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High-speed diesel fuel engine lubricating oil composition in railway and preparation method thereof

A technology of lubricating oil composition and diesel engine, which is applied in the direction of lubricating composition, petroleum industry, additives, etc., and can solve the problems of engine shortening engine life, insufficient attention to antirust performance, and affecting engine working condition performance, etc.

Active Publication Date: 2017-04-26
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, when these compounds of the prior art are used in lubricating oils for railway medium and high-speed diesel engines, there is still room for improvement in the high-temperature oxidation resistance, cleansing and dispersing properties, anti-wear properties and anti-corrosion properties of the oil products.
In addition, in addition to the adverse effects of deposits, the corrosion of the engine will also seriously shorten the life of the engine, and the corrosion of some key parts will also affect the working performance of the engine to a large extent
The existing technology does not pay enough attention to the anti-rust performance

Method used

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  • High-speed diesel fuel engine lubricating oil composition in railway and preparation method thereof
  • High-speed diesel fuel engine lubricating oil composition in railway and preparation method thereof
  • High-speed diesel fuel engine lubricating oil composition in railway and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0234] In a 500ml four-neck flask equipped with a stirrer, thermometer, condenser and dropping funnel, add 58.79g (0.323mol) of 2-tert-butyl-6-mercaptophenol, 6.88g (0.048mol) of boron trifluoride Ethyl ether (catalyst for alkylation reaction), 100ml of n-hexane solvent and 161.61g (0.162mol) of polyisobutene (Mn=1000, manufactured by Jihua Group Fine Chemicals Co., Ltd.) were reacted at 80°C for 2h. After the reaction, the reaction mixture was washed once with 5% potassium hydroxide solution by mass fraction, and washed to neutrality with hot water to remove the catalyst, and then the solvent and unreacted phenol were distilled off under reduced pressure to obtain polyisobutylene mercaptophenol, hydroxyl The value was 53.49 mgKOH / g. For the determination of hydroxyl value, refer to the acetic anhydride method in GB / T7383-2007.

[0235] An example reaction is as follows:

[0236]

[0237] From the proton nuclear magnetic spectrum analysis of the polyisobutylene mercaptoph...

Embodiment 2

[0239]

[0240] Under a nitrogen protection atmosphere, in a 250ml four-necked flask equipped with a stirrer, a thermometer, a condenser and a dropping funnel, add 30.58 grams (156 mmol) of 2-mercapto-4-methyl-6-methylphenol, 9.29 grams ( 112mmol) formaldehyde, 32.38g (176mmol) N-phenyl-p-phenylenediamine and 100mL toluene, stirred rapidly, and reacted at 100°C for 2h. After the reaction was finished, the solvent and a small amount of water generated were distilled off under reduced pressure, and the shielded phenol product with the structure shown in the title was obtained through column chromatography separation.

[0241] Product characterization data are as follows:

[0242] 1 H NMR (300MHz, CDCl 3 ): δ1.40(9H), 2.37(3H), 4.02(1H), 4.83(2H), 6.95-7.00(12H), 7.26(2H), 7.55(1H);

[0243] 13 C NMR (75MHz, CDCl 3 ): δ21.2, 30.1, 34.1, 49.9, 114.3, 118.9, 119.4, 121.8, 122.2, 125.8, 126.5, 129.5, 131.8, 132.3, 133.5, 143.3, 150.8;

[0244] C 24 h 28 N 2 OS calcd for ...

Embodiment 3

[0246]

[0247] Under nitrogen protection atmosphere, in the 250ml four-necked flask that stirrer, thermometer, condenser tube and dropping funnel are equipped with, add 31.65 grams (133mmol) 2,6-di-tert-butyl-4-mercaptophenol, 1.86 grams (62mmol ) formaldehyde, 28.15 grams (153 mmol) of N-phenyl-p-phenylenediamine, 0.75 grams (7.5 mmol) of hydrochloric acid and 150 mL of isopropanol, stirred rapidly, and reacted at 25 ° C for 24 h. After the reaction was finished, the solvent and a small amount of water generated were distilled off under reduced pressure, and the shielded phenol product with the structure shown in the title was obtained through column chromatography separation.

[0248] Product characterization data are as follows:

[0249] 1 H NMR (300MHz, CDCl 3 ): δ1.36-1.54(18H), 3.75(1H), 4.80(2H), 5.32(1H), 6.80(2H), 6.97(5H), 7.17(2H), 7.26(2H), 7.55(1H) ;

[0250] 13 C NMR (75MHz, CDCl 3 ): δ29.6, 34.6, 51.2, 119.4, 121.8, 126.5, 129.5, 131.4, 136.6, 144.5, 1...

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Abstract

The invention relates to a high-speed diesel fuel engine lubricating oil composition in a railway. The high-speed diesel fuel engine lubricating oil composition comprises a hindered phenol compound, a dispersing agent, a metal cleaning agent, an anti-wear reagent at extreme pressure, an ashless friction improver and a main amount of lubricating oil base oil. The structure of the hindered phenol compound is shown as the formula (I), the formula (I) is shown the specification, and the definitions of all groups in the formula (I) are shown in the specification. The high-speed diesel fuel engine lubricating oil composition in the railway can meet the increasingly strict requirement of current products with higher specifications for oxidation resisting performance, and shows excellent clean dispersing performance, antiwear performance and antirust performance.

Description

technical field [0001] The invention relates to a lubricating oil composition for railway medium and high-speed diesel engines. Background technique [0002] Lubricating oils for railway heavy-duty diesel engines need to have high oxidation stability and limit the formation of engine deposits. In addition, they must have high resistance to bearing corrosion and have a high base number to neutralize Acidic oxidation product of fuel combustion blow-by gas. [0003] Many railway heavy-duty engine bearings use silver-containing materials for the coating and lining parts, such as using silver alloys in piston pin bearings and turbocharger bearings, or plating a layer of silver on the surface of the base iron material. These silver bearings or silver-plated parts have an excellent feature called less fatigue, but on the other hand, they also bring a special problem to the lubrication of the engine, that is, the problem of large sulfidation corrosion wear. The actual corrosion is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M135/30C10M135/36C10M151/02C10M169/04C10N30/10C10N30/04C10N30/06C10N30/12C10N40/25
Inventor 苏朔龙军段庆华武志强
Owner CHINA PETROLEUM & CHEM CORP
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