Two stroke engine lubricating oil composition and manufacturing method thereof

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

[0005] However, when these prior art compounds were used in two-stroke engine lubricating oils, there was still room for improvement in the high-temperature oxidation resistance, cleansing and dispersing properties, anti-wear properties and anti-rust 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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  • Two stroke engine lubricating oil composition and manufacturing method thereof
  • Two stroke engine lubricating oil composition and manufacturing method thereof
  • Two stroke engine lubricating oil composition and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0238] 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.

[0239] An example reaction is as follows:

[0240]

[0241] From the proton nuclear magnetic spectrum analysis of the polyisobutylene mercaptoph...

Embodiment 2

[0243]

[0244] 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.

[0245] Product characterization data are as follows:

[0246] 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);

[0247] 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;

[0248] C 24 h 28 N 2 OS calcd for ...

Embodiment 3

[0250]

[0251] 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.

[0252] Product characterization data are as follows:

[0253] 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) ;

[0254] 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 two stroke engine lubricating oil composition including a hindered phenol compound, an ashless dispersant, a metallic detergent, ZDDP, organic molybdenum, an ashless friction modifier and the main content of lubricating oil base oil; the structure of the hindered phenol compound is as shown in formula (I) in the specifications, groups are as defined in the specifications. The two stroke engine lubricating oil composition can meet the increasingly-stringent oxidation resistance requirements of high specification products, and can also show excellent clean dispersion properties, anti-wear and anti rust properties.

Description

technical field [0001] The present invention relates to a two-stroke engine lubricating oil composition. Specifically, the present invention relates to a two-stroke engine lubricating oil composition excellent in anti-oxidation performance, detergency and dispersion performance, anti-friction performance and anti-rust performance. Background technique [0002] Compared with four-stroke engines, two-stroke engines are widely used in various equipment, such as motorcycles, marine outboard engines, motor boats, and motorized pedals, due to their simple design, easy manufacture, easy maintenance, and high power per unit volume. Utility vehicles, generator sets, chain saws and power lawn mowers, etc. Two-stroke engine lubricating oil will be burned with the fuel during the working process, and the combustion products are easy to generate carbon deposits on spark plugs, and cause gas ring adhesion, exhaust port blockage, and wear of piston rings and cylinders, so it is necessary ...

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 苏朔段庆华武志强张辉
Owner CHINA PETROLEUM & CHEM CORP
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