A kind of antioxidant antiwear agent, its preparation method and lubricating oil composition

A lubricating oil composition, anti-oxidation and anti-wear agent technology, applied in the field of anti-oxidation and anti-wear agents, can solve the problems of reducing phosphorus volatility, containing, unfavorable to environmental protection, etc.

Active Publication Date: 2021-06-11
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • A kind of antioxidant antiwear agent, its preparation method and lubricating oil composition
  • A kind of antioxidant antiwear agent, its preparation method and lubricating oil composition
  • A kind of antioxidant antiwear agent, its preparation method and lubricating oil composition

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Embodiment 1

[0021] The preparation of embodiment 1 antioxidant antiwear agent

[0022] 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

[0023] The preparation of embodiment 2-4 antioxidant antiwear agent

[0024] 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.

[0025] 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 ZDD...

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Abstract

The invention provides an anti-oxidation and anti-wear agent, a preparation method thereof and a lubricating oil composition containing the anti-oxidation and anti-wear agent. The preparation method of the anti-oxidation and anti-wear agent of the present invention comprises: reacting sulfuric acid with peroxide, then carrying out saponification reaction with zinc-containing compounds, and collecting oil phase products. The anti-oxidation and anti-wear agent and lubricating oil composition of the present invention have excellent anti-oxidation and anti-wear properties and can prolong the service life of oil products.

Description

technical field [0001] The invention relates to an anti-oxidation and anti-wear agent, in particular to an anti-oxidation and anti-wear agent suitable for lubricating oil. 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 various lubri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M137/10C10M169/04C10N30/06C10N30/10C10N10/04
CPCC10M137/10C10M169/04C10M2207/2805C10M2223/045C10N2010/04C10N2030/06C10N2030/10C10N2030/72
Inventor 张辉段庆华苏朔
Owner CHINA PETROLEUM & CHEM CORP
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