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Internal combustion engine lubricant composition and method for improving detergency of internal combustion engine lubricant

A technology for lubricating oil composition and internal combustion engine, which is applied in the direction of lubricating composition, petroleum industry, etc., can solve the problem that the dispersion performance, the anti-wear performance is deteriorated, the performance of the detergent is not optimal, and the dispersibility, detergency, and oxidation resistance cannot be satisfied. It can solve the problems of resistance, wear resistance, rust resistance, etc., to achieve the effect of low content, less by-products, and improved detergents

Active Publication Date: 2018-05-04
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] Among the compositions reported in the above patents, although they can meet the requirements of various gasoline engine oil specifications, the performance of detergents used in some formulations is not optimal, especially when using traditional Kolbe-Schmidt (Kolbe-Schmidt) ) The calcium alkyl salicylate obtained by the reaction contains 20-35% alkylphenol, which seriously affects the high-temperature detergency of the product, and makes the dispersibility and anti-wear performance of the product worse, and cannot meet the requirements of high-grade gasoline engine oils such as SL. Requirements for low-temperature sludge dispersibility, detergency, oxidation resistance, wear resistance, and rust resistance

Method used

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  • Internal combustion engine lubricant composition and method for improving detergency of internal combustion engine lubricant
  • Internal combustion engine lubricant composition and method for improving detergency of internal combustion engine lubricant
  • Internal combustion engine lubricant composition and method for improving detergency of internal combustion engine lubricant

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] Embodiment 1 catalyst preparation

[0075] Synthesis of IL-1 as catalyst of 1-methyl-3-butylimidazole boron tetrafluoride salt-metaphosphoric acid-sodium dodecylbenzenesulfonate

[0076] Add 1mol N-methylimidazole and 1.05mol 1-bromobutane into a three-necked flask, 2 After purging for 20mim, start stirring and heat to 85°C for 30-36h. After the reaction was completed, it was left to cool down to room temperature, the lower layer of the solution was light yellow, and the upper layer was unreacted raw materials. The upper layer liquid was decanted, 3 times the volume of ethyl acetate was added to the lower layer liquid to wash, and then the ethyl acetate was separated to remove unreacted raw materials. After washing, dry at 70°C for 24 hours to obtain light yellow viscous 1-methyl-3-butylimidazolium bromide.

[0077] The obtained 1-methyl-3-butylimidazolium bromide was dissolved in dichloromethane, and NaBF was added thereto 4 Aqueous solution with a content of 1mol ...

Embodiment 2

[0079] Example 2 Salicylic acid alkylation reaction catalyzed by IL-1

[0080] In a 500mL three-necked flask, add 20 grams of catalyst IL-1, 100 grams of C 16 α-Olefin (Mn=224.4, 0.446 mol), 70.78 g of salicylic acid (Mn=138.12, 0.512 mol), nitrogen gas was introduced, stirring was started, heating was controlled at a temperature between 140°C and 142°C, and the reaction was carried out for 5 hours.

[0081]After the reaction, the temperature of the three-necked flask was lowered. When the temperature of the material dropped below 40° C., the stirring was stopped, and 150 grams of No. 120 solvent gasoline was added. The materials in the three-necked flask were taken out, placed in a separatory funnel to separate layers, and the oil phase in the upper layer was collected, and the ionic liquid in the lower layer could be reused. Add 300 grams of distilled water to wash three times in the oil phase, remove unreacted salicylic acid in the oil phase, and dry the oil phase with anh...

Embodiment 3

[0083] Implementation of the synthesis of 3 polymethacrylates PMA1

[0084] In the three-necked flask, add 40 grams of base oil 150SN (produced by Sinopec Yanshan Petrochemical, with a kinematic viscosity of 5.7mm at 100°C 2 / s), 15 grams of decyl methacrylate, 5 grams of methyl methacrylate, 30 grams of myristyl methacrylate, 10 grams of dodecyl methacrylate, adding 0.08 gram of azobisisobutyronitrile, Introduce nitrogen to protect the reactant, turn on the stirring and raise the temperature to 75°C. At this time, it is observed that the reactant has obvious exotherm, and the reaction temperature is controlled at 90°C. After 2 hours of prepolymerization, the material becomes viscous obviously, and then add 0.05 grams of azo For diisobutyronitrile, the temperature was gradually increased to 105°C for 5 hours of copolymerization reaction, and a light yellow viscous liquid was obtained. Under nitrogen protection, the reacted material was lowered to 25°C to obtain a tetrapolymer...

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Abstract

The invention provides internal combustion engine lubricant composition and a method for improving detergency of an internal combustion engine lubricant. The internal combustion engine lubricant composition is prepared from 1%-5% of an alkylsalicylate detergent, 1%-6% of a high-basic-value sulfonate detergent, 1%-5% of a low-basic-value sulfonate detergent, 1%-6% of an ashless dispersant, 0.1%-2%of an antioxidant, 0.1%-2% of an oiliness agent, 1%-20% of a viscosity index improver and the balance of lubrication base oil. The internal combustion engine lubricant composition has good deterging,dispersing, oxygen-resisting, wear-resisting and rust-resisting properties and contains less phosphorus, formation of low-temperature oily sludge can be reduced, and requirements of API SL for specifications can be met.

Description

technical field [0001] The invention relates to a lubricating oil composition for an internal combustion engine, in particular to a lubricating oil composition for a gasoline engine. Background technique [0002] At present, with the rapid development of my country's automobile industry, my country's car ownership has grown rapidly. At the end of 2015, the number of cars in my country reached 300 million, of which the number of cars powered by gasoline engines accounted for more than 40%. Most of these cars are distributed in major cities across the country, causing a series of problems such as sharp urban traffic congestion and increased exhaust emissions. [0003] Different from diesel locomotives, the operating temperature of gasoline locomotive engines is relatively low, and they are in the state of running and stopping for a long time in the city, which is prone to generate a large amount of low-temperature sludge, which will increase the viscosity of the engine oil, b...

Claims

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Application Information

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IPC IPC(8): C10M169/04C10N30/04C10N30/06C10N30/08C10N30/10C10N30/12C10N40/25C10N10/04
CPCC10M169/044C10M2223/045C10M2219/024C10M2219/044C10M2219/046C10M2215/064C10M2215/086C10M2207/144C10M2205/024C10M2205/022C10M2203/1006C10N2030/04C10N2030/10C10N2030/08C10N2030/42C10N2030/12C10N2030/06C10N2040/25C10N2010/04
Inventor 刘依农段庆华魏克成张耀
Owner CHINA PETROLEUM & CHEM CORP
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