction performances and can prolong the service life of oil products.

Description

technical field [0001] The invention relates to a lubricating oil composition, in particular to a lubricating oil composition with excellent anti-wear and anti-friction properties. Background technique [0002] During use, lubricating oils inevitably come into contact with oxygen in the air and metal surfaces to undergo oxidation reactions and deteriorate, which increases the viscosity of the oil, increases the acid value, generates sludge and precipitation, and causes corrosion and wear to metal parts. In order to extend the service life of the oil, delay its oxidation process, and slow down the friction and wear of equipment, antioxidants and anti-wear agents can be added to the oil, which can effectively inhibit its oxidation reaction and improve the performance of the oil. [0003] As we all know, zinc dialkyldithiophosphate (ZDDP) has excellent anti-oxidation, anti-corrosion and anti-wear capabilities. Since it was developed in the 1940s, it has been widely used in vari...

Claims

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Application Information

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IPC IPC(8): C10M141/10C10M137/10C10M177/00C10N30/06C10N30/10
CPCC10M137/10C10M141/10C10M177/00C10M2203/1006C10M2205/022C10M2205/024C10M2207/021C10M2207/22C10M2207/283C10M2207/289C10M2215/04C10M2215/064C10M2219/046C10M2219/088C10M2223/045C10M2229/00C10N2030/06C10N2030/10
Inventor 张辉段庆华苏朔
Owner CHINA PETROLEUM & CHEM CORP
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