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Gasoline engine oil composition and preparation method thereof

A technology of gasoline engine oil and composition, applied in the directions of lubricating composition, petroleum industry, additives, etc., can solve the problems of non-optimal formula performance and large amount of addition, etc.

Active Publication Date: 2020-04-21
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Among the compositions reported in the above patents, although they can meet the requirements of various gasoline engine oil specifications, the performance in some formulations is not optimal. At 5% to 10%, and the low-speed pre-ignition phenomenon has not been completely resolved

Method used

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

Examples

Experimental program
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Effect test

Embodiment 1

[0101] The preparation of embodiment 1 dispersion type ethylene-propylene copolymer viscosity index improver DOCP-1

[0102] In a 500 ml pressure reactor with temperature control, water cooling and stirring, add 10 grams of ethylene-propylene copolymer (Mw=182000, (0.000055mol) ethylene content 58%, purchased from China Petroleum Jilin Petrochemical Company), cut into 0.5 cm 3 Then add 90 grams of 150SN (produced by Sinopec Gaoqiao Petroleum Company), and add 1.137 mg (0.001mol) of tetrakis(pentafluorophenyl)phenylferric chloride porphyrin (M=1136.7) (dissolved in 2 g In acetonitrile), after adding, the temperature was raised to 100°C, and air was introduced to keep the reaction pressure at 0.2MPa. After 6 hours of constant temperature reaction, the oxidation reaction was stopped, and the catalyst was separated by filtration to obtain a mixture of the oxidative degradation product of the copolymer and 150SN. The weight-average molecular weight of the oxidative degradation pro...

Embodiment 2

[0103] Embodiment 2 Preparation of dispersed ethylene-propylene copolymer viscosity index improver DOCP-2

[0104] In a 500 ml pressure reactor with temperature control, water cooling and stirring, add 10 grams of ethylene-propylene copolymer (Mw=182000, ethylene content 58%, purchased from China Petroleum Jilin Petrochemical Company), cut into 0.5cm 3 Then add 90 grams of 150SN (produced by Sinopec Gaoqiao Petroleum Company), add 0.7 mg of tetraphenylporphyrin ferric chloride (M=704.02, 0.001mol) (dissolved in 1.5 grams of acetonitrile), and heat up to 110 ℃, feed air, keep the reaction pressure at 0.3 MPa, keep the temperature for 4 hours, stop the oxidation reaction, filter and separate the catalyst to obtain a mixture of the oxidative degradation product of the copolymer and 150SN, and the weight average molecular weight of the oxidative degradation product is measured as 110600 , the acid value is 0.20mgKOH / g. Add 0.034 g of p-diphenylamine (M=169.22) to the mixture of t...

Embodiment 3

[0105] Embodiment 3 Preparation of dispersed ethylene-propylene copolymer viscosity index improver DOCP-3

[0106] In a 500 ml pressure reactor with temperature control, water cooling and stirring, add 10 grams of ethylene-propylene copolymer (Mw=182000, ethylene content 58%, purchased from China Petroleum Jilin Petrochemical Company), cut into 0.5cm 3 Then add 90 grams of 150SN (produced by Sinopec Gaoqiao Petroleum Company), and add 1.5 mg (0.0013mol) of tetrakis(pentafluorophenyl)phenylferric chloride porphyrin (M=1136.7) (dissolved in 3 g in acetonitrile), heated up to 100°C, and fed air, kept the reaction pressure at 0.4MPa, kept at a constant temperature for 7 hours, stopped the oxidation reaction, filtered out the catalyst, and obtained a mixture of the oxidative degradation product of the copolymer and 150SN, and measured the oxidized The weight average molecular weight of the degradation product is about 123000, and the acid value is 0.15.mgKOH / g. Add 0.022 g of p-hy...

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Abstract

The invention provides a gasoline engine oil composition and a preparation method thereof. The gasoline engine oil composition comprises a viscosity index improver, a clearing agent, a dispersing agent, an antioxidant, an oiliness agent, a pour point depressant and a main amount of lubricating base oil. The structure of the viscosity index improver is shown as a general formula (I) shown in the specification, wherein the definition of each group is shown in the specification. The gasoline engine oil composition has excellent high-temperature detergency, low-temperature dispersibility, oxidation resistance and wear resistance, and can meet the technical requirements of API gasoline engine oil. According to the gasoline engine oil composition, the low-speed preignition phenomenon of gasolineengine oil can be reduced, and super knocking resistance of the gasoline engine oil is improved.

Description

technical field [0001] The invention relates to a lubricating oil composition, in particular to a gasoline engine oil composition. Background technique [0002] The working temperature of the gasoline locomotive engine is low, and it is in the state of running and stopping for a long time in the city, and it is easy to generate a large amount of low-temperature sludge, which will increase the viscosity of the engine oil, block the oil circuit, and the engine cannot work normally. Therefore, gasoline engine oil is required to have better low-temperature sludge dispersibility. In addition, with the continuous upgrading of exhaust emission requirements, the phosphorus content of engine oil is required to be below 0.08%. [0003] CN101982534A has introduced a kind of energy-saving long-life gasoline engine oil, and its composition comprises: synthetic base oil, composite antioxidant, metal detergent, ashless dispersant, nanoscale friction modifier, viscosity index improver, po...

Claims

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Application Information

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IPC IPC(8): C10M169/04C10M133/56C10N30/06C10N30/04C10N30/10C10N40/25
CPCC10M169/045C10M133/56C10M2219/046C10M2219/089C10M2215/086C10M2223/045C10M2215/064C10M2219/066C10M2207/283C10M2219/024C10M2215/28
Inventor 刘依农徐冰苏朔
Owner CHINA PETROLEUM & CHEM CORP
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