Universal gear lubricating oil composition

A technology of gear lubricating oil and composition, applied in the directions of lubricating composition, petroleum industry, additives, etc., can solve the problems of insufficient attention to rust prevention performance, shortening engine life of engine, affecting engine performance under operating conditions, etc.

Active Publication Date: 2017-01-11
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, when these prior art compounds are used in gear oils, there is still room for improvement in the anti-oxidation performance, detergency performance and anti-wear performance of oil products
[0006] In addition, in addition to the adverse effects of depos...

Method used

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  • Universal gear lubricating oil composition
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  • Universal gear lubricating oil composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0241] 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 · Diethyl 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.

[0242] An example reaction is as follows:

[0243]

[0244] From the proton nuclear magnetic spectrum analysis of the polyisobutylene mercap...

Embodiment 2

[0246]

[0247] 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.

[0248] Product characterization data are as follows:

[0249] 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);

[0250] 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;

[0251] C 24 h 28 N 2 OS calcd for ...

Embodiment 3

[0253]

[0254] Under nitrogen protection atmosphere, in the 250ml four-neck 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.

[0255] Product characterization data are as follows:

[0256] 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) ;

[0257] 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, 153...

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PUM

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Abstract

The invention relates to a universal gear lubricating oil composition. The universal gear lubricating oil composition comprises a hindered phenol compound, an extreme pressure-antiwear additive, a metal passivator, an ashless friction modifier and a major amount of lubricating base oil, wherein the hindered phenol compound has a structure as shown in a formula (I) which is described in the specification. Each group in the formula (I) is as defined in the specification. The universal gear lubricating oil composition in the invention can meet the increasingly stringent requirement of modern products with higher specifications on oxidation resistance and show excellent cleaning and dispersion properties, anti-wear performance and anti-rust performance.

Description

technical field [0001] The present invention relates to a general purpose gear lubricating oil composition. Specifically, the present invention relates to a general-purpose gear lubricating oil composition meeting the requirements of GL-5 and above specifications for extreme-pressure heavy-duty gear oil products. Background technique [0002] Vehicle gear oil is used for the lubrication of gears, bearings and other parts of mechanical transmissions, drive axles and steering gears, and plays the role of lubrication, cooling, rust prevention and buffering. With the development of the automobile industry, the volume of the gearbox has become smaller, the load has increased, and the operating conditions have become more severe, resulting in an increase in the temperature of the gear oil, requiring the gear oil to have higher oxidation stability. Among them, modern cars adopt hyperbolic gears, the working conditions are more severe, and the requirements for the performance of au...

Claims

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Application Information

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IPC IPC(8): C10M135/30C10M135/36C10M143/06C10N40/04C10N30/06C10N30/04C10N30/10C10N30/12
Inventor 苏朔龙军段庆华武志强周涵赵毅赵晓光
Owner CHINA PETROLEUM & CHEM CORP
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