Gasoline engine lubricating oil composition and preparation method thereof

A technology of lubricating oil composition and derivatives, applied in lubricating compositions, chemical instruments and methods, compounds of Group 5/15 elements of the periodic table, etc., can solve problems such as toxicity, flammability and explosion, catalyst poisoning, etc.

Active Publication Date: 2019-04-26
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Zinc dialkyldithiophosphate (ZDDP) is a multifunctional additive for anti-wear, anti-oxidation, and anti-corrosion, which is widely used in internal combustion engine oils, but phosphorus-containing additives can cause catalyst poisoning in exhaust gas treatment devices, so phosphorus-containing additives Additives are strictly limited in oil specifications. The ILSAC GF-3 gasoline engine oil specification requires the mass fraction of phosphorus content to be less than 0.1%, and the ILSACGF-5 gasoline engine oil specification requires the mass fraction of phosphorus content to be less than 0.08%. Therefore, more efficient ash-free The application of antiwear agent in gasoline engine oil has always been the goal of those skilled in the art
[0005] CN 1033811 proposes a sulfur phosphorus nitrogen type extreme pressure antiwear agent, which is a condensate obtained by the reaction of dialkyl dithiophosphoric acid, fatty amine, paraformaldehyde and propylene oxide. This agent can be used to prepare industrial gear oil and vehicle gear oil, but because propylene oxide has a low boiling point, is flammable, explosive and toxic, there is a greater potential safety hazard in the preparation of this extreme pressure antiwear agent

Method used

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  • Gasoline engine lubricating oil composition and preparation method thereof
  • Gasoline engine lubricating oil composition and preparation method thereof
  • Gasoline engine lubricating oil composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0180]

[0181]Under a nitrogen protective atmosphere, in a 250ml four-necked flask equipped with a stirrer, a thermometer, a condenser and a water separator, add 23.01 grams (86mmol) of octadecylamine and 20.27 grams (250mmol) of formaldehyde solution, 12.51 grams (105mmol) Benzotriazole and 32.79 g (110 mmol) of n-butyl 2-ethylhexyl dithiophosphoric acid were stirred rapidly, and the temperature was raised to 90° C. for 5 h. After the reaction was completed, the remaining water was distilled off under reduced pressure, cooled to room temperature, settled for 24 hours, filtered to remove impurities, and separated by column chromatography to obtain the final product, marked as M-1.

[0182] Product characterization data are as follows:

[0183] 1 H NMR (300MHz, CDCl 3 ): δ0.88(9H), 1.03-1.72(40H), 2.12-3.93(10H), 4.20-4.54(2H), 5.18-6.17(4H), 7.18-8.08(4H);

[0184] C 38 h 69 N 4 o 2 P.S. 2 Calculated for C 64.37, H 9.81, N 7.90, O 4.51, P 4.37, S 9.04; found: C 64....

Embodiment 2

[0186]

[0187] Under a nitrogen protective atmosphere, in a 500ml four-necked flask equipped with a stirrer, a thermometer, a condenser and a water separator, add 133.81 grams (410mmol) of octadecylpropylenediamine and 25.8 grams (860mmol) of paraformaldehyde, 55.89 Gram (380 mmol) of 5-ethylbenzotriazole and 134.15 g (450 mmol) of n-butyl 1-methylheptyl dithiophosphoric acid were stirred rapidly, and the temperature was raised to 110° C. for 4 hours. After the reaction was completed, the remaining water was distilled off under reduced pressure, cooled to room temperature, settled for 24 hours, filtered to remove impurities, and separated by column chromatography to obtain the final product, marked as M-2.

[0188] Product characterization data are as follows:

[0189] 1 H NMR (300MHz, CDCl 3 ): δ0.88(6H), 1.03-1.93(57H), 2.43-2.74(8H), 3.46-4.10(4H), 4.24-4.63(2H), 5.31-6.20(2H), 7.19-7.82(3H) ;

[0190] C 43 h 82 N 5 o 2 P.S. 2 Calculated for C 64.86, H 10.38, N...

Embodiment 3

[0192]

[0193] Under a nitrogen protective atmosphere, in a 500ml four-necked flask equipped with a stirrer, a thermometer, a condenser and a water separator, add 45 grams of polyisobutylene amine (number average molecular weight is about 600) and 9 grams (300mmol) of paraformaldehyde , 10.16 grams (85 mmol) of benzotriazole and 150 mL of toluene were stirred rapidly, the temperature was raised to 100 ° C, 24.4 grams (100 mmol) of di-n-butyldithiophosphoric acid were added dropwise, and the reaction was carried out at constant temperature for 5 hours. After the reaction was completed, the solvent and residual water were distilled off under reduced pressure, impurities were removed by filtration, and the final product was separated by column chromatography, which was marked as M-3.

[0194] Product characterization data are as follows:

[0195] 1 H NMR (300MHz, CDCl 3 ): δ0.86(9H), 0.97-1.91(86H), 3.46-4.87(6H), 5.23-6.35(2H), 7.19-8.08(4H);

[0196] Element content dete...

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Abstract

The invention provides a gasoline engine lubricating oil composition and a preparation method thereof. The gasoline engine lubricating oil composition comprises a benzotriazole derivative, a succinimide ashless dispersant, a salicylate cleaner, an alkylated diphenylamine antioxidant, a shielded phenol antioxidant, a thiocarbamate antioxidant, an organic molybdenum friction modifier, an OCP viscosity index modifier and lubricant base oil. The gasoline engine lubricating oil composition has the excellent high-temperature antioxidant property, antifriction performance and corrosion resistance, and can meet the requirements of high-performance gasoline engine lubricating oil.

Description

technical field [0001] The invention relates to a lubricating oil composition, in particular to a lubricating oil composition for gasoline engines. Background technique [0002] With the continuous improvement of engine technology and the increasingly stringent environmental regulations, gasoline engines are developing in the direction of miniaturization, heavy load, high power, and high compression ratio; new technologies such as turbocharging technology and lean-burn technology make the working conditions of gasoline engines more stable. Harsh, puts higher and higher demands on the lubricating oil of gasoline engines. [0003] The anti-wear performance of gasoline engine lubricating oil is a very important performance. In the ILSAC GF-3, GF-4, GF-5 series gasoline engine oil specifications, the program III engine test requires the wear of the cam and ejector rod to be ≤ 60um, and the program Ⅷ engine test requires that the weight loss of the connecting rod bearing bush is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M137/10C10M169/04C07F9/6518C10N30/06C10N30/10C10N30/12C10N40/25
CPCC10M137/105C10M169/048C07F9/65188C10M2219/066C10M2223/047C10M2227/08C10M2215/086C10M2203/1025C10M2205/0285C10M2207/144C10N2030/06C10N2030/10C10N2030/12C10N2030/64C10N2040/255
Inventor 苏朔孙文斌段庆华龙军武志强张倩张辉成欣张峰
Owner CHINA PETROLEUM & CHEM CORP
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