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Diesel engine oil composition and preparation method thereof

A technology of oil composition and diesel engine, applied in lubricating composition, petroleum industry, organic chemistry, etc., can solve problems such as not fully meeting the performance requirements of high-grade diesel engine oil

Pending 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

Existing detergents and ashless dispersants cannot fully meet the performance requirements of high-grade diesel engine oils, therefore, the existing technologies need to be further improved

Method used

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  • Diesel engine oil composition and preparation method thereof
  • Diesel engine oil composition and preparation method thereof
  • Diesel 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 produ...

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, and obtain the 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 ...

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 acetonitrile), heated up to 100°C, and fed air, kept the reaction pressure at 0.4MPa, kept the temperature for 7 hours, stopped the oxidation reaction, filtered and separated the catalyst, and obtained the mixture of the oxidized degradation product of the copolymer and 150SN, and measured the oxidized The weight average molecular weight of the degradation product is 123000, and the acid value is 0.15.mgKOH / g. Add 0.022 g of p-hydroxyani...

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Abstract

The invention provides a diesel engine oil composition and a preparation method thereof. The diesel engine oil composition comprises a viscosity index improver, a clearing agent, a dispersing agent, an antioxidant, an anti-wear 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 diesel engine oil composition disclosed by the invention has excellent high-temperature detergency, soot dispersibility, oxidation resistance, wear resistance, metal corrosion inhibition performance and low-temperature performance, can meet the requirements of API CI-4 specifications, and meanwhile, has reduced phosphorus content, and can meet the requirements of environment-friendly emission.

Description

technical field [0001] The invention relates to a lubricating oil composition, in particular to a diesel engine oil composition. Background technique [0002] At present, diesel engines adopt direct injection, delayed injection of fuel, high top ring piston and exhaust gas circulation technology to meet the requirements of high power and low emission, which will result in high working temperature and high soot content of oil products, and the requirements for oil formula higher. For example, in a diesel engine, the maximum working temperature of the piston top bank is above 300°C. This temperature will intensify the oxidation of oil products and produce a large amount of polar substances such as coking precursors, organic acids, and inorganic acids; the existence of soot will also cause blockage. Oil filter, causing cylinder liner, piston ring and valve group wear. Therefore, engine oils have increasingly strict requirements on soot dispersion. For example, when passing th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04C10N30/04C10N30/06C10N30/08C10N30/10C10N30/12C07D207/06
CPCC10M169/048C07D207/06C10M2219/046C10M2219/089C10M2215/086C10M2223/045C10M2215/06C10M2219/066C10M2223/041C10M2223/049C10M2205/022C10M2205/024
Inventor 刘依农徐冰苏朔
Owner CHINA PETROLEUM & CHEM CORP
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