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Lubricating oil composition for four-stroke motorcycle engine and manufacturing method thereof

A technology for lubricating oil compositions and motorcycles, applied in the directions of lubricating compositions, petroleum industry, additives, etc., can solve problems such as shortening engine life of engines, insufficient attention to rust prevention performance, and affecting engine performance under working conditions.

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 prior art compounds were used in four-stroke motorcycle engine lubricating oils, there was still room for improvement in the high-temperature oxidation resistance, cleansing and dispersing properties and anti-wear properties of the oil.
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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  • Lubricating oil composition for four-stroke motorcycle engine and manufacturing method thereof
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  • Lubricating oil composition for four-stroke motorcycle engine and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0236] 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.

[0237] An example reaction is as follows:

[0238]

[0239] From the proton nuclear magnetic spectrum analysis of the polyisobutylene mercaptoph...

Embodiment 2

[0241]

[0242] 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.

[0243] Product characterization data are as follows:

[0244] 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);

[0245] 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;

[0246] C 24 h 28 N 2 OS calcd for ...

Embodiment 3

[0248]

[0249] 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.

[0250] Product characterization data are as follows:

[0251] 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) ;

[0252] 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 lubricating oil composition for a four-stroke motorcycle engine, comprising a shielded phenol compound, an antioxidant, an ashless dispersant, a metal clearing agent, ZDDP, an ashless friction improver and a main amount of lubricating oil base oil, wherein the structure of the shielded phenol compound is as shown in a formula (I)(as shown in the specification), and the definition of each group is as shown in the specification. The lubricating oil composition for the four-stroke motorcycle engine not only can meet the increasingly strict requirement of higher standard products on antioxygenic property, but also exhibits excellent clearing dispersion property, abrasion resistance and antirust property.

Description

technical field [0001] The invention relates to a four-stroke motorcycle engine lubricating oil composition. Specifically, the present invention relates to a four-stroke motorcycle engine lubricating oil composition with excellent cleansing and dispersing properties and anti-wear properties. Background technique [0002] Generally speaking, the engine of a car is lubricated separately from transmission mechanisms such as transmissions and clutches, while all functional parts of a four-stroke motorcycle engine are designed as an integral crankcase. Four-stroke motorcycle engine lubricating oil is also used for the lubrication of wet multi-disc clutches, high-speed and transmission gears, shifting mechanisms, and pistons, cylinders, intake and exhaust valves and other moving parts. It needs to have excellent comprehensive performance. Compared with the four-stroke automobile engine, the four-stroke motorcycle engine has higher output power, more severe working conditions, fas...

Claims

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Application Information

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IPC IPC(8): C10M135/30C10M135/36C10M151/02C10M169/04C10N30/10C10N30/04C10N30/06C10N30/12C10N40/25
Inventor 苏朔段庆华武志强张辉
Owner CHINA PETROLEUM & CHEM CORP
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