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Gasoline engine lubricating oil composition

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

Active Publication Date: 2016-12-28
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when these prior art compounds were used in gasoline engine oils, there was still room for improvement in the anti-oxidation properties, cleansing and dispersing properties and anti-wear 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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  • Gasoline engine lubricating oil composition
  • Gasoline engine lubricating oil composition
  • Gasoline engine lubricating oil composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0250] 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 removed by distillation 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.

[0251] An example reaction is as follows:

[0252]

[0253] From the proton nuclear magnetic spectrum analysis of the polyisobutyl...

Embodiment 2

[0255]

[0256] 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.

[0257] Product characterization data are as follows:

[0258] 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);

[0259] 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;

[0260] C 24 h 28 N 2 OS calcd for ...

Embodiment 3

[0262]

[0263]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.

[0264] Product characterization data are as follows:

[0265] 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) ;

[0266] 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, 15...

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Abstract

The present invention relates to a gasoline engine lubricating oil composition, comprising shielding phenolic compounds, antioxidants, ashless dispersants, metal detergents, ZDDP, organic molybdenum, ashless friction modifiers and a major amount of lubricating oil base oil; The structure of shielding phenol compound is shown in formula (I): The definition of each group in the formula (I) is the same as the description. The gasoline engine lubricating oil composition of the present invention can not only meet the increasingly stringent requirements for oxidation resistance of today's higher specification products, but also exhibit excellent cleansing and dispersing properties, anti-wear properties and anti-rust properties.

Description

technical field [0001] The present invention relates to a gasoline engine lubricating oil composition. Specifically, the invention relates to a gasoline engine lubricating oil composition meeting the requirements of SL / GF-3, SM / GF-4, SN / GF-5 and above gasoline engine oil products. Background technique [0002] The high power and miniaturization of gasoline engines reduce the airflow around the engine, which increases the requirements for the anti-oxidation ability of engine lubricating oil and the ability to inhibit piston deposits. With the increasingly stringent emission regulations, the requirements for engine emissions are becoming more and more stringent, which also puts forward higher requirements for the performance of engine lubricating oil. The upgrading of gasoline engine lubricating oil has also continued to increase the requirements for oil anti-oxidation, piston cleaning, sludge dispersion, and anti-wear performance. At present, the product specifications of hi...

Claims

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Application Information

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